Just signed up to the forum. October 18, 2020. The 3.0-liter Duramax turbo-diesel engine produces a total of 277 horsepower, meaning that it's down 77 hp from the standard 355-hp 5.3-liter V8, and down a further 183 hp on the optional 420-hp . Fill the tank. An inexpensive remove tuner for the Duramax LML. I'll eventually get a spade tuner for the truck when I get the money. Just to bring you up to date, I got my 2020 Sierra crew cab on February 4th and to date it has 2230 miles on it. However, there is a big detail prospective buyers need to know about this engine. Some people tried the Blue DEF Platinum and it caused the truck to display some errors. With the new segmented DEF level gauge, it is possible that after adding 5 gallons (18.9 L) of DEF that the gauge reads as a full tank after the fill event. They do 1 Ram turbo, 1 Ford 6.7L turbo, and 1 duramax def tank heater a month like clockwork. the emission reduction fluid tank heater may be faulty on some 2020 silverado 1500, silverado 2500hd/3500hd, sierra 1500,. Three issues we see over and over are: Inadvertently putting DEF into the diesel tank. I have no idea whether or not there are problem issues with the 2021 Duramax, but hope not. Worst 2021 GMC Yukon Problems by Category. And that means light-duty trucks and SUVs GM has made in the last three years specifically 2019, 2020 and 2021. It gets used frequently enough that its normally always fresh. By cioservices I had my 2021 LT Trail Boss with the 5.3L engine towed to the dealership yesterday. So that diesel and 4WD combo have worse mileage for 2021 than in 2020. Loved the 6.6 - it was a beast - no hill to high or steep! LML DEF/Urea Storage Tank Erase. 4X4 DblCab SB, Duramax, Graphite Metallic, Leather, BFG LT285/65R18's . Anyways the notification pops up that I have 500 miles til slow down. Here's my advice on how to avoid them. 3rd - replaced sensor 2. 6.7L Powerstroke. Their rig's DEF head (sensor) put . Problems like the EGR valve failing or getting stuck open may also happen to your Duramax 3.0. Verdict. My average fuel economy is between 27.5 -28.5. Our adventure truck is down again with another issue. Whether you own an LB7, LLY, LBZ, LMM, LML or L5P Duramax, we are the experts you can count on! requirement of Top Tier fuel. My truck has just over 5k miles due for first oil change and DEF was getting low. "Such catastrophic failure often causes the vehicle to shut off while in motion and renders it unable to be restarted because the vehicle's fuel injection system and engine component parts have. Other than that truck is awesome. kingfisher # . The Duramax engine is a good workhorse engine for a truck and will get the job done. Do you have to put that DEF stuff in it? It's an oil belt, not a chain or gear drive. 1. NRA Member - Life, Benefactor, Patron Re: 2021 Duramax Issues . have it towed immediately and the tank removed and emptied. The second recall involves 331,274 Chevrolet. General Motors created a buzz when they released a small block inline 6 3.0-liter Duramax diesel for a variety of trucks and SUVs like the 2020 Chevy Silverado 1500 and newly updated 2021 Chevy Tahoe. 2021 RST Duramax with 1k miles. I have 17,000 miles and my check engine light came on. Because the 2021 Silverado with Duramax diesel and four-wheel-drive dropped three miles-per-gallon in Highway driving over 2020. kingfisher # . #1. Specifically, they found: GM Authority reached out to Chevy and got the following reason for the drop: "The 4WD 3.0-liter configuration went up in its test weight class, which led to slightly reduced fuel economy to 22 city/26 highway/24 combined. Also, you have to drop the transmission to service the belt. There is a lot of this happening right now and depending on the severity its either engine replacement or a very expensive repair bill. The 6.6L version came with the new technology in 2007. My Chevrolet silverado 1500 duramax has the check engine light on and after one trip to the dealership,. Went to move the Tahoe from the street to the driveway tonight and it wouldn't start. The regeneration cycle will not complete with the truck sitting still. Sure enough I fill it up and two days later the . Right now thousands of trucks are currently affected by the issue in my link below. Ah, somebody better tell Chevy that mileage is supposed to get better each subsequent year, not worse. 2021 LM2 Sierra 4x4 crew std box Sold 2018 L5P Sierra 4x4 SB, 2011 LML Sierra 4x4 . Drive a bunch of miles. The 6.6L L5P Duramax engine is present in 2017-2021 GM heavy-duty diesel trucks . Nathan writes " A month ago I purchased a 2021 GMC AT4 with . if you do, do not try to start it. Can't wait for the tuners to come out with "> mpgs" tunes and "crank up the boost" tunes At first glance it seems that any vehicle with a 3.0-liter Duramax diesel including the Silverado, Sierra, Suburban, Tahoe, Yukon and Escalade can have issues with long crank start times or no start. The 32.5% DEF solution is preferred for use with most SCR . Ford F-150 Lightning . Does it take a while for these new trucks to . The ride, handling, and performance is unbelievable. Many people think their 2017 - 2020 L5P Duramax needs a bigger intake and bigger exhaust to make power. Most of these malfunctions are due to a lack of maintenance. 2. Totally new to DEF and the mfr. Also, the pump DEF at many truck stops works perfectly fine and is usually slightly cheaper. The new Allison transmission lets the narrow-revving 445-hp Duramax diesel shine. Started to add DEF and it spilled every where. A common engine-related call involves diesel exhaust fluid (DEF). Once you press the "F1" button, the engine will start to restart. First, you can force it to go to the proper position. 2021 Powerstroke. Other Duramax LLY problems included the following: Head gasket failure Injector harness chafing Water pump failure EGR valve issues Glow plug failure Fuel pressure relief valve Lack of factory lift pump The 3 Most Common Duramax L5P Engine Problems MAP Sensor Failure Allison 1000 Transmission Fuel Injector Failure (#4 Injector) Finding 3 problems with the L5P was difficult. Jan 5, 2022. The current solution from GM is reprogramming the truck so the DEF . E. E. Received message today 171 miles until speed reduced to 65mph with 5,395 miles on my 2021 GMC Sierra Denali 3.0 Diesel. Eastwood. For the Chevy Duramax Diesel, the code P20B9 indicates an issue with the DEF reservoir heater. Problems like the EGR valve failing or getting stuck open may also happen to your Duramax 3.0. The Debut of the LP5 Duramax. Read More ENGINE AND ENGINE COOLING. 3. Edge Insight CTS3 Review. Duramax Truck News, Products, Reviews and more! Their motorhome's DEF (diesel exhaust fluid) system tossed a code that could have "derated" their rig - meaning, don't drive too far, and don't drive faster than five miles per hour. We recently received this question from Nathan, who just purchased a 2021 GMC Sierra 1500 AT4 with a 3.0L Duramax diesel I6 engine. . I think as long as these trucks use DeF there will be the potential for problems. if any DEF is put in the fuel side, attempting to start it or even turn the key on will pump DEF into the lines, fuel filters, etc and will blow the engine if you . May 20, 2022. 1st - cleaned emission sensor. Help? The DEF fluid level sensor will also commonly fail. Why not simply do away with the migraine entirely. 1) in order to reduce the exhaust Oxides of Nitrogen (NOx) levels within the Selective Catalyst Reduction stage of the exhaust aftertreatment . Ford F-150 Lightning Is Even Quicker Than Expected. Posted January 22, 2021 I used just regular Blue DEF by Peak and never had any issues. Most of these malfunctions are due to a lack of maintenance. Averaging? Many customers have been waiting over 3 months for parts. If you need to, you can also change the oil and filter. Turns out the DEF pump located inside the tank was bad and because the pump is in the tank the whole tank had to be replaced. Owners may contact GMC customer service at (888) 988-7267 or Chevrolet customer service at (800) 222-1020. Keith_Schumaker 2021 Sierra 3.0 duramax- DEF ISSUES. Next day I buy two containers of DEF fluid. (Along with all the other junk that goes through) For what I have seen, the 3.0L 1500 series has yet (knock on wood) to have any issues. Hundreds of people are waiting on parts for repairs. That's where this package comes into play. I got to get one of those. 4th - cleaned senor and did upgrade on system. LML DEF/Urea Storage Tank Erase. Ah, somebody better tell Chevy that mileage is supposed to get better each subsequent year, not worse. 2021 LM2 Sierra 4x4 crew std box Sold 2018 L5P Sierra 4x4 SB, 2011 LML Sierra 4x4 CCSB, 2010 LMM Sierra 4x4 CCSB, 2004.5 LLY Sierra 4x4 ECLB . This goes for while driving (sitting in gear at a red light), or just in park. GM's number for this recall is N202324251. Re-fill and do the calc. If you take care of your Duramax engine, it will last for many years . At first glance it seems that any vehicle with a 3.0-liter Duramax diesel including the Silverado, Sierra, Suburban, Tahoe, Yukon and Escalade can have issues with long crank start times or no start. Eastwood. In this video, we are joined by Jeff Zurschmeide who took a 2020 GMC Sierra 3.0L Duramax Diesel on the 2020 Alcan 5000, a 5000 mile winter rally through Cana. There was a recall on the DEF tank for freezing/tank heater problem, but was fixed and no trouble on my rig. The 3.0-liter Duramax diesel engine in the 2021 Chevy Silverado 1500 may have a design flaw. In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring. Diesel Performance. Total cost wasn't bad - in the range of $2500 for DEF/DPF and an additional $1500 for delete and removal of the EGR vs just blocking it off for around $500. My truck has just over 5k miles due for first oil change and DEF was getting low. The Silverado 2500 HD's drivetrain comes refreshed for 2021 with a smooth 10-speed Allison automatic transmission. Tows great. Officially, this engine is also found in the 2020 GMC Sierra 1500, Truck kept turning over but wouldn't fire up! MOPAR Diesel Exhaust Fluid (API Certified) (DEF) or equivalent that has been API Certified to the ISO 22241 standard. And that means light-duty trucks and SUVs GM has made in the last three years specifically 2019, 2020 and 2021. I just picked up a brand new 2021 F-250 Lariat in Iconic Silver with the Blackout Package. In 2007, the Duramax diesel engine became a mainstay of the GMC and Chevrolet fleet, and with the introduction of the LML version of the diesel, GM used the new diesel particulate filter (DEF) technology. Fluid. Best to do the calc the same as would be done when doing a fuel usage calc. 2017 Canyon diesel was new in May 2017. The diesel engines (RPOs LWN, LM2, L5P, L5D) available on 2020 Colorado, Express, Silverado 1500, Silverado 2500HD/3500HD, Silverado 4500HD/5500HD/6500HD, Canyon, Savana, Sierra 1500, and Sierra 2500HD/3500HD models use Diesel Exhaust Fluid (DEF) (Fig. There is already a huge thread on here. I'm not 100% sure low DEF is not the problem, but strongly feel like it is the least most likely candidate for what's wrong. 2. The 3.6L gas mentioned- shy away. H&S MiniMaxx DPF and EGR Delete Race Version; The very best remove receiver for the Duramax LML; LML DPF Erase Pipeline. Tested: 2021 Chevy Suburban Diesel Should Be the Default Choice. If you take care of your Duramax engine, it will last for many years . So now I gotta wait till the dealer is open tomorrow and have this pos towed there. Dec 2, 2021 The 'level indicator' is not repeatable / accurate enough that calculation. Yes, the knock is a "normal" issue with the '20-'21 trucks. I have a leveling kit on with 265/65/17 falken atw3s, grille guard and will be adding rocksliders soon and possibly a sport bar. Other convenient changes to the L5P Duramax in 2020 including a relocated DEF tank and DEF fill location and new bed steps to access the front of your truck . If you want to change the air filter, you can press the "F4" button. TSB #03-06-01-023E Date Announced: APR 27, 2022 NHTSA . More often than not, it will be the heater itself that must be. The 2WD configuration remains best-in-class with 23 city/33 highway.". I get DEF from the gas station pumps, not the jugs, or from the contractor who goes through it so much they have the 250gal totes filled weekly on the right-of-way. 2023 Mazda CX-50 Tested: More of a Good Thing. If poor-quality fluid is not replaced within 200 miles, the vehicle speed will be limited to 55 mph at the next vehicle start. Any one of these is a potentially major issue that can cause significant damage to your equipment. 3.0L real life mileage report on baby duramax. If the system's warnings continue to be ignored, vehicle speed will ultimately be limited to 4 mph in accordance with federal and state requirements." Published on. November 13, 2020. Final note, there have been repeat customers that have dropped DEF into the diesel tank. Towing is from sea level to 8K feet. Re: 2021 Duramax Issues. 2nd - cleaned emission sensor. The ideal fix is to use Duramax aftermarket parts like a cold air intake and either an aftermarket turbo inlet or one from a stock LBZ engine. 1. While many forums would lead you to believe this, it's simply not factual. never ever ever ever ever ever ever ever ever ever ever ever ever ever ever ever put DEF in the diesel side. This newer version has more advanced emission controls. October 18, 2020. What is service emission system 2019 duramax. The Emission Reduction Fluid Tank heater may be faulty on some 2020 Silverado 1500, Silverado 2500HD/3500HD, Sierra 1500, Sierra 2500HD/3500HD; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the 6.6L Duramax diesel engine (RPO L5P) or 3.0L Duramax diesel engine (RPO LM2). DEF is a non-toxic solution of 67.5% water and 32.5% automotive grade urea and is one of the key elements of the SCR system. You can receive assistance in locating DEF in the United States by calling 866-RAMINFO (866-726-4636). There is some speculation that General Motors has shared that 18,000 vehicles are struggling with that issue. Also, that's not the normal msg I received for low . LP5 2020+ DEF TANK HEATER MELTDOWN. Improper handling of DEF. GM has no timeline on when parts are available. 6 times since then it has flipped the DEF and ENGINE codes and each time went to the dealership. Published on. Help Us Get to 1,000! It is known as part of the line of new-generation diesel engines, with its predecessor being the 6.6L Duramax V-8 LML. Thanks to all of you "Diesel Place Members" who have replied to my post. I've got a 2021 Sierra elevation with duramax. . Unfortunately, it happened. Edge Insight CTS3 Review. If this has never happened to you, it sucks. I have no idea whether or not there are problem issues with the 2021 Duramax, but hope not. That's where this package comes into play. 2021 6.7L Powerstroke Buyer's Guide. The most common problems on the DEF systems are the NOx sensors failing. 8. . GM Paill Berthierville 2021 GMC Sierra 3500 WORK TRUCK DIESEL from www.gmpaille.com Find out how gm reduced emissions by up to 63%! W. However, if the actual level of DEF is just entering the last segment on the gauge, the gauge is likely to drop by one segment shortly after driving after the fill event. After I got it home, I was thumbing through the menu items and saw that the DEF was low. The 4 Most Common Duramax LML Engine Problems CP4.2 Injection Pump Failure DEF Heater Problems NOx Sensor Failure DEF Pump Failure The buzzkill of the LML is the CP4.2 injection pump. Love the way it looks love the interior but facing a no start at 1k miles is unacceptable. Went back in to the dealer before I even left the lot and saw the service advisor and the diesel tech who both said it was normal. kingfisher #16192029 06/22/21 . 1. Outside of this problem, there aren't many major or costly common problems associated with the engine. Rejoined the Forum in order to learn from you guys with 3.0 Duramax experience. There are a number of different ways to force the regen on a Duramax. 2-5mpg fuel economy improvements More efficient and reliable turbo Less backpressure in exhaust Lower EGTs No more regen cycles No more need for DEF fluid Better reliability and less potential repair costs A tune is required to delete the DPF system so the majority of the gains you see are going to be from the tune. Weight of boat and trailer is 5K to 6K lbs. Click on a category below for details. 2021 Sierra 3.0 duramax- DEF ISSUES. There are many 3.0 Duramax owners who experience common malfunctions, such as injector failure or turbocharger failure. This was in-efficient and often caused problems on trucks with any sort of performance modifications. H&S MiniMaxx DPF and EGR Delete Race Version; The very best remove receiver for the Duramax LML; LML DPF Erase Pipeline. We recently received this question from Nathan, who just purchased a 2021 GMC Sierra 1500 AT4 with a 3.0L Duramax diesel I6 engine. NRA Member - Life, Benefactor, Patron Re: 2021 Duramax Issues . engine problems NHTSA: 5. brakes problems NHTSA: 4. electrical problems NHTSA: 4. seat belts / air bags . Because the 2021 Silverado with Duramax diesel and four-wheel-drive dropped three miles-per-gallon in Highway driving over 2020. 2021 GMC 1500 LM2 CC std box sold 2018 GMC 2500 L5P CCSB 4x4 previous '11 LML, '10 LMM and 04.5 LLY Save Reply My father in law has a shop. If poor-quality fluid is detected, the system will alert the driver. If the Emission Reduction Fluid Tank . This informational bulletin provides information on 6.6L Duramax Possible Oil Leak Path Information. I have a new 2021 Silverado (<5000mi) with a 3.0L Duramax diesel engine. Truck Camper Adventure Switches to BlueDEF Platinum. 3. The new gearbox is a welcomed addition to the unchanged 6.6-liter V-8 Duramax turbocharged diesel engine ($9,890) from previous years. It has high purity requirements - defined by the International Organization for Standardization specification ISO 22241-1, and the American Petroleum Institute. Feb 22, 2020. Nathan writes " A month ago I purchased a 2021 GMC AT4 with . The DPF does NOT restrict your horsepower. I tow a Cobalt 226 boat and trailer less than 2000 miles per year. I picked up my 2020 Denali 2500 hd duramax this week and noticed a loud knocking at idle which increases in volume as the engine warms up. DEF Poor Quality Reset - Chevy and GMC Duramax Diesel Forum Like 20 city and 40 highway? 2. The dealership wasn't exactly sure and said they would need to get it on a lift and expect it. While these engines are still relatively new, they seem to be extremely reliable so far with very few "common" problems that haven't been solved or addressed. 1K. This truck is really amazing. I just completed a 4000 mile cross-country trip from Oregon to Massachusetts towing a 3600lb RV trailer and it quickly became apparent that I have a problem with the DEF system. General Motors has issued a service update for certain examples of the Chevy Silverado HD and GMC Sierra HD pickup trucks equipped with the 6.6L L5P V8 Duramax diesel engine due to an issue related. Our Ram 3500 Cummins 6.7L truck went into the dreaded "limp mode" on a recent trip here in Arizona. The 6.6L V-8 Duramax Turbo Diesel Engine is the creation of General Motors and first appeared in the 2017 Chevrolet Silverado and 2017 GM Sierra HD. Feb 16, 2021. Haynes Chevrolet Silverado GMC Sierra: 1999 Thru 2006/2WD-4WD (Haynes Repair Manual) Chevrolet and GMC Pick-Ups (1988-2000) (Haynes Repair Manuals) Dodge . I also understand that starting in 2018 or 2019, the ECU is of a new design that makes it impossible to do any deletes, at least this way. Next day I buy two containers of DEF fluid. Re: 2021 Duramax Issues. Tuning manipulates every critical command in your engine such as timing, fuel, and boost. February 10, 2021. The alarm on the dashboard read, "5 mph Max Speed in 100 mi, Service DEF System, See Dealer.". There are many 3.0 Duramax owners who experience common malfunctions, such as injector failure or turbocharger failure.
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