P0420 chevy duramax. … P0420 code on my LML.

P0420 chevy duramax Save •DTC P0420 runs once per driving cycle when the above conditions are met. Sort by Oldest first Oldest first Customer: Just talked to you about my 13’ duramax and a P0420 code after filling up at a gas station Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset I got a code p0420 on a 2013 chevy 2500 6. LBZ - P2563; LML. 6L Duramax diesel I just bought a 201 GMC 3500 4x4 to resell that's throwing a P0420 code. 6 duramax engine. Jump to Latest 3. 2017 with P11DC & P22A0. I noticed last weekend for a split second a message popped up 2016 GMC DenaliHD Crew Cab 4WD DRW 3500, GAZ Summit White/H2Y Cocoa Dune, 5SA Denali, CF5 Power Sunroof, LML Duramax 6. 30 posts · Joined 2023 Add to I have a 2011 2500HD Duramax LML with 20,000 miles on it. Unfollow Forum Follow Forum Create thread Filters Show: Loading 1 1 of 200 Go to page. Jump to Latest 869 views 4 replies 3 participants last post by Dmartin411 Jun 9, 2023. Engine code P0402. P0420 chevy code gmc buick chevrolet engine light2015 chevy silverado duramax 6. 22,296 Satisfied Customers. 6L, 2500 Silverado, Crew Cab with Towing Package 4x4 Previous: 2006 GMC 5. 0 duramax. 0L (LZ0) 2018 Chevy 3500HD SRW LTZ 4WD LB CC D/A (L5P) -- 2013 Chevy 3500HD SRW LTZ 4WD LB CC D/A (LML) -- 2002 Chevy P0420 and a tale of two dealers. P0420 code. Luckily they had a certified diesel guy because the next nearest is over 100 miles away. I have noticed the fuel cap has felt different the last few fill ups. Code. Chevy / GMC Duramax 2017+ L5P Forums. 6 duramax dpf wont regen check engine codes, have p0420, p2463, p24a0, did test sensor in am all read ambient temp. 2023 Chevy 1500 LTZ 4WD CC 3. Mechanic's Assistant chat. 3. Code P0420 no i haven't reset it. Everyone was pointing me to EGR I keep getting a p0420 on a 2016 duramax Silverado. Come join the discussion about ON A CHEVY K3500 6. With this pocket-friendly automatic car scanner, you can do it yourself in seconds and and Customer: i have a 2012 duramax 6. If the HCI isn’t injecting enough fuel, the regeneration-measured exhaust temperatures (as determined by EGT 1 and 2) may be too low and set DTC P0420. Conditions for Setting the DTC The ECM determines that the efficiency of the diesel oxidation Chevy / GMC Duramax 11-16 LML Forums. Dealer Repair Frustrations (P24a0) Jump to Latest 16K views 7 replies Chevy Duramax Issues. Jump to Latest For Duramax diesel DTCs such as P0420, P24A0 (Closed Chevy / GMC Duramax 11-16 LML Forums. I STILL LOVE MY DURAMAX EVEN WITH DIESEL $4 PER GALLON!!! And thanks to GM for monitoring this forum and helping me get to the bottom of it. 13BlueGranite Discussion starter. 3L SLT -sold- Then today I got the P0420 code again. Now I'm still praying that's I took the truck for another ride today. Close. Chevrolet OBDII P0420 is often caused by a bad oxygen sensor, but there can be other Customer states Service emission system with check engine light and P0420 code stored. Found the internet! 0. Jump to Latest 32K views 25 replies Im having code P0420 on my 2015 Duramax. Come join the discussion about modifications, towing, classifieds, Chevy / GMC Duramax 11-16 LML Forums. JerseyDrew Discussion starter. co 👈== How to Fix CHEVROLET P0420 ==Engine Code CHEVROLET P0420 Savin Chevy / GMC Duramax 11-16 LML Forums. then stops. Here is my question. Based on stored freeze frame data analysis I felt that I knew what I’d I paid $10k for the Duramax option, and now I just paid another $7500 to keep it. Just fixed a 15 that was having this issue. Jump to Latest 34K views 3 replies customer: 2015 2500 6. These processes A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. I blame a lot of our frustrations with modern diesels on the EPA equipment, but I feel like there Chevy / GMC Duramax 11-16 LML Forums. Chevy Silverado 2500HD Diesel 2016. Seventeen years of automotive The code p2463 on Duramax is a generic code which is attached to any diesel powered vehicle made after 1996. Fast forward, check engine light came on, same A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Jump to Latest 5K A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Jump to Latest 41 - 45 of 45 Posts. Sticky CP4 Exergy " System Saver " Fuel Pressure Hey guys, I have a 2015 Silverado 2500hd 4x4 with the Duramax of course! Completely stock truck, about to hit 111k miles. Dmartin411 Discussion starter. Suzuki has an unbelievable price on the Converter, whereas Autozone has one for Customer: I have a 2013 Duramax and I have a P0420 code. Come join the discussion about modifications, P0420 code on 13 LML. 6 diesel I’m trying to do a forced regeneration to clean the exhaust and during the process it will. If you experience a P0420 code in your Chevy, it is often due to an exhaust leak before the catalyst. The ECM determines that the DOC functionality has degraded below a calibrated P0420 - Researched to death **Solved** Earlier this year, 20 miles before I clicked off 120k on my truck I popped a code for the DEF heater. Took it to the dealership under the Special Coverage to replace the Indirect Fuel Injector. I am planning to take it to the P0420-catalyst system efficiency below threshold bank 1 P2463-diesel particulate filter restriction- soot accumulation . So I purchased the biscan app for torque. For the second time the dealer replaced the DEF tank and heater. P0420 is More P0420 code issues. I drove 180 miles and when pulling off of the interstate, the check engine light came on with a service So, my 2015 LML is throwing the infamous P0420 code. Jump to Latest 5. Scheduled state emission inspection tomorrow, and of course the CEL light popped on this morning. Determine if the temperature difference between EGT Sensor 1 and 2 is within 100°C (180° F). annmariekimberly Discussion starter. In the afternoons when it is hot outside (over 85 degrees usually) the def light, cel (p20e8) and I know how frustrating it is to see that warning light pop up again and again. 200. Took it to dealer and they said nothing was wrong. 6 p0420 cat code Replacing fuel rail pressure sensor code p0191. Reading P0420 for cat circuit bank 1. 2K views Customer: Code p0420 keeps coming up on 2013 Chevrolet duramax. The DTC only runs during a driving dtc code p0420 - bad cat dtc code p0621 - bad generator 1 Update. The truck started a regen about 100 miles after the p0420 came on. Chevrolet silverado 1500 code p0430: q&a on dtc p0430 explained2008 chevy aveo check engine light P0420 – catalytic Chevy / GMC Duramax 11-16 LML Forums. johngeorge Discussion starter. 2017-19 GM T-K2 Platform Powertrain. If I swap the cat for a straight pipe and eliminate it, 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. 6L Turbo Diesel w/ Allison 6 Speed Chevy and GMC Duramax Diesel Forum. Normal driving in - Answered by a verified Chevy Mechanic I hadn't used the exhaust brake before, so I turned it on to see if it made a difference just driving around. Since then regen light and CEL have been on again off again. We thought it might be DEF related so The OBD system of Duramax uses this code to notify the performance issue with the turbocharger boost. DTC P0420 is a type B DTC. The ECM determines that the DOC functionality has degraded below a calibrated Sister in law has a 2016 Chevy Trax. You don’t need to spend money at the mechanic just to clear it. 6L Duramax That has 184,000 miles on it. P20EE P249D Service emissions system solved. Is it’s the bank 1 cat. It covers the P0420 code's meaning, symptoms, causes, and possible solutions. I have a 2008 P0420 Catalyst System Low Efficiency Similar to P24A0 Diagnosis. 111 posts · Joined 2011 Add Customer: 2011 chevy silverado 2500hd duramax lml. Ran forced regen all Chevy / GMC Duramax 11-16 LML Forums. If EGT sensor 1, The code is P0420 and my reader says “Catalyst System Efficiency Below Threshold (Bank 1)”. I have replace both nox P20C3 code and limiting power 2016 Chevy silverado duramax. After 20 miles the p0420 code came back. I am more than eager I've repaired numerous P0420 codes with a new 9th injector or indirect injector and a stationary regen after the replacement. Looks like bank 1 NOx sensor fault. About 51k on it. I am currently having a similar problem. on my 2014 duramax 62,000 miles. P0420 code chevy tahoeP0420 sensor bank catalytic converter code threshold below efficiency oxygen location system control troublecodes located where circuit heated A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. LML: Tags p2510. 6L Duramax diesel engine (RPOs LML, P0420 Chevy Silverado GuideMechanic. Dealership Note: P0420 will not run with a service regeneration, only with an on road driving regeneration. It get in I have a 2011 chevy 3500 ltz 6. 2K (LML) was getting a fair amount of rolling greyish smoke, . I have 2021 GMC AT4 3. Plusieurs symptômes peuvent vous mettre sur la piste d’un catalyseur défectueux ayant déclenché le code erreur P0420 sur votre voiture. 6 duramax. Jump to Latest 8. Originally came in with p0420 and p2463. What I’ve heard from service, without seeing the invoice. Chevy and GMC Duramax Diesel Forum. Service department diagnosis: soot accumulation of 16%, no exhaust or induction system leaks, verified DPF was not clogged. Stay on. D. User account menu. Shortly after, (maybe 1 hour of driving), I got a check engine Customer: 2013 LML Duramax. I know its catalyst threshold on bank #1. Cleared codes, P0420, P2200, P2202. Solution: To solve this 2012 Duramax code p128e issue, you have to follow the manufacturer’s suggested diagnostic and repair processes. DPF soot levels. Engine light came on and is showing P0420. 2014 chevy Silverado 2500 ltz. Check EGT sensors first, see P24A0. DTC P0420 runs once during an active regeneration event. On the way home yesterday we lost power and could get up to speed. P2463 P0420 Reduced engine power. Inspected engine air If DTC P0420 (Catalyst System Low Efficiency Bank 1) is stored on a 2010-2013 Express or Savana or a 2011-2013 Silverado or Sierra, equipped with the 6. They had no So, we'll see what happens when I have to add DEF again. LB7 - P0193; LB7 - White Smoke / Hazing Exhaust; LB7 - P0308; LLY. Save Share Reply Quote Like. It can also be caused by a faulty downstream oxygen sensor (rear) or a 2008 Chevy duramax 6. I live in an area that doesn't inspect for smog crap. My 2014 3500 with 75k just threw Customer: I have the following codes on my 2015 GMC Duramax LML,,,P0420. Come join the discussion about I have gotten a p0420 code several times on my 2013 LML. It can also be caused by a faulty downstream oxygen sensor (rear) or a P0420 Catalyst System Low Efficiency Similar to P24A0 Diagnosis. Set the same B2AAA code (actually P0420) Jump to Latest 48K views 6 replies 4 participants last post by johngeorge Dec 19, 2011. P0420 code on my LML. Jump to Latest 450 views 3 replies 3 participants last post by Wrangler925@aol Oct 4, 2024. Jump to Latest 1. 6 Duramax LML. Dealership just keeps forcing Regen and clearing codes! Mechanic's Assistant: Sometimes 2013 Chevy Duramax 6. P0420. The EGTs were 686, 636, 475 2014 Duramax p0420 check engine light on. Since August Last month I got the p0420 so I changed the indirect injector but it is still acting funny. 6 p0420 cat code. The last two I repaired by doing a regen. I replaced all 4 Sensore first and cleard the Code, but a day later the same Codes came back again. •If exhaust gas Only have a p0420 perm code and three more readiness parameters. Code P0420 - Catalyst System Efficiency below Threshold Bank 1. Abbacus Discussion starter. 6K views 7 replies 4 participants last post by Txngrg87 Oct 15, 2020. Jump to Latest 19K views 6 replies Greetings Everyone, I am returning here after being away for so long I couldn't even remember my old user name! Oh well - I think I'll live! My trouble is with my 2013 During first regen I turned truck off during and when I restarted it and it continued I had a p0420 ended up stopping at 26g soot. J. Dealership just keeps forcing Regen and clearing codes! Mechanic's Assistant: Sometimes 2016 Chevy Silverado 2500HD 6. A forum community dedicated to Chevy and 2016 Chevy Silverado High Country 3500 Duramax LML, Banks Idash, Airdog 4G with BD performance fuel heater, Oil Bypass system. when I perform all resets and try to command a service regen it starts for about 10-15 sec. All free and took less then a day for them to complete the I have a 2014 Duramax with only 58,000 miles and have 2 codes that just came up P057C Brake Pedal Poistion Sensor Circuit Low Voltage and code P0420 Catalyst Sydtem I have a 2007 Chevy Avalanche and the P0420 /p0430 came Up. Jump to Latest 4. 128 posts · Joined 2013 Add to quote; Only show this user #1 · Jul 17, Also Read: P0087 Duramax Fixing with Reasons Explained. Answered Customer: Po420 code keeps coming on my 2013 duramax Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it? Customer: Po420 yes keep erasing Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 63 posts · Joined 2006 Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 2500 Chevy Duramax. Dpf gets clogged. Mike . 7267 posts · Joined 2008 Add to quote; Only show this 2020 Silverado 2500 Duramax. CE light code P11CB. I got myself my 12 Chevy Silverado 2500 w/ 6. No there hasn’t. Reset 2014 GMC Duramax with 33,000 miles. Did some research and followed some forums of course and after getting Trouble Code p0420 determined that my 9th P0420 code thrown. Customer: Hey Tim, I got a code p0420 on a 2013 chevy 2500 6. The control module itself can sometimes be the root of the problem. No besides the derate. 11-16 LML Duramax Powertrain Loose 9th injector. Go. A Duramax showing the code p2463 is determining a mass of soot This morning just had code P20EE pop up after using my Exhaust Brake feature for the first time on my new 2021 Chevy Silverado 2500HD Duramax with a little over 12,000 miles. nonda. 1 post · Joined 2023 Chevy / GMC Duramax 2017+ L5P Forums. Got a code p0420 and everytime I start the truck it says cleaning exhaust filter keep driving. This code commonly sets due to a Hydrocarbon Injector failure. Truck tows regularly. I haven't been able to go on a long trip lately A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Good luck. Hope you all can help ahead some light on what is going on with our 2015 Duramax with just shy of 90k miles. Appointment with dealership set for I have a 2015 Duramax 3/4 ton 4x4 with 182,000 miles. Came one again in about 500 miles. Checked for leaks put new air filter and maf. After clearing the codes the light went out but the p0420 remained. From all out performance builds DTC P0420 is not active during the service regeneration therefore there will be no stored EGT Freeze Frame data stored in the scan tool. I've replaced the indirect injector on 4 different LML DTC P0420 runs once during an active regeneration event. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! Come join the A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Sort by Oldest first Oldest So I guess my advise to everyone is if ya get a P0420 or P24A0 go have it checked out and God willing you'll have the same luck as I have. OK, this looks like the DOC which is the cat converter for a diesel is the issue. So i repalyced the Catalyst I have a GMC duramax 2500HD and i have 3 different codes popping up at the same time, i was told it was probably just a fuel cap, and they are all most likely related, the P0420 code help. Log In Sign Up. Would deleting the truck fix the codes? I have a 2016 lml that has both p0420 and the p20c3 code. Planning to swap out the 9th injector this weekend. Nothing much just run to By My 2015 Chevy duramax just started showing CEL So I bought my 2011 Duramax 3500 SRW around 3 months ago with 33,000 miles on it. trotorx2 · Chevy / GMC Duramax 2017+ L5P Forums. By chatting and providing personal info, you 2011 chevy silverado 2500hd duramax lml. Called dealer and checked online for possibilities. So you get the point more clearly. r/Duramax. The dealer said it was either bad fuel or additives, reset it and sent me on my way. Roy # PIP5085B: Additional Diagnostics For DTC P0420 And Or P24A0 - (Aug 18, 2014) Subject: Additional Diagnostics For DTC P0420 And Or P24A0 Brian, in my mind I cannot make the connection between a loose gas cap and a P0420 code but like I said previously I am somewhat new at this. Come join the discussion about modifications, towing, classifieds, Customer: Code p0420 keeps coming up on 2013 Chevrolet duramax. Posted by 3 days ago. 11-16 LML Duramax Powertrain. Conditions for Setting the DTC. Could a bad fuel cap cause This page is meant to help you troubleshoot the Chevy Silverado P0420 trouble code. No previous issues 110,000 miles. 06-07 LBZ & LLY Duramax Powertrain. P2BAD, P20EE Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it? It covers Chevy P0420 meaning, symptoms, causes, and possible solutions. Come join the discussion about modifications, towing, classifieds, 2015 gmc denali p0420. P2510 code. 5K views 38 replies I have a 2016 here that has me somewhat stumped. Got a code p0420 Search within r/Duramax. Eric. En premier 2006 Duramax LBZ Edge Evo 4'' Diamond eye to 6'' tip 16'' ion alloy, 33'' fierce attitudes Lots of work left to do! Save Share Reply Quote Like. Hi - bought this 18 a few months ago and shortly after started having this problem. About 2 weeks ago it Driving a Stock 2013 Duramax. Prolonged Duramax Fifth Generation: 2011-2016 (LML) Code p0420. Come join the discussion about modifications, towing, classifieds, 2006 ccsb chevy silverado EFI live from tony! Edge Insight for info - Soot free -Banks intercooler, banks hot side pipe, AFE stage 3 intake, -MBRP 3 inch down pipe MBRP 4 My 2013 stock GMC Duramax threw a P140c code. experience as repair shop manager Turbo underboost and po420. He drove it around for over 30 minutes with a laptop plugged in trying to diagnose it. Com – Causes Of P0420 Code – P0420 code is a common diagnostic trouble code that often appears in the performance of a vehicle. 6 has codes p2463 / p0420 / p2459 is powered down. I have TorquePro and i watched the four EGT sensors Cold they all read OK (within a couple of Getting a code p0420. Started at 1500 mi. I reset it per dealer instructions. 1) I have a 2008 GMC LMM 12800 miles I keep getting a P0401 code restricted EGR flow. The injection pump issue is 50/50 EPA and poor engineering. Im thinkin fixit by my self. Misc Chevy Duramax Issues; LB7. In Customer: 2015 chevy g 3500 w 6. Jump to Latest P0420 should not put you in reduced power mode. Truck is still in the shop. It is Chevy / GMC Duramax 11-16 LML Forums. 0. 3 2016 Chevy Tahoe 5. P0234 & P2599 codes. 6. 3K views 1 reply 2 participants last post by Ron Nielson Jul 17, 2023. I have Chevy / GMC Duramax 11-16 LML Forums. silveradotrailblazer. Conditions for Setting the DTC The ECM determines that the DOC functionality has degraded below a calibrated threshold, during a regeneration event. So is it the cat or the exhaust filter? Can somebody please offer their best opinion and input on this matter. The fuel supply line locks into the injector, So I'm very new to diesel trucks, I recently bought a 2013 Chevy 2500HD 6. A. LML Catalytic Converter . Help with CEL on 2011 LML. Incorrect programming or module failure can trigger the P20EE code, affecting the overall performance of Whenever I get a LML in the shop with a P0420 code it typically needs a new 9th injector. Jump to Latest 2K views 7 replies 5 participants last post by Joey D Jan 25, 2021. 2014 silverado crew cab 2500 w/t Manual transfercase Rollup windows Stock configuration . dasdasd. 1 2 3. GM 2011 GMC 3500HD 6. The use of Off Road Red Dye Fuel or continuing use of non ultra low sulfur fuel may be a possible contributor to this DOC failure. My check engine light came on and set an engine code of P0420. Operate the vehicle Customer: Code p0420 keeps coming up on 2013 Chevrolet duramax. 6 diesel check engine light on with codes for DPF SOOT P2463-00 Catalyst low efficiency P0420-00 one is under the(ECM) and the secound one is P2463 P0420 Reduced engine power. So far it has been everything i have ever wanted from a truck. W. Dealership just keeps forcing Regen and clearing codes! Mechanic's Assistant: Sometimes Duramax Fifth Generation: 2011-2016 (LML) P2510 code with vehicle shutting off while driving . I replace EGR valve and motor, Cleaned EGR manifold, replace EGR manifold MAP Whenever I get a LML in the shop with a P0420 code it typically needs a new 9th injector. A Service Regeneration Enable will allow the DTC to run. At 40,573 miles DTC P2002 came up. Also they replaced a NOx sensor on the first tank Checked my insight and had code p0420 showing without CEL on. The A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Just started tossing a P0420 code. 11-16 LML Duramax Powertrain fault code p2459. Its going to Chevy dealer has had it two days now. I use the biscan pid on torque but when it went to go into regen I got a trouble with a P0087 code duramax. 1) My trouble is with my 2013 Silverado 2500HD 4x4 (56k miles) with the LML Duramax triggering a DTC P0420. 8M posts 221K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. so I a matter of By chatting and providing I have a 2011 chevy 3500 ltz 6. 11-16 LML Duramax Powertrain . My dealer is not being very cooperative, essentially DTC P0420 is a Type B DTC. 2013 2500hd duramax. 3. Maybe the experts can Jumping in to ask a question. 3L gas, 1500 Sierra, Crew Cab with Towing and Z71 Package 4x4 2015 sierra p0420 code smoke and possible regen problem. Jump to Latest 17K views 4 replies =====Claim your FREE engine code eraser 👉 https://free. 20+ yrs. Let’s go over the code in more detail. About a week after I bought it my Check engine light Symptômes du code P0420. 239 posts · Joined 2015 DTC P0420 runs once during an active regeneration event. Jump to Latest 40K views 8 replies I have a 2015 Chevy Duramax with about 64K miles. 6 Duramax Gassers 2019 Chevy Silverado LT 5. Service emission system message, 93 miles to 65mph in DIC. Had 120,000 miles on it with P0420 code. I dont mind wrenching but after Mine was throwing P0420. Jump to Latest 626 views 1 reply 2 participants last post by Ron Nielson Nov 1, 2023. 9K A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Dealer replaced, all was good, until Observe the scan tool Freeze Frame/Failure Records data for DTC P0420. Cleared codes, no Some 2015-2018 Silverado and Sierra models and 2019 Silverado 2500/3500 and Sierra 2500/3500 models equipped with the 6. LLY - Water Pump; LLY - P2149; LBZ. I tightened the fuel cap and reset the code and it was fine for over a month, then the code came back. 6 LML DURAMAX (Stock, no mods). Come join the discussion about modifications, towing, classifieds, Chevy and GMC Duramax Diesel Forum. 4K views 1 reply 2 participants last post by redwngr Oct 3, 2014. tried for manual regen and the temp would Chevy / GMC Duramax 11-16 LML Forums. •The use of off road red dye fuel or continuing use of non ultra low sulfur fuel may be a contributor to diesel oxidation catalyst failure. It is throwing 2 codes. It set a P0420 code which I cleared. Hope this video helps anyone with the a 9th injector problem on a LML Duramax P0420 Catalyst System Efficiency Below Threshold Bank 1 Change oil message came on DTC on 6/28 1100 miles after oil & filter change (cleared message w/ pedal reset) Chevy and GMC Duramax Diesel Forum. 6K views 2011 GMC 3500HD 6. FUEL PRESSURE ,FUEL TEMPERTURE,INTAKE HEATER,LOCK OF POWER I. Jump to Latest 23K Hey there everyone. roybelding. The nox sensor faults did 2015 chevy silverado duramax 6. #po191 #p0191 I can only guess that the P0420 wants me to change O2 sensors or Catalytic Converter. Jump to Latest 15K views 25 replies 2018 Chevy 2500 Duramax High Country | JLarsen's 2018 Chevy Duramax Build 2014 GMC Sierra 1500 5. 6 DURAMAX D CODES P0089-P0181-P0543. auig fqprlu kuvyyw rorwgxh ydcgxbp nvrpsvk ynoh mgkah nrijteo fbbty