P0299 duramax lmm

P0299 duramax lmm. 6 duramax codes show issues with turbo, such as turbo underboost. rmoore0852. Autozone said EGR Valve, I’m not sure. You should be able to run a stock tune in that truck and not have any Buy Duramax 6. Jump to Latest Follow 1 - 11 of 11 Posts. Captiva fleet p0401 saturn p0191 vue ecm edmunds viva reborn ltz obdiiAudi p0401 fault code Ford code p0299 powerstroke computer p0401 0l sourceP0401 chevy equinox. Full Forum Duramax leaking exhaust through up pipe passenger side also showing why you should do full exhaust delete. [Archive] Page 4 For the 2006 LLY, LBZ & LMM, incl DSP Custom OS. Has 168k miles on it, deleted as well. There is no listing for 2006 Chevy 2500HD Duramax CC SB LBZ EFI Live by PELA Motorsports Air Dog PELA Intake Transferflow 45 gal tank Transgo Jr. 5-05 LLY Duramax Powertrain. I am getting code P0299 and it seems like the turbo is not spinning. thank you 2012 Renault fluence P0299 Engine failure hazard message Engine tuning is the best performance upgrade for a Duramax LMM. Volkswagen Jetta models from 2004 to 2015 often have issues with the turbocharger wastegate, which affects how well the turbocharger works. 19, 2013 – Internal firmware Here’s a way I found and fixed Boost Leaks on my LBZ Duramax. 5 LMM Duramax in her (duh) Use the 1500 frame Use the 2500 Rear end out of the donor truck Maintain all factory options (including auto track and tap shift) The plan: My plan currently is to drop the dmax in the 1500 frame, and use the front diff out of the suburban. Joined Aug 13, 2007 · 220 Posts #22 · Mar 17, 2011. I opened and cleaned the intake sensors and EGR solonoid and passes. 5 LMM EC LB EFI Live ATP 3" downpipe, DPF delete, PCV bypass, FASS flow enhancer, Donaldson wsf, Cimtek 1 micron, PACBrake air bags, Tekonsha P2, Husky 5th receiver. 2010 GMC CC LB 2500HD LMM WT 4X4-White: - '08 H2 wheels 295/70ar17 I have the EXACT same issue as OP. Last edited: Jul 16, 2022. Took it back in, they did a "turbo regeneration" to try to clean the turbo, and they thought that fixed it. Come join the Recurring P0299 when cold. P0101 gmc duramax Chevy / GMC Duramax 2017+ L5P Forums. Ford F-150 trucks from 2011 to Duramaxdiesels. I'm thinking it's the cat that's plugged because it's before the dpf and I was never getting dpf codes. 07. P0299. running a tow tune right now have run it for about 10k no problems just appeared. P0101 is hardly ever a maf code. P0087 low fuel rail pressure; duramax hard start/no start; fuel filterLmm p0087 code 2007 chevy duramax 6. LMM: 12628594 Stock LMM 09' CCSB Chevy. Bought it last December(2021) with 67,000 miles and a 4 year extended bumper to bumper warranty. Other than that the truck is all stock. Only show this user. Come join the DTC P0299 runs continuously when the above conditions are met. A simple tuner can add up to 100whp for just a few hundred bucks. OBD2-Code P0299: Ursachen, Anzeichen und wie man ihn behebt Tutorials DTC P0299 runs continuously when the above conditions are met. R. I did get codes, p0299 (underboost) and a p244B (DPF pressure). LBZrcks. This kit will NOT fit the Cab & Chassis trucks. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. The following is the change history log for XRT Pro Tuners that was previously hosted by H&S Performance before they closed down. I live in San Antonio Tx where its pretty hot. At Trucksauthority. I cleaned my maf already and didn't correct the issue. As is common with emissions equipment, this led to a new common problem for the Duramax LMM engine. This drop-in upgrade is famous for its 6. Full Forum Listing. 5-10 LMM Duramax Powertrain 08 silverado 3500 throwing a p0299 dtc Discussion Starter · Jul 21, 2009. I thought maybe it was a boost leak. P02e7 and p02e8 codes are on and i cant figure out what the hell is the problem truck is running good i was able to delete the codes Searched for an answer just didnt find anything. Jump to Latest 26K views 29 P0526 code: cooling fan speed sensor circuit P0046 code turbo boost control solenoid duramax lly lbz lmm gmc sierra What causes p0087 duramax code [+ easy solutions] How to fix the p0678 dtc. Different Duramax models have unique features. Hey guys so I have a 2008 3500 6. The perfect platform for those who do heavy hauling regularly. Fully balanced and blueprinted. I have never had a problem with the turbo. For instance, the LBZ, LMM, and L5P engines all exhibit different behaviors when it comes to experiencing the P0087 code. A simple plug-and-play tuner, or custom tuning, can easily add over 100+ horsepower and 200+ torque. I'm not convinced it is a turbo issue. I have a pair of trucks local to me with 4094/72mm chargers on LMM's. By Madspeed in forum Duramax LLY Replies: 2 Last Post: March 25th, 2007, 02:32 AM. 2011 Gmc Some 2020-2021 Silverado and Sierra models equipped with the 3. Truck sat for the last week started it today and threw code P0299. On the GM Duramax diesel, this code may mean the turbo housing resonator has failed. 5 - 2010 LLY LBZ LMM, 2010-2011 LGH, 2011 - 2016 LML. We will be doing a bunch of videos coming soon for commonly found '08 Chevrolet CC/LB LMM Work Truck 4x4 Deleted, DPF-R, Reading Utility Bed, Leveled on 285's, Rhino Lined www. | Chevy and GMC Duramax. pdf P0299. Going to check the MAF does anyone know if it is digital or analog? I can here the turbo 2008-2010 GMC Sierra & Chevy Silverado HD 6. MJZZZ Discussion starter 274 posts · Joined 2005 Add to quote; Only show this user #1 · Dec 7, 2017. This not only leads to a severe loss of power, but it can also cause loud mechanical noise. 5-10 LMM Performance Parts Discussion Cold Air Intake Solve Issues? Seems it will throw a fit out of the blue then start getting P0101 & P0106 and occasionally 2008-2010 GMC Sierra & Chevy Silverado HD 6. How I fixed P0101 P1101 P0299 codes on my 2016 Chevy Cruze - YouTube. the truck has been running fine for the pass 4 years, until today. 2016 GMC Duramax Denali bone stock. The LMM has more stringent emission For the duramax owners getting a p003A code for turbo vane issues this is why. While it retained much of the raw power characteristic of its predecessor, the LMM stands apart as the first Duramax engine designed to comply with increasingly stringent emission standards. This is an older thread, you may not receive a Duramax LBZ 360HP Allisson 6 speed 4x4 4Runner 4Cyl 1988 SAS 6" body lift 2" 5,29 gear Detroit in rear Welded Front axles 38" Tsl! Save Share Reply Quote Like. Proudly Made In Canada! The Dirty Diesel Customs 73101 EGR Delete Kit Has Everything You Need To Delete The EGR Cooler. If you have a Ford, you'll want to next check the wastegate regulating valve solenoid for correct operation. EFILive Forum > Tuning > Diesel > Duramax 06 P0299 underboost on LMMs KILLING ME; LMM main fuel flow at idle 28mm3? file not supported ; Clean Stock Tune Needed; lmm tune wont load to autocal; Converting an LMM tune to LBZ tune; turbo whistle; Looking For A Little Help; need help GM launched the LMM in 2007. I have a LMM Duramax 4" pipe EGR delete, Injection pump 50 + HP, Electric fuel pump aftermarket air filter , EFI Live tunes and so on . Trouble began when over oiled K&N released oil into intake resulting in P0299 turbo under bo read more 6. The ECM commands reduced engine power. Come join the discussion about modifications, towing, DTC P0299 runs continuously when the above conditions are met. Can I remove just the cat and leave the dpf ? I don't want to spend the money on a tuner I will need to The P0299 code often shows up in certain car models, especially those with turbocharged engines, so it’s important to know which vehicles are more likely to have this problem. 0 capable, Install download text change. 6L Duramax Diesel LB7 LLY LBZ LMM. above or below that she tends to run like a Haint. Save Share 2007. Oct 11, 2009 752 135 43 Berryton, KS. I checked OBD. While it reduced Duramax Hard Parts. I tested every pipe and intercooler separately up to the Differences Among Duramax Models. 5-10 LMM Forums. Upon further investigation, the technician may find the I stopped, shut it down, restarted it after a few minutes and a flame shot out of the exhaust. All 2009 LMM's already have an extended rail pressure bleed down calibration. LMM starts then dies after 5-10 seconds. Come join the The 6. To strengthen emissions active regeneration was added alongside a DPF system. it makes since to be a boost leak with the excessive black smoke and MAF code and the ocassional p0299 turbo under boost but why is the p0405 the main code? turbo/intercooler boots seem to be right and im not around enough vvt or any dmax for Hello all, I always followed the forums but I haven't yet found my solution so I finally gave in and joined. Jul 30, 2009. 5 LMM: we put a new turbo, egr valve, cooler and PPE down pipes. . Your truck is keeping boost by your desired tables. Got all of it installed and found that only on a long hill when 2009 Chevy 3500 Dually: Induction System Leak & P0299 Duramax Limp Mode Q&A. S. A simple tuner can add Just purchased a 2018 chevrolet duramax only 40k miles. 107. 06-07 LBZ & LLY Duramax Powertrain. Engine tuning is the best performance upgrade for a Duramax LMM. Based on what I read on here I figured a leak or a bad turbo. Come join the discussion about modifications Customer: Hi, I recently had a P0299 code come on in my 2006 chevy duramax pickup which is all stock and 108,000mi. 19 Sept. What causes this and how do you fix it. I do have an AFE CAI on this truck but that's been there for over 150,000mi at this point and is a dry element filter. LMM bad vibration. Towing in FL heat. 17, 2011 – P0299 My opinion is not the opinion of Duramax Forum, Vertical Scope, or other Duramax Forum staff members! Non Vendor contact information, URLs and/or links are NOT allowed in signatures OR on forum! 23 GMC Yukon 3. Duramax leaking exhaust through up pipe passenger side also showing why you should do Subject: Duramax Diesel Airflow Leak Equivalency Ratio Or Induction System Leak Indication And P0101 Models: 2007-2015 Chevrolet Express, Kodiak, Silverado 2007-2015 GMC Savana, Sierra, Topkick Equipped with the 6. LMM code P0299. Explore Our Forums . It was very similar to the LBZ, but it featured an all-new emissions device, a diesel particulate filter. 5-05 LLY Duramax Powertrain Egr & cooler pipe cleaning My 2005 LLY, 230K miles threw out codes P1404, P0299, P0101, I removed the EGR and Cooler pipe for cleaning (stuff with carbon), but I can not find any information for cleaning the cooler pipe, inner tubes are not straight, it looks like they are split LET'S GET THIS CHANNEL TO 17,000 SUBSCRIBERS!!!NEED L5P Parts? MESSAGE ME ON INSTAGRAM @Denny_Diesel OR EMAIL dennydiesel@yahoo. 5-10 LMM Duramax Powertrain P0299 code. H. L We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. So, if you get a scan and it comes back with a trouble code, it pays to know what’s going on under the hood. i took it to my friend at a GMC dealer and ran the code. 5-10 LMM Performance Parts Discussion P0087 duramax lbzAll causes and solutions of code p0087 duramax: in 2023 Lmm p0087 duramaxforum brake duramaxP0087 code. Condition/Concern: Some customers may comment on an illumination of the check engine light. END CAP KIT - Test to 30 PSI - PREMIUM fix P0299 (#133072504240) b***i (155) - Feedback left by buyer. I get black smoke out of the tail pipe of varying degrees related to the pedal push and if I hold it long enough the P0299 comes up. LMM: Jump to Latest 2K views DTC from P0000 to P0299 (air/fuel mixture control) - this is a generic reference. Fixing the P0299 is not an easy task, even for a mechanic. with EFI live. hShutt Discussion starter 6 posts · Joined 2021 Add to quote; Only show this user #1 · Aug 27, 2022. The one I DTC P0299 runs continuously when the above conditions are met. 5-2010 Duramax LMM; Short Block; Workhorse Diesel; Upgrades From Daily Driver include but are not limited to: Stage 2 Cam Shaft P0299 Turbo Underboost! LBZ: Jump to Latest Duramax Allison 4x4 265 Michelns Turning wrenches 5 days a week:thumb: Reactions: IGO1320. 2009 GMC Sierra 2500HD SLE CC/SB 4x4 LMM EFI Live, Edge Insight CTS, Flo~Pro 4" DP back exhaust w/ muffler & stock trumpet tip, Alum. 5, replacing the LBZ due to tighter emissions regulations. They cleaned out a corroded sensor and that didn't fix it. The LBZ is known for its durability and fewer emission controls, which can make diagnosing easier. The mil lemp is on ,need help. com, we cover everything from Trucks, SUVs, Cars, Campers, Motorhomes, RVs and Trucking Companies. I've narrowed down my p0299 code to a restricted exhaust. Jul 16, 2022 We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. #po191 #p0191 #odbcodes P0087 low fuel rail pressure; Lml catastrophic pump failure common problems P0087 code duramax P0526 code: q&a on p0526, p0495, p1345 & moreP0701 help Interesting p0299 code experienceP0526 code: cooling fan speed sensor circuit. 5-05 LLY Duramax Powertrain Egr & cooler pipe cleaning My 2005 LLY, 230K miles threw out codes P1404, P0299, P0101, I removed the EGR and Cooler pipe for cleaning (stuff with carbon), but I can not find any information for cleaning the cooler pipe, inner tubes are not straight, it looks like they P0299 - Turbo Under Boost 2005 GMC Sierra CC SLT 2500HD 4X4 Duramax, Carbon Metallic, Line-X Bed Liner, Cognito Leveling Kit, Weld EVO Velocity 8's 16x8, Bridgestone REVO's 285/75/16, GM Touchscreen NAV w/ In Dash 6-Disk CD Changer, Banks Six-Gun Bundle. After a week of owning it, it through a code p0191 for fuel rail pressure low. I have a 2007. 04. How to unstick a vgt turbo on a egr deleted lmm duramax Erfahre die genaue Bedeutung des Diagnosecodes p0299, seine möglichen Ursachen und Tipps zur Beseitigung – alles kostenlos. Got a 09 LMM here, bought from previous owner a little over a year ago. P2563 and P003A are common engine codes amongst 2004. 26 . Make sure the sensor is plugged back in. Conditions for Setting the DTC The measured MAP pressure is more than 39 kPa below the expected range for 10 seconds. Hi, my name is Robert and I am a truck driver. I also got a P0101 "MAF Issue" code and later a P0299 "Turbo Low Output". At like quarter throttle the boost goes to around 40 lbs and I stop and I have a scanner on the truck, as I run the scanner the code P0299 came on. 7 diesel P0299 P0471 P0401 I have 2014 6. Guys some of the 08 duramax engines throw a p0299 code and go into reduced power mode after a tune P0299 only under Heavy load. 0 SLE 4X4 -White:- yellow Bilstein's, 285/70R17 Toyo AT2s, 50 Flowmaster, tr-sleeves, Blackbear 87 tuned Sold- 2009 GMC CC SB 2500HD LMM Z71 4X4-Silverbirch: Stock tuned Customer: I'm working on a 2007 gmc 5500 with the LMM 6. Additionally, you get a number of other benefits like increased gas mileage, better towing, transmission tuning capabilities, and a more efficient engine overall. Jump to Latest 2K views 0 I pulled the codes this morning at work and I'm getting P0101 and P0299. Can You Drive Your Duramax With code P0191? It is not advisable to drive your Duramax if it is experiencing a DTC P0191. Lmm lbz lb7 lly LmL lly code p0299 help. DTC P0299 Diagnostic Instructions. MBRP down pipe and dpf back exhaust. I had them clear the code and didn't make it out of the parking lot before the light came back on. Took it back 2 days later. 24 Dec. I called Duramax Diesel here in town that rebuilt the motor and then followed up by calling The Diesel mechanic shop the If clear the code the truck run a little better until you step on the gas and the black smoke comes again and the truck goes again on limp mode. 210. It gives the p0299 code. LMM,LBZ,LLY,sold LB7:driver: efi live,, mike L SC3 tranny brace keywords 6. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. 5 LLY. Also, the truck ran hot, Chevy / GMC Duramax 06-07 LBZ & LLY Forums. The under-boost code did not come back, but the MAF code did. P003A ad P2563 Possible Fix. That didn't fix it. bayoubengal · Registered. The code came on during a very cold day. Both are Danville chargers, both had/have intermittent P0299 conditions when lugging in 5th and mostly 6th gear or under slow acceleration on the highway or pulling grades with the TC locked in taller gears. It can also eventually ruin the engine, making this problem even more severe than when it started. Chevy and GMC Duramax Diesel Forum. Yesterday I hoped in the truck DTC P0299 runs continuously when the above conditions are met. Pulled out my scanner and scanned it, all I could find was turbocharger under boost code. Save Duties & Brokerage; Shop Canadian! P0676 duramax: underlying causes and what you can do to solve itHow to fix the p0735 code on duramax (step-by-step guide) 2005 duramax oil pressure sending unit location best saleP0046 code turbo boost control solenoid duramax lly lbz lmm gmc sierra. 5-2010 (LMM) LMM p1239 injector short circuit. Chevy / GMC Duramax 06-07 LBZ & LLY Forums. :thinkkkk. 5-10 LMM Duramax Powertrain p0101 p0299 p0405 and p0113 MAF comes back on. I pressure tested the system and it wouldn't even hold air, but I couldn't hear any leaks. Come join the discussion about modifications, towing, classifieds, lmm p0299 reduced power fix proposed please help hp tuners. 0L - Old Trucks: 1 - LB7, 3 - LLY, 1 - LBZ, 2 05 6. Got the same problem also with p0299 . The repair steps for a P0299 code may vary depending on the specific make and model of the vehicle. Took it to dealer they changed out fuel pressure sensor and wiring kit. 3 with codes p0101,p0126,p0171,p0174 and p2135. called hypertech and they said to put it back to stock and run it untill it does it again. Aug 5, 2009. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. RedBowTies88. 7 diesel dodge ram and getting codes P0299 P0471 P0401 all the time . 5 LLY P0299 P2563 P0101 They all cleared, except P2565. It has a brand new mass air flow sensor on it too. 2009 GMC Sierra 2500HD SLE CC/SB 4x4 LMM Just purchased a 2018 chevrolet duramax only 40k miles. Jump to Latest 9K views 2 Someone correct me but your target tables do not need to match. I am running the same tune on my 2wd LBZ with How To Fix the P0299 Code: DIY Techniques. More problems. TheBac. And checked the air cleaner. Engineered with Choose Options 2009 lmm p0101 code P0101 code solutions? P0101 solutions rpm grams maf. 310 posts · Joined 2012 Add to quote; Only show this Vehicle: 2010 gmc savana 3500 cutaway duramax 6. 26 June 19, 2012 – Medium duty truck surging addressed Introduced in 2007 and manufactured through 2010, the LMM Duramax emerged as a worthy successor to the much-loved LBZ. 11-16 LML Duramax Powertrain Code p0098. I was looking at the scan tool and the map sensor does not match desired boost. Could it be a sensor or computer, etc? If turbo was bad why would a code reset cause it to Or, where can I purchase a complete Duramax Maintenance/Repair Manual with wiring information I am an Electronics Repair/Calibration Technician in the Navy so I have the capability to fabricate any thing I need to fix electrical/electronic problems, just need the tools (schematic) Thanks in advance for any advice 2006 Chevy Silverado 2500HD Crew Cab, Customer: I'm working on a 2007 gmc 5500 topkick with the LMM 6. 2009 GMC Sierra 2500HD SLE CC/SB 4x4 LMM Just had P0299 come up as well. Jump to Latest 2008 Chevy 2500HD cc/sb. I cleaned out the MAF sensor, installed a new MAP sensor, new fuel filter, and unplugged the batteries for about a hour. Check it out for your 2006-2010 LBZ/ LMM w/ 6. santosjerry1 Discussion starter 4 posts · Joined 2022 Add to quote; Only show this user #1 · Apr 5, 2022. Code P0113 and going into limp mode. It seems like the only time it will code is if I am Chevy / GMC Duramax 04. I have a straight piped lbz. 5 Chevy 2500 4x4 6. When your Duramax begins throwing a P2563 code, a scan tool will read ‘Turbocharger Vane Control Position Sensor Performance‘. 4k to 5. 2014 Dodge Ram 6. I can't hear any boost leaks and I couldn't find anything loose, but I am still leaning towards a boost leak because the body shop replaced my intercooler, among many other things. Jump to Latest Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . 8K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel Chevy / GMC Duramax 06-07 LBZ & LLY Forums. Lmm lbz lb7 lly LmL. 6L Duramax Diesel Engine RPO code LGH, LML So I've gotten all of these codes lately (P101 , P102, P0299 , P0101pd , P0102pd) so I cleaned my MAF and air filter (air filter was pretty darn dirty) erased the codes and they came back within another 15 miles. 5-05 LLY Duramax Powertrain Urgent Very Slow on take offs. Save Share Reply Quote Like. 2010 Duramax Fourth Generation: 2007. Jump to Latest 16K views 11 P0101 & P0299. When the turbo fails, a part of the turbine can be sucked into the engine. Duramaxdiesels. It seems to do it most on really hot days. Found 4 result (s) for your search. Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab, A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. 6L air black box calibrate calibration flash idle intake LLY MAF PCM program programming P0299 smoke start startup #PIP3855 - (07/11/2006) 2008 2500HD 4wd z71 Crew cab lmm. 0 Reply. tony1224; Dec 23, 2022; Replies 6 Views 668. First time. 5 to 2016 Duramax turbo engines which us Alright guys, I've had this engine code for awhile, and never thought it was anything, CTS says the pressure was fine until recently. Diagnostic AidsA MAP sensor that is stuck at BARO, or is 40 kPa lower than desired while under boost, Duramax leaking exhaust through up pipe passenger side also showing why you should do full exhaust delete. This started happening after I put my 5in straight pipe 2008 Silverado Lmm 5in Exhaust EGR Delete, EFI LIVE 190K miles 1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that, DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit. My hope is to save Got home and checked for codes and got the P0299 (turbo boost issue). 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air If a 2007i-2008 LMM vehicle had field action V1819 - 08142 ECM EEPROM - REPROGRAM ECM applied, then reprogramming the ECM will not repair this condition. Finally got around to taking it to a local diesel shop for a check up and he said my P0299 and P003A code are because of the turbo vane solenoid (NOT THE POSITION SENSOR. The vehicle can be driven till the fuel injectors work properly. 6l turbo diesel current P0046 code turbo boost control solenoid duramax lly lbz lmm gmc sierra Interesting p0299 code experience P0087 low fue DTC P0299 runs continuously when the above conditions are met. Jump to Latest 16K Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab, 2WD,LB. 2008 Z71 CC/SB 2500HD LMM EFI Live tuned by Central Florida Duramax/MMLMM :neener 6" Roughcountry lift, Cognito UCA's, Tie-Rods, Idler and Pitman support, EGR Blocker, How to fix the P0046 code TURBO BOOST CONTROL SOLENOID DURAMAX LLY LBZ LMM GMC Sierra Chevy SilveradoLink to Turbo Boost Control Solenoid in the video:https: P0299 Code Engine Underboost! That's what I figured but wanted to get everybody's take on it. Past 6 months. We have a very persistent P0299 code, it's the only code. Action Taken When the DTC Sets DTC P0299 is a Type A DTC. Action Taken When the DTC Sets. My 2009 chevy 3500 with a Could have damaged the wire by mistake when I installed an S&B turbo mouthpiece or "lost" the egr system. 5 Chevy HD2500 Z71 LT2 LMM Duramax B&W Turnover Ball Gooseneck Hitch Weathertech Floormats Dashmat Ultimat T-Bars Cranked Just To Level 1st Diesel ~ Bone Stock. 5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) 07. 6L Premium Turbo Boost Leak Tester Pressure Test to 60 PSI - Billet End Cap w/60 PSI Boost Gauge, Fix P0299 Code Restore Torque! (with 150 PSI Topkick, Kodiak, 2001 - 2004 LB7, 2004. T. The ring that rotates back and forth opening and closing the vains seizes on the housing from soot build up. Come join the discussion about modifications, towing, 2009 Duramax continues to reduce engine power and throw P0101 code after 2 new dealer replaced MAF sensors. 18 Aug. 5 LMM ccsb, 7" bds lift with 355/60/20 terra grapplers, Built Trans by Mike at Inglewwod transmission in Fullerton, 5k lb bags, Pullrite Super 5th 20k hitch, PPE xcellerator economy programmer on stage 2 per suggested by PPE techs to prevent the clogged dpf issue I'm having now. If you would rather consume this content via a video, check out our How to Build a 450 WHP Duramax LMM video below: 1) Engine & Transmission Tuning. 5 Sierra LMM, S&B intake, Leveled, Resonator Delete, Edge Insight CS, I know nothing about duramax engines. 6 with the LLY motor and Allison Transmission. Got mine Now that you’ve troubleshooted your P0299 code, you know what the code P0299 means. Current Version: 6. Within the first few months of getting the truck I pulled my boat up a grade making a pass by a few trucks and it threw the P2263 and P0299 codes with the reduce engine power. 12084 posts · My 2013 2500HD CC, LML was towing 13,000 lb 5th wheel up Towne Pass in Death Valley (10-mile grade @ 7-10% approx) air temp in the '50s, RPM 2500 all gauges normal then 3/4 the way up threw a P2263 code, "turbocharger system performance". I put about 5000 miles on it and no code, but it isn't right I have a 08 lmm with the banks econo mind tuner and speed brake, Just had a new Garrett Powermax stage 1 installed . Interesting p0299 code experience The ARP 230-4201 Head Stud Kit is a high-quality and reliable solution for enhancing the performance and durability of your 2001-2016 GM 6. 6 L duramax. 8K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. The kit that I bought you advertised it with two boots and three clamps. Since then, I can reliably set a P0299 at what I would call cruising rpm's (1400-1800'ish rpm's and the need to accelerate). I drove it down the road today and it bogged down from 45 and when I stopped the truck turned off. thank you 2012 Renault fluence P0299 Engine failure hazard message Chevy / GMC Duramax 11-16 LML Forums. Chevy/GMC Duramax 06-07 LBZ - P0101 and P0299 trouble codes need help - 07 GMC LBZ 140k miles bone stock- no choice I am in Cali. L. Dec 23, 2022. 12722 posts · Joined 2009 Add to quote; Only show this user #23 · Jan 11, 2010. Application Spec Notes; A/C Compressor Bolt: 37 lb ft: Air Conditioning Compressor/Power Steering Pump Bracket Bolt: 34 lb ft: Axle shaft nut: 177 lb ft: Brake hose bracket bolt: 80 lb in: Brake hose clip bolts: 106 lb in: Bump stop nut: '08 Chevrolet CC/LB LMM Work Truck 4x4 Deleted, DPF-R, Reading Utility Bed, Leveled on 285's, P0299 Turbo Charger Underboost P0401 Exhaust Gas Recirculation (EGR) A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. 2004 2500hd lly duramax 319100 miles. 6L 207. Also works with all aftermarket 3” hot pipes using the stock turbo ; Test Mechanics Tips about the P0299 Code. Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a Engine tuning is the best performance upgrade for a Duramax LMM. Jump to Latest MBRP Downpipe, 4” MBRP Frontpipe, OEM Catback Exhaust, PPE uppipes, HSP intercooler pipes, Hayden 2886 Fan Clutch, LMM Resonator Box, Airdog LP, PCV reroute, S&B intake w/ LBZ Scoop A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. 2015 CCSB DENALI P0101 is not a maf code, but instead it is a mass air fliw outside of the desired range code. com. Jump to Latest 34K Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab, 2WD,LB. 19 6. JoshH; Jul 30, 2009; Replies 0 Views 2K. P0101-MAF senser code P0299- turbo underboost I am getting both not sure what to look for first. 5-10 LMM Duramax Powertrain CEL codes help! Jump to Latest P0299 P0300 P0301 P0302 P0303 P0304 P0305 P0306 P0307 P0308 P0335 P0336 P0340 P0341 P0381 P0401 P0402 P0403 P0405 P0406 P0420 Location of barometric pressure sensor Duramax. 5-10 LMM Duramax Powertrain. took it for another drive and gave it hell with some major acceleration with no problems?? I installed efi Conditions for Clearing the MIL/DTCDTC P0299 is a Type A DTC. P0299 attached . 2006 GMC duramax diesel 4x4 sbcc, Customer brought it in with no boost, Stock turbo had excessive play in the impeller, Replaced it with a stock remanufactured turbo fro BD diesel performance (garret certified dealer), after test driving it threw a P003a (boost control position not learned) and a P0299 (engine under boost) It felt like it was making good boost LMM Duramax Crank, No start. Code P0101 & P0299. 6L Duramax Diesel Engine RPO codes LLY , LBZ , LMM (VIN's 2 , D , 6 and 9) The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. I put about 5000 miles on it and no code Chevy / GMC Duramax 04. 0k at idle. 754 posts · Joined 2010 07. Jump to Latest 15K views 5 replies 2 participants last post by coooljmp Aug 23, 2016. From all out performance builds running 8 second ¼ mile 2007. 2017-19 GM T-K2 Platform Powertrain Codes P0046 & P2599. You can do basic diagnostics, like checking the OBBD-II codes and visually inspecting the BPS and MAP sensors. 6. Turbo My p0299 code did not come back on yesterday, but I can't say that it fixed that problem yet, because it only came on within the first 10 seconds of running a cold engine, and not every time. Posting Permissions You may Chevy / GMC Duramax 07. 26, 2014 – ECM RPM limited to 3200 for emissions removed tunes. 0L turbocharged Duramax diesel engine (RPO LM2) may exhibit a lack of performance along with DTCs P003A (Turbocharger Boost Control Position Exceeded Learning Limit), P0046 (Turbocharger Boost Control Position Performance), P0299 (Engine Underboost) and/or Customer: I'm working on a 2007 gmc 5500 with the LMM 6. I pulled and cleared the code, but am still getting a pending code with a flashing egr light on my scanner. Jump to Latest 10K views 4 replies 2 participants last post by Ron Nielson Apr 7, 2022. P0046 code turbo boost control solenoid duramax lly lbz lmm gmc sierraHow to fix the p0540 code on duramax Duramax Fifth Generation: 2011-2016 (LML) Questions about P0299 code. 1 This is not an LMM locfation but yours will be pretty close to this. I wish I knew what it was, but I don't seem to have any ill side effects Update: I replaced the MAF sensor last night and so far I haven't seen P0101, P0102, or P0113 again. Ask an Expert. 23 Oct. Chevy / GMC Duramax 04. Turbo Boost Leak Tester 3" O. 1163 posts · Joined 2012 Add to quote; Only show this user #2 · Jun 18, 2014. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! Show Less . Full Forum Listing I’ve got a 2005 LLY Duramax, has an aftermarket air intake, had the muffler removed but kept the cat. Truck was fine until we just had a heat wave and when I went to start it, glow plug light stayed on longer than Best Duramax LMM Performance Mods. EGR delete, EFI live with switch (DTS), down pipe, 4 inch flow pro with muffler, Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . you can. One Here at Paul's Performance, we show you today, this 3-part video series where you see Paul diagnosing a P0299 Turbo Under-boost Code in a 6. Dec 17, 2022. 2001-2010 Chevrolet Silverado & GMC Sierra 6. 0 whistle and enhanced top-end performance. Please note that it is not compatible with LMM and LML Duramax style turbos that have been updated to the latest Garrett design. Ron Nielson Active member. GM/Chevy Sierra/Silverado 6. B. MAP Sensor - Reduced Power - Is this Normal? Jump to Latest 14K views truck ran good all weekend but this morning after about 20 minutes of driving I get the ever popular P0299 code for low boost and engine power was reduced. Chevy / GMC Duramax 07. Designed with the working man in mind. 06-07 LBZ & LLY Duramax Powertrain p0299 on the way home the check engine light came on. 6L Duramax LMM (’07½ to ’10) and LML (’11 to ’16) are very finicky when it comes to changing turbos, even a mild change like the Stage 1 Garrett units. The information listed is for tune file versions used by the 6. 'liLLY' 05 duramax 2500 CCSB 4X4- 334,995 Limitless Diesel Built trans with Suncoast 1054 converter:thumb:, They were all there but so was the P0299 under boost. Took it back again and they The P0299 diagnostic trouble code (DTC) shows up when your car's engine isn't getting enough boost from the turbocharger or supercharger. But if I reset codes the turbo runs fine. Jump to Latest a loud hissing sound from under the hood more so on the driver side. 7 MPG today, crazy mileage for a crew cab dually 2011 Silverado LTZ 4WD Big Dooley, CC, LB, Duramax, B&W gooseneck Truxedo Lo Pro. 14, 2011 – Reduced engine power messages addressed. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! 2007. P0191, reduced power Master race, 2019 3500. 6L Duramax LB7/LLY/LBZ/LMM/LML engine. There is no snow in teh air filter, no snow here for a few days. LMM Reduced Power Mode. 6 diesel -- p0087 code, We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. The kit you sent me is The information listed is for tune file versions used by the 6. If caught and cleaned early enough will save both the turbo and the rest of the engine from futher damage. Trouble began when over oiled K&N released oil into intake resulting in P0299 turbo under bo read more 2008 duramax lmm p02e7 p02e8. Equipped with the 6. P0101 and P0299. 5 LMM CCSB 4x4, PCV reroute, B&W turnover ball, resonator plug, egr blocked, edge insight cts, dsp5 efi live by Idaho rob, 4" mbrp straight pipe. P0174 chevy p0171 codes p0101 o3 disconnect 1500 paul chev Chevy cruze p1101 p0299 p0101 codes O3 chevy 1500 5. Verified purchase . 8M posts 216. C4500 Stock and Tow tune. 5-05 LLY Forum. Replies 23 Views 8K. 2010 GMC CC LB 2500HD LMM WT 4X4-White: - '08 H2 wheels 295/70ar17 Cooper ST Maxx's, cognito braces, SD tr-sleeves,Yellow Bilsteins,LML manifold 2010 GMC EC SB 2500HD 6. 5-10 LMM Performance Parts Discussion Cold Air Intake Solve Seems it will throw a fit out of the blue then start getting P0101 & P0106 and occasionally P0299. Drove I have a 2002 2500hd duramax with getting close to 269k miles on an original engine and transmission. GM launched the LMM in 2007. a 2005 model 2500Hd, P0299-Turbocharger Engine Underboost 2007 GMC Sierra 3500HD 4x4 CCLB DRW LMM DRW Club Member 193 Mods: N For Duramax diesel DTCs such as P0420, P24A0 (Closed Loop DPF Regeneration Control at Limit - Temperature Too Low), or P2463 (Diesel Particulate Filter Soot Level Accumulation), the indirect fuel injector should be diagnosed for proper function as described in the appropriate Service Information. From all out performance builds running 8 second ¼ mile territory, to 2000hp sled pullers and all the way back to the average guy looking to boost his performance in his tow rig to get up those hills a little quicker than his buddies. I did unplug and plug the wire back in where it connect to 07. DTC P0299 is a Type A DTC. For all Cab & Chassis trucks, please reach out to our team at 888-830 For Duramax diesel DTCs such as P0420, P24A0 (Closed Loop DPF Regeneration Control at Limit - Temperature Too Low), or P2463 (Diesel Particulate Filter Soot Level Accumulation), the indirect fuel injector should be diagnosed for proper function as described in the appropriate Service Information. Sort by Oldest first Oldest first Newest first Most reactions. This means the boost pressure going into the engine is lower than what the engine control unit (ECU) requires. 0 shocks; Amsoil dual remote filters; 20x10 4Play Wheels; Toyo 295 60 R20 ATIII; Retrax XR bed cover; Amp 09 Duramax "Engine Power Reduced" Jump to Latest 1K views 3 replies 3 participants last post by Burk Oct 1, 2022. Jun 2, 2023. it came back P0299 turbocharger 2008 GMC Sierra 2500HD LMM. Pulled code from my Insight Monitor. bleeder screw, WIF sensor delete plug, Fumoto oil drain valve, Pacer LED cab lights, GM dually light bar under tailgate, Footwell lights, Cobra 29 WXNWST CB radio, Wilson 2000 CB antenna, Kenwood speakers, I have code p0299 which is low boost I believe and throws the pickup in Fleece Tapshifter, Edge CTS2, Mishimoto Trans Cooler, DT 6-Spd Conversion, 2015+ Tow Mirrors, LMM Rear Bumper, LML Booster, PSC PSP, EFI Live Tuned by a A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. For Duramax diesel DTCs such as P0420, P24A0 (Closed Loop DPF Regeneration Control at Limit - Temperature Too Low), or P2463 (Diesel Particulate Filter Soot Level Accumulation), the indirect fuel injector should be diagnosed for proper function as described in the appropriate Service Information. If clear the code the truck run a little better until you step on the gas and the black P0299 dtc solved. 2023 LZO CC std box 4x4 previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04. Attachments. I know it is a turbo underboost code. comFollow Me On INSTAGRAM! @D Got the B update to address the P0299 code yesterday, 23. Anything more complex should be Chevy and GMC Duramax Diesel Forum. Truck is bone stock other than 6" lift and 35" tires and only 68k miles. 6L Duramax with Dirty Diesel Customs. my 08 duramax keeps throwing a p0299 dtc when programed with the hypertech E-con. Experience quicker boost and faster spool with KC Turbos' 10-blade turbine wheel. Learned why the hard way. 97chevor. Check Details. Car Questions. 5-2010. 8 KB Views: 49. Truck runs great but every time I put my trailer on with a load. 6L LMM Duramax 2500, 3500. Ron Nielson. Duramax leaking exhaust through up pipe passenger side also showing why you should do Today I went to start my truck. Fellas and fellettesStarting a new thread because the correct answer to this problem is burried pretty deep in the other P0299 thread. today it went into reduced power mode and the P0299 code came up. I have replaced the vane position sensor, checked the intercooler o-rings, all the piping and couplers and no leaks during a boost leak check. Cleared code, then went and drove it and still throwing the same code. 6 4x4 with 212k miles, dpf delete is the only mod. PattyWgnOwen; Aug 6, 2014; 2. Duramax LMM, 6" Fabtech lift sittin' on 35's, Bilstein Reservoirs, custom paint, aftermarket nav, Edge Insight CTS, Airdog II 165,5" Straight piped, profab egr Chevy / GMC Duramax 04. However, I still have P0299. A message center or an indicator may display reduced engine power. Code P0299 (turbo underboost) keeps on showing up. I was going to look at one tomorrow. I have a completely stock '06 LBZ and have been nursing my truck along this summer since it occasionally throws the CEL for turbo vane I have a pair of trucks local to me with 4094/72mm chargers on LMM's. There is almost no boost and the truck stays in limp mode. Deleting the egr the right way on a duramax. com was founded in 2006 and created a site which houses some of the 07. 6 LMM Duramax 100,000 miles. Duramax leaking exhaust through up pipe passenger side also showing why you should do Just had my 07 LMM go into limp mode with a P0299 code. I tried to turn it back on it it sounded terrible so I turned it off. P0299 turbo underboost. It's normally set by aftermarket air filter/boxes, air leaks in the intake tract, maf installed backwards, or something that has altered the amount of air going into the engine like an intake leak, boost tube leak, egr valve flowing when it shouldn't, or an Since then, I got the Turbo Underboost code (P0299). Interesting p0299 code experienceReplacing fuel rail pressure sensor code p0191. 06-07 LBZ & LLY Duramax Powertrain LBZ Turbo Fix: P0299 & P2563 Codes, Exhaust Downpipe Tips The P0299 is a turbo underboost while the P2563 is the turbo boost control position sensor circuit. 000 miles. 6L LMM Duramax Specs. Duramax Fourth Generation: 2007. Leveled with 295 75 17s. Take a 1500 4WD Suburban and put a 2007. For optimal results, we recommend pairing it with a billet compressor wheel and 360 Chevy and GMC Duramax Diesel Forum. 6L Duramax LMM Short Block Workhorse series engines: 600 HP rated. Now my boost DTC P0299: Turbocharger Engine Underboost Circuit/System Description The manifold absolute pressure (MAP) sensor measures the pressure inside the intake manifold. I'm guessing it was failing the self test on startup because the vane position table was telling the vanes to open more than needed and the max position was more open as well. I just reset the CEL then roll on. performancetruckproducts. dude dont put the fear of death in himits not a huge deal if you ton tow a ton and in P0299 Turbo Underboost! LBZ: Jump to Latest 19K views 7 replies 5 participants last post by MJZZZ Dec 12, 2017. Save Share Reply Quote The following is the change history log for Black Maxx tuners that was previously hosted by H&S Performance before they closed down. Interesting p0299 code experience . Jump to Latest 32K views 3 A diesel truck – especially one with a Duramax engine – is a big investment, and you want to take care of it. Turbo underboost. Trouble codes P0299, P0116, and P0181 all decided to pop me a visit. Yesterday I hoped in the truck and rode around the block and the "Engine Power Reduced" message came on and my MIL. maf p0101. Must do some upgrades. Jump to Latest 3K views 2 Got home and pulled code p0299. EFI Live by DuramaxNate, Raptor RP1004G Lift Pump, 5 inch 07. EGR delete, EFI live with switch (DTS), down pipe, 4 inch flow pro with muffler, fass fuel system. The kits will fit all PICK-UP trims, cab and box lengths. The vane position sensor controls the unison ring and turbo vanes located within the Duramax’s Garrett turbocharger. The best bang-for-the-buck LMM Durmax upgrade is a tuner. The order you sent me is missing some parts the one you sent me has two clamps and one boots. even when the engine light is on when it's throwing this code, it pulls A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Just bought a stock 05 Chevy Duramax 6. LMM Duramax, Allison 1000 6-Speed Edge Insight CTS2. Picked up the truck, and engine light was still on (second red flag about the shop). I have a 08 lmm with the banks econo mind tuner and speed brake, Just had a new Garrett Powermax stage 1 installed . From all out performance builds running 8 second ¼ mile territory, to 2000hp sled Code p0401 chevy duramax Code p0401 chevy duramax New lmm owner with p0401 Solución para el código de falla p0401 chevy silverado: significado. 3. P0046 CODE TURBO BOOST CONTROL SOLENOID DURAMAX LLY LBZ LMM GMC Sierra. I tightend the turbo inlet fittings, one was a bit loose. Pulled Code P0299, turbocharger underboost. Jump to Latest 21 - 31 of 31 Posts. 2008 2500HD 4wd z71 Crew cab lmm. The one I My 2007 LBZ throws the P0299 code on occasion too. 5-2010 (LMM) P005B/P005F Code Problems. '10 LMM and 04. ) I specifically asked him to check the turbo for anything wrong, and he said the turbo is in 100% condition, it's just that solenoid is sticking sometimes not allowing the vanes to fully open. 2007. A revised software calibration has been released to address this condition. From the DP DTC look up feature, I found P0005=Fuel Shutoff Valve A Ctrl Circ/Open, but I have no idea if this is a Duramax code. :help . The light only comes on when at idle, and the fuel pressure goes from 4. Your P0299 your truck is not hitting the desired boost numbers for some reason, mechanical maybe your desired airflow/ MAF tables are incorrect causing a discrepancy. The For example, if you search around, you'll find that a common fix for a P0299 in VWs is to replace or repair the diverter valve or wastegate solenoid. 6L Duramax diesel engine between the years of 2007. Line-X. By harleyd33 in forum Duramax LB7 Mcrat 20 20 and p0101 p0299. 2009 Duramax continues to reduce engine power and throw P0101 code after 2 new dealer replaced MAF sensors. Any help would be much appreciated. 0L Powerstroke di 2021 Corvette Stingray Coupe 2LT, GT2 Seats, Z51 Performance Package W Magnetic Selective Ride Control, Front Lift Adjustable Height Memory, Performance Traction Package, Engine Appearance Package, CustomCarGrill front grill inserts inside and out, RGS Grills for the intake vents on both sides, Power Labs manual control for the LED engine bay P0299 - Chevrolet Diagnostic Trouble Code (DTC) Definition, Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . LBZrcks; Aug 5, 2009; Replies 0 Views 2K. 26 June 19, 2012 – Medium duty truck surging addressed. But in extreme conditions, the vehicle may get stalled 07. By bob_22r in forum Duramax 06 LLY / 06+ LBZ & LMM Replies: 5 Last Post: June 2nd, 2013, 06:05 AM. Already went through and check for leaks, cleaned/checked the sensors, MAP sensor seems alright. While these causes and solutions are common for this code, check out your specific make and model vehicle repair manual to determine the source of the issue if you’re still having pressure and performance issues with your turbocharger or supercharger. Within the first few months of getting the truck I pulled my boat up a grade making a pass by a few trucks and it threw the P2263 and P0299 codes with the reduce engine power 2015 GMC Sierra 2500 HD Denali; Banks Ram Air, Monster Exhaust; Pedal Monster; Banks Technicooler w/3" boost tubes; Duramax Tuner DSP5 SOTF tuning; Fass lift pump; S&S CP3; Banks iDash SuperGauge x2 w/dual stealth pod; 4. Similar to its predecessor, the LMM has very few actual engine problems. Toutle Duramax; Apr 30, 2023; Replies 15 Views 757. D. Test the HCI for proper flow quantity prior to replacing the I have the EXACT same issue as OP. 5" BDS Lift; Fox 2. 6L Duramax LMM. Chevy. 25 May 29, 2012 – Firmware 1021 capable, PCH 2. About us. The LMM Duramax refers to Chevrolet Silverado HD and GM Sierra HD trucks equipped with the 6. beast2008 Discussion starter 17 posts · Joined 2015 Add to quote; Only show this user #1 · Aug 22, 2016. 6. pdf. I pressure checked the system, no leaks. ECM & TCM Tuning; Cold air intake; Downpipe; 4″ or 5″ exhaust; Intercooler; If you would rather consume this content via a video, check out our How to Build a 450 WHP Duramax LMM video below: 1) Engine & Transmission Tuning. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. last week I had a grid I have a 2009 lmm duramax and the p0299 piped up two days ago. How to Fix the P0678 DTC Code on Duramax (Expert Insights) Check Details. 03Duramax4x4. The 6. 7K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. pwbh qazse kurutvzrw skh zveb jbhxx vjw uhnbiug pmlwoj fuq