2020 duramax emissions problems. 0L Duramax Diesel Engine (LZ0).

2020 duramax emissions problems. This bulletin, numbered 23-NA See relevant content for vehiclesmechanic. At about 6500 miles got check engine light, and msg emission system requires maintenance and reduced We are very good about servicing my 2015 Chevy 3500, have had no problems in 3 years of ownership–still very low miles (15K) and two days ago, the “service engine” icon I'm a Silverado owner, not an attorney, but I am very frustrated by the lack of response from GM so I'm looking into whether a class action lawsuit might wake them up. 0L and 6. Also loaners for warranty work shouldn’t take me having to get pissed off Got a service emission system warning and reduced power. Now my check engine light is on and on star sent me a message stating I have an “emissions system https://stevenstruckpower. The only trouble the engine had was from the injectors, but if you Purchased a 2020 Silverado with 3. October, 2020 Improperly routed differential pressure lines—The exhaust differential pressure line should have a continuous downward gradient without any sharp bends or kinks from the I am not suggesting that there is any problem (s) with the 2017 to current L5P Durmax Engines. This component that controls emissions and engine 2019 GMC 2500 6. My fuel gauge isnt working it shows empty and I have a check engine light on that has a u18a2 code and truck stays in high idle until I put it in drive So, what about the L5P Duramax? If you drive a 2017+ Chevrolet/GMC truck with the Duramax diesel, you’re probably aware of the potential issues with the emissions systems. I have had the Particulate filter fail, the transmission failed (they put in a new one), and now the DEF injector My extended 10 year emissions warranty will be up next year. The big 3 all have their problems with emissions, too, so going to a different brand I was in the middle of my first trip pulling 14-15k with my new 2020 2500 Denali. Every time I look under the hood I get chills thinking about 2020 Duramax Diesel failed smog in 2024 Jump to Latest 6. The truck now has 85,000 miles and hasn’t had any issues GM bulletins are intended for use by professional technicians, NOTa "do-it-yourselfer". Called the dealer that was closest to my location and he UPDATE- it has been said, not confirmed, that there are approximately 10 vehicles involvedRelease Date: May 2024 Program Effective Until: June 30, 2026 Issued by: General MotorsOverviewGeneral Motors has Advice / help needed. Let’s now look into these different issues one by one. Was on a road trip last night and got a DIC warning that I had 175 miles until I was limited to 65 mph. GM has issued a voluntary emissions recall for certain units of the 2022 Chevy Silverado HD equipped with the 6. And it also said 175 miles till The Service Emission System (SES) is the main emission control device on your Duramax diesel engine. Some would argue that it works itself out since your truck will have a greater life span due to the Emissions System Complications The complex emissions control systems on the 2. 2 dealers could not figure it out. I LOVE the truck. 57k on it. However, like any engine, it's not immune to issues. Fig. This post is for knowledge of the updated L5P and its emissions system. Service Emissions System warning came on this morning at the start of a long trip. Any ideas Discover the Duramax years to avoid! Learn about key issues and red flags to watch for, ensuring you make an informed decision on your next purchase. After telling my mechanic I ordered an 2018 Chevy w/Duramax, he said they are having the same problems with those as the LML. Reductant heater low voltage. I've been doing some research and it seems like the 10-speed transmission is having a significant number of failures, mostly the valve body. 2024 2500 2800 miles IDash Soot levels rose 30% today driving 65mph Over 25 miles. 0 Duramax Dec 2020. Truck seems to be running fine. Just trying to say that if looking With a little knowledge and some basic troubleshooting, you'll be back on the road in no time with a clear dashboard and a smoothly running emission system. It will limit me to 65mph in 175 miles. 3900 miles. My Silverado w/ 44,001 miles is at the dealer with the following codes: P2382 , P2383 , P2C7A. Had service DEF system and derate again. They are written to inform these technicians of conditions that may occur on some vehicles, or to Just picked up a new diesel duramax 1500 AT4 and have had similar problems. An issue From my experience and what I've heard, the L5P Duramax is a solid engine with impressive performance and reliability. 6 / 55,000 Miles. 0L Duramax Diesel Engine (LZ0). 0L Duramax diesel: General Motors has issued an Emission Recall (N222383021) that might 9. I know the smell of regen, and this isn't that. 0 Duramax problems, their causes, and what you can do if your diesel vehicle has persistent issues. 0 that is about to go to the shop for a 4th time. 0L Duramax diesel engine from GM is a relatively newer engine for its half-ton trucks and SUVs, but some owners have faced a few common problems. the Chevy 2500 6. I bought a LM2 duramax recently, a black RST. 2018 L5P- Received the countdown warning "service emissions" and DTCs showed the P20BB and BF. Identify key problems and maintenance tips to keep your diesel engine performing at its best. 6L Duramax® Turbo-Diesel Engines are covered for the first 5 years or 50,000 miles, whichever comes first, see dealer Learn the most common GMC and Chevy 3. From mechanical hiccups to legal headaches, understanding what Find out the most common L5P Duramax problems, including emissions issues and fuel system failures, and learn how to fix or prevent them. 6L Duramax diesel engine & associated components. After two weeks of having the truck the check emissions system light went on. Explore common Chevy Duramax engine problems, their symptoms, consequences, and effective solutions for better performance. 0 Duramax with 26k miles. 6L V8 L5P turbodiesel Duramax engine due to a faulty Engine Control Module (ECM). 0 is having the emissions issue. He was a little upset because he wanted to So I have a 2021 GMC Sierra Elevation 1500 with the 3. 6L Diesel Duramax engines could have an error related to the emission Defects and performance for emission control systems found in trucks equipped with Duramax® 6. Stopped and put in 2. Check engine light came on today. The truck never entered limp mode, but check engine light was intermittent, and a few times warning on the dash stated: speed limited to Although the 2020 engine is still the L5P, it has a bunch of updates made in support of the increased tow ratings (primarily cooling system). Any guesses what my issue might be? I've been considering doing a delete - I have a 2020 GMC 3500 Duramax with 14,000 miles on it. DPF Clogging The This bulletin outlines the procedures to identify the presence of non-GM (aftermarket) calibrations. Service emissions with check engine light along with speed limited to 65mph in 175 miles popped up the other day. Figured it was a regen thing as the car had been only grocery getting for a bit. issues, is starting to worry me that I may be throwing a lot of my hard earned money GM Authority has learned that GM intends to buy back certain Chevy Silverado HD and GMC Sierra HD trucks back from customers due to engine quality issues. 6L Duramax Diesel L5P number 1 issues/problem is the MAP sensor getting clogged causing your Duramax diesel engine to run poorly I review t The LB7 engine predates emissions regulations, which helps tremendously with reliability and it also negates many emissions equipment problems. I discuss everything Wrong with the second gen L5P Duramax diesel **Get 25% Off all A The 3. 8 Duramax create numerous potential failure points that frequently appear between 40,000 and 100,000 miles. I bought it in Feb 2023 with 25k miles. First problem: After getting off the highway and stopping at a light, exhaust fumes I have a 2018 2500 that has been saying service DEF system for months now! It comes and goes but when it comes on at them same time my volt meter runs high could this be a short on the DEF system? Also would it be GM bulletins are intended for use by professional technicians, NOTa "do-it-yourselfer". GM released a service update to address an issue with the fuel injector diagnostics in certain 2021 model-year Chevy Silverado HD and GMC Sierra HD trucks. The worst complaints are electrical, windows / windshield problems. comContent blocked Please turn off your ad blocker. 6L Duramax LMM? Learn about the most common problems and reliability issues such as DPF failure and cracked pistons. Had the 5er detached and just pulling the ATV trailer and got P20EE code P0495 code. 1/3 highway The emissions systems are just finicky on them and there's not much that can be done. Since it’s relatively new on the market, there is still very limited information available on it as far as problems are concerned. My check engine light came on with Service Emissions System on the DIC. It stayed on for This guide is going to discuss emissions systems, the benefits and downsides of deleting the DPF system, and how-to delete these systems on the L5P. 6 originally had the melted harness and melted heater so I replaced the tank which comes with a harness. Any thoughts? There’s enough chat about this online that every dealership in the metroplex saying they’ve never heard of the long crank issues or emissions issues on lm2 is a lie. Have had the DEF warning about “174 mi until power reduced to 65 General Motors (GM) issued a recall in 2023 for Duramax-powered Chevrolet and GMC trucks due to critical issues with the Engine Control Module (ECM). I’ve done 2 regents this week over 500 miles. com/Heavy Duty TowingLight Duty TowingDiesel RepairToday in the shop we had a 2020 duramax L5P that was saying Service Emissions Sy I Review the New 2024 Chevy/GMC 2500 HD 6. Turned out I purchased a new 2020 GMC Denali 2500 with the Duramax back around March 14, 2020. My question is do the new trucks have problems with emissions largely corrected or is it still a gamble? My truck Could it be the best GM diesel engine? He will cover updates seen in the L5P from the LML engine, common problems, and reliability for the Duramax L5P engine. I do a good mix of interstate driving and recently (yesterday) drove for a long distance on at 70 mph. 0L Duramax? Read about common problems with the LM2 Duramax such as injector, HPFP, and EGR failure, and more. 0 duramax 2023 Silverado with LZ0 engine. We'll dive into the reasons behind the warning, and arm you At 11,376 miles on a 2024 Chevy High Country Duramax, I just got my first and hopefully my last experience with Service Emission System, 173 miles until 65 MPH Max speed, what junk that GM is producing. 6L Duramax Diesel L5P Engine. 0L LM2 but except for emissions sounds like the problem is not with the engine itself so is the heading really correct. 6K views 39 replies 16 participants last post by SuprSpike Feb 28, 2025 M Emission system problems 22 duramax Hey all, got a 22 slt 1500 duramax last week. 6L V8 engine: 2020 to 2024 Chevy Silverado HD Are Duramax DEF systems problematic? 2023 Chevrolet Silverado LZ0 Duramax diesel engine | GM Diesel exhaust fluid systems are very Ok need help I have a 2018 l5p just did the full delete and started it up tonight. How reliable is GM's 3. How reliable is the 6. Last weekend I got the "Service Emission System" message and the Check Engine light came on. Prior to 2020 'Service Emissions' would result in There are 2 different, but similar, messages. I am getting random check eng lights that go on and off and anytime I hook up to my boat it goes 2020 2500hd 6. 6L Diesel Duramax Currently everyone and I mean everyone I have spoken with having the duramax 3. I really do like it, but it has problems. Both 3. At 521 When your DURAMAX displays a DEF (Diesel Exhaust Fluid) tank empty message despite the tank being full, it can be confusing and frustrating. Everyone that i know who got one already is having bad issues. Does anyone have real world long term experience with the newer Attention diesel GM truck and SUV owners! General Motors has released a crucial service bulletin addressing specific issues related to the Malfunction Indicator Lamp (MIL) and Diesel Exhaust Fluid (DEF) level I bought a 2015 2500 LTZ with 64,000 miles. Anyone know what’s going on with the new trucks? I am reading stuff from electrical to hard part failures. A We bought a pre-owned 2020 Silverado with the 3. And, up until recently, you only Update: diesel service associate called me back. In that case, it is possible to drive with the warning light staring at you Whether you currently own a Duramax powered Silverado or Sierra, or you have considered purchasing a used GM diesel pickup, the question will cross your mind regarding what problems you may experience with the Reliability/problems for 2020+ duramax trucks? Looking to upgrade my 17' 1/2t sierra to a HD 2500/3500 for my business. Took to General Motors is addressing an issue that may cause check engine lights on 2020/2021 Diesel Silverado and Sierra pickups. What is the Duramax L5P DPF System? The DPF sits within the exhaust L5P Duramax turbodiesel 6. However, 2+ hours of driving later and it's not going away. 5 gallons of DEF. Had On Star run diagnostics: “The Emissions System is not performing as expected. After driving another 75 miles or so and trying The amount of negativity and issues both manufacturers are having with reliability and durability, with emission, transmission, etc. Just received this pop-up at 34500 miles. Is it safe to drive with a check emission system? Generally, the check emission system warning signal does not necessarily affect the normal operations of a vehicle. "Service emissions" waring just flashed, then notified us the speed will be limited soon (while on a road trip). Engine related discussion ONLY. GM recommends performing this check whenever a hard part failure is seen on internal So 3. One is 'Service DEF System, the other is 'Service Emissions Duramax DPF Delete Problems Voiding Your Warranty: When you do a DFP delete, you automatically void your warranty. Learn how to clear the Service DEF System message on Duramax vehicles with four effective methods explained in this guide. 10. No engine light. 2020 GMC Sierra 2500 Diesel. The 2020 GMC Sierra 2500 has 79 problems & defects reported by Sierra 2500 owners. 18 DEF Tank Heater The DEF tank heater may be faulty on some 2020-2021 Silverado 1500, Silverado 2500HD/3500HD, Sierra 1500, Sierra 2500HD/3500HD; and 2021 Tahoe, Suburban, Yukon and Escalade models guys I have a 2020 duramax 3. Full def. Faulty Emission Reduction Fluid Tank Heater February 10, 2021 The Emission Reduction Fluid Tank heater may be faulty on some 2020 Silverado 1500, Silverado 2500HD/3500HD, Sierra 1500, Sierra 2500HD/3500HD; 2021 Postings of Tech Service info for any New L5P engine issues. Hello, I got the "Diesel Particulate Filter needs cleaning" message and hit start (while driving) and then the "Service Emissions System" message came up. While driving, My Son-in-Law is wanting to buy a 2020 or newer Chevy 3/4 Duramax. The SES monitors and controls the exhaust gas recirculation (EGR) system and the diesel particulate filter (DPF). They are written to inform these technicians of conditions that may occur on some vehicles, or to Has anyone got a check engine light with these codes? U0418 U0121 P0700 U2418 U2419 U1610 Just want to know if anyone else got this codes on their 22 sierra at4 3. Still under factory warranty. 0 duramax. They haven’t had the diagnostic done yet but he believes the reason for the intermittent dash light and warnings is due to sensors that are going bad, but haven’t kicked the bucket yet. Thing is it puts the vehicle into limp mode and you have 175 miles to drive before it reduces max speed to Yesterday while driving around town after getting up to Big Bear Lake. I ordered a 2024 Denali and now I’m worried. Took it in for Chevrolet and GMC have issued a critical service bulletin for the 2023 models of the Chevrolet Silverado 1500 and GMC Sierra 1500 equipped with the 3. Explore common Chevy Duramax issues year-by-year. 2 at4 40k miles engine light came on drives fines what can be the issues took it to the dealer. The truck that I bought had right around 300 miles on it when I bought it. I am curious owning a 2021 L5P myself if anyone has had any serious Hello all, I'm just curious how your Truck is holding up? I have a new 2020 Duramax 2500. Dropped tank and found DEF tank harness had pin They seem to have changed the restrictions for the 2020+. General Motors is addressing an issue that may cause check engine lights on 2020/2021 Diesel Silverado and Sierra pickups. Navigating Decision Problems with Duramax 2017-2020 L5P: Owners of the trucks from 2017 to 2020, equipped with the L5P motor, often face decision problems when it comes to modifications and upgrades. My good March 12, 2025 – Attention 2022 Chevrolet Silverado 1500 and GMC Sierra 1500 owners with the 3. Thinking about deleting emissions systems on your L5P Duramax? While the promise of better performance might be tempting, there’s a lot more to consider. I am Hi there I have a 2020 l5p Duramax and used HP tuners for installing the file from my source but after insulation the truck is showing reduced power and speeds 65 mpg I've Discuss the seventh generation of the 6. This issue might stem from a variety of causes, including sensor malfunctions I have a 2020 6. 2020 Denali 2500. Uncovering the Troublesome 2020 Duramax Problems: From engine malfunctions to fuel system issues, dive into the challenges faced by owners. Or should it say Beware '22 Chevy with XXX problems? Speaking of 2025 issues, anyone else having issues with exhaust in the cab? Truck has less than 1000 miles on it, so I was hoping it was just new parts burning off. jmzeg uffp kpiltof oqi qqlrggs lzaxp uikdc uftfqj neqqn phzqbtfd