Consumer Reports: Chevy Silverado and GMC Sierra Have Major Engine Problems

Consumer Reports has some unfavorable things to say about the pickup vehicles Chevy Silverado and GMC Sierra. It claims that dependability and engine problems are becoming more prevalent. According to CR’s most recent survey of all 2021 cars, these trucks are tied for the position of most likely to experience serious engine issues.

credit – https://cars.usnews.com/images/article/202106/128703/01-2021-GMC-Sierra-Denali–silverado023_Cropped.jpg

What are the “engine and reliability issues?”

Because the two pickups are “the same trucks sold under different labels,” according to CR, they are connected. Additionally, 4% of Silverado and Sierra customers reported having significant engine difficulties in the past. These included cylinder head problems and replacing the whole engine. These included valvetrain difficulties, failures of the head gasket, problems with the supercharger or turbocharger, and timing chain or timing belt troubles.

The Silverado and Sierra both scored one out of a potential five points for dependability, which is the lowest possible rating. Ownership over the last 12 months is covered by the survey. Because they are all relatively new automobiles, CR observes that “it doesn’t take a high percentage to stand out. After all, the first few years of a car’s life are supposed to be trouble-free.

These problems ought to have been resolved by the refresh that was published this year. Additionally, GM performed a pre-refresh with the introduction of the 2022 Silverado 1500 Limited and 2022 GMC Sierra 1500 Limited. But even if the new 2022 models have fixed these flaws, there may still be difficulties with the earlier models.

RELATED – Is the 2022 GMC Sierra Denali Ultimate Worth the Extra Cash?

Sierra and Silverado offered six engines in 2021

For 2021, there were four normally aspirated engines, a 2.7-liter LB3 turbocharged four-cylinder engine, and a 3.0-liter LM2 I6 turbodiesel Duramax engine. These featured the naturally aspirated 6.2-liter L87 V8 gas engine, the 5.3-liter L82 V8, the 5.3-liter L84 V8, and the 4.3-liter LV3 V6 engine.

Over 17 main trouble area categories, the consumer watchdog organization ranked the models most likely to experience issues. The group also includes problems with the Major Engine, Engine Cooling, Transmission, Drive System, Electrical System, and Climate systems. The reliability data used in this analysis comes from surveys of Consumer Reports members who own one- to three-year-old cars.

NEXT – GM Recalls More Than 700,000 Chevy Silverado, GMC Sierra Trucks

2021 Chevy Silverado: 3 Most Common Owner Reported Trouble Spots According to Consumer Reports

50 thoughts on “Consumer Reports: Chevy Silverado and GMC Sierra Have Major Engine Problems”

  1. I have a 2021 Silverado with a 6.2 dynamic valve timing and at 20,000 miles I bent pushrods. They replaced only the side that was messed up. …… I currently have a rough idle and it uses a lot of oil for a new vehicle. When the 1st issue happened it was using a qt. Every 10% of oil life, until replacement. It’s currently using a qt. Every 20%. No doubt it’s going to be an issue with valve buildup with the direct fuel injection.

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    • Any more info on oil consumption from other owners. I have same engine and it was guzzling oil first 10,000 miles but seems to be slowing down quite a bit – thank god!! Not sure if the mechanics behind that but it definitely happened.

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      • How do you make a major vehicle manufacturer pay for a new engine or a new truck?
        I guess if the lemon law was in affect in your state but I’ve heard it takes atleast 3 episodes of the same major issue before they will even consider replacing an engine or the truck or any vehicle So it would probably be a long hard battle to ever get them to consider replacing anything free of charge and they all have there crooked lawyers to keep it in the courts for yrs and your lawyer in the mean time will be soaking up your money.

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        • When I had a problem with my trailblazer I mean it was 15 years ago 16 years ago I warned them that I would park across the street with a big sign that said before you buy a new Chevy Or GMC truck come and talk to me. After one day of me being crossed straight from the dealership they asked me what do Iwant them to do? One of the owners of the Chevy dealership my son and his son play baseball together for five years . He told me I should call the Better Business Bureau to start wheels in motion . Instead my wife sent it to the attorney general’s office of Indiana and I lost a friend for a little while but within a week They told me to pick out a to me with a 0% new vehicle…. My vehicle was in for service 42 days over five months. What turned my stomach is after all the work they did and couldn’t fix it they told me it was a characteristic of the vehicle. And that just makes you mad. I hope this helps

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      • I drive truck over the road and have had many new trucks over the years all the new trucks I have broke in used oil like they where wore out they do that till the rings seat to the cycles then it will settle down it aucks but that’s why they call it a brake in pierd the biggest then I have learned driven these trucks is drive them like you plan to from day one don’t baby it so it brakes in for how your going to use it and it will work how u want it to later you treat it differently in the beginning it could make it not preform how u want it to later

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    • I have a 2022 Silverado pickup and the check engine light just came on.. I was informed they have no loaner vehicles and I couldn’t get a leased vehicle unless I spoke with a manager.. I’m still waiting on a call back , two weeks later..

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      • I haven’t bought American made vehicles in 30 yrs.
        I stick with Toyotas mostly but even they are having issues with there newest Tacoma and Tundra’s now.i guess america has built them long enough to make them junk to.and I say that being an American that loves this country and hate were going electric.But making a beautiful looking truck like the GMC and chevys are means nothing if the damn things won’t run and there in the garage alot.
        I have a land rover now and it’s got a Ford engine in it and have had issues with the coolant system and cost me $3000 to have land rover fix.
        But I love the vehicle and with what’s being built now for the ridiculous prices I will stick with my land rover for as long as I possibly can.
        $70,000 to $100,000 for a new American truck just isn’t happening with me.
        People that have and will pay that kind of money for this junk today are morons.
        Save your Damn money and keep what you have for 10 yrs it’s a helluva lot cheaper to fix issues then buy these new issues there building

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  2. I had a 2012 Silverado 6.6 duramax broke a crank with 150.100 miles on it. Chevy would not do anything to help me and all it pulled was 5th wheel camper. I was very upset with them that’s why my next truck will be a Dodge. I hope everyone takes warning.

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    • Heck dodge ram has there engine and transmission issues just like the GMC CHEVYS and FORDS do.
      There all junk in the motor and drive train departments.
      I won’t buy American anymore and haven’t for decades.
      Doesn’t seem to matter what make ya go with even Toyota is having issues with the new Tacoma and Tundras.
      They more the charge for them the less reliable they are. $50,000 to $100,000 for any truck is outrageous and I’m not falling for there crap.
      We all need to boycott all makes and models and keep what we have for 5 or 10 yrs and watch what happens.
      There prices will come down real fast.there will be more race tracks full of brand new vehicles sitting around because they can’t sell them anymore cuz everyone says to heck with there greed and crappy quality vehicles.
      It’s time to fight back. We don’t need to trade vehicles every 2 -4 yrs.

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  3. I have an 08 Silerusto crew cab 4×4 . I had to spend $340. On a module that plugs into the OBD to keep my 5.3L from going into 4cyl mode ACTIVE FUEL MANAGEMENT. Before I did that, anytime I took my foot off the gas pedal a loud rattling noise further front, even the GM dealer couldn’t figure it out. After a few tube videos, People with the same problem bought this module, and swore by it . I bought it also, NO PROBLEMS SINCE ! Bad Engine design GM !! My Toyota 4Runner is a 05’ with 223,000. Miles 4.0L v6 No issues .

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    • I have also a 08 Silverado with 5.3. Have had some issues with it I fixed it myself. It has 320,000,00 on it . Have religiously changed the oil every 3,000 or less miles. Just starting to have lifter noises in it. I think I know how to fix it . Have used and still do use

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    • When I purchased my 2021 Silverado the first thing I did was to install that module. That Dynamic Fuel Management System is garbage and GM knew it.

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  4. I have an 08 Silerusto crew cab 4×4 . I had to spend $340. On a module that plugs into the OBD to keep my 5.3L from going into 4cyl mode ACTIVE FUEL MANAGEMENT. Before I did that, anytime I took my foot off the gas pedal a loud rattling noise further front, even the GM dealer couldn’t figure it out. After a few tube videos, People with the same problem bought this module, and swore by it . I bought it also, NO PROBLEMS SINCE ! Bad Engine design GM !! My Toyota 4Runner is a 05’ with 223,000. Miles 4.0L v6 No issues .

    Reply
    • How do you make a major vehicle manufacturer pay for a new engine or a new truck?
      I guess if the lemon law was in affect in your state but I’ve heard it takes atleast 3 episodes of the same major issue before they will even consider replacing an engine or the truck or any vehicle So it would probably be a long hard battle to ever get them to consider replacing anything free of charge and they all have there crooked lawyers to keep it in the courts for yrs and your lawyer in the mean time will be soaking up your money.

      Reply
  5. It really is ashame the quest for mpg has placed such a strain on these engines. The keep destroying lifters problem goes back over a decade. When you use an inconsistent like oil to stop cylinder from working you are going to create problems. I replaced my lifters and disabled the system truck is always running on 8 cylinders and havent had any issues

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  6. I have a 2014 chevy Silverado with 76000 miles on it. second owner one lifters collapse 7300.00 to repair. GM should be picking up this cost but won’t becuse. Not a safety issue . Trading in for Toyota.

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  7. Three engines at 95,000 miles been in the shop more than it’s been driven 6.2 L 2019 high country Silverado, Kansas City. Still have electrical issues and have had since day one.

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  8. I had a 2020 Silverado High Country with a 6.2 L. No problem at all. I have a 2022 Silverado Custom with the 4 turbo and it is a beast. Absolutely no problems with either.

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  9. I own a 2017 v8 Chevy Silverado custom bought it brand new at Quirk Chevrolet in Braintree mass. After Two years they had to replace my transmission now I have a really bad idle and a lot of smoke coming out of my engine I got a lifter code and a coil pack code and a fuel injector code. I’m coming out of my pocket to repair this truck because I replaced my coil packs and my fuel injectors so they want to void my warranty after telling me I have no more coverage only to find out I still have the 100,000 mile coverage being I did the work with my uncle who is a mechanic they want to void me and have me pay…… All codes were cleared except for the code P0300 same problem still. I need help. I owe 26000 but want to just trade it in.

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  10. 2010 5.3 was making Noise from lifters from day one I buy it from the dealer they said it was normal Noise till it warms up it burns 2 quarts of oil a week and smokes and shakes
    Don’t know what to do !
    I think they should replace motor for me !!!!

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    • Same here. 2010 5.3 with 150 k miles, lifter went out. It was ticking way back from the beginning I rem taking to my service advisor about it. Cost me 3k to replace all 8 of them. Never gonna purchase any GM vehicles ever again!!!

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  11. I know this is for newer models but nothing has really changed. I have a 2016 that had an AFM lifter failure under 70k miles. Common enough for a TSB but not enough for a recall. Perusing various forums, seems to be a relatively prevalent issue. 4.5 grand later, seems to be running well but I feel I’m on borrowed time. Happens again I’m doing a lifter and cam switch to delete the stupid AFM altogether.

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    • That won’t help to just delete. It has to be eliminated which require mega mods and high expense. The valve train architecture to facilitate this ridiculous active fuel management system is highly complicated and it the genesis of all the engine problems.

      Reply
  12. I own a 2016 yukon denali and at 100000 mileles the motor blew apart. Come to find out the exhaust valve springs are hollow and should be replaced at 80000 miles because of life expectancy. Well my 6.2 broke a exhaust valve spring and dropped a valve at highway speeds and broke a piston that inturn cracked the block. When taken to the engine rebuilder the only salvagable parts was the 2 tappat pan covers the oil pan and 1 head. I had it custon rebuilt to remove the displacement on demand system and with a 100000 mile warranty cost me $14000 out the door.

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  13. I’ve been a Chevy owner for decades . Why would a company knowingly pump junk ? It certainly does not promote brand quality and brand loyalty. I still don’t understand why dealerships don’t have fleet vehicles onsite as the had in the past now you have to order on so we are force fed what gm what’s us to buy

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    • GM figured out a long time ago that people will keep buying them regardless of how good they are. They were given a reset by the tax payers when they earned the right to go broke so why should they change a business model that works? I have a 2013 Escalade, bought it 1 year old, I have put nearly $20,000 in parts into it and to reward me it has no started to rust. EVEYWHERE. I knew better, I had almost the same story with my last one…

      Reply
  14. I have a 2021 Gmc Sierra
    With 225k
    And number 3 cylinder lifter went out
    Dealer told me $7500 to replace with new cam and both banks of lifters replace

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  15. I don’t get how the new 2.7 turbo 4 banger can have start-stop technology. Is the motor still pumping oil to the turbo even when the truck shuts down at a red light,if not I can’t see the turbo lasting very long.

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  16. Anyway I have a 2016 gmc 1500 with the 5.3 and 6 speed auto,the truck has 200 thousand klicks and has been rock solid reliable. Knock on wood.

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  17. General Motors/Chevrolet has a huge problem with lifters.. 2019 Chevrolet Silverado trail boss.. At 20500 miles bank one lifters go out. Replaced under warranty. At 72000 miles those very same lifters go out again at highway speeds totally destroying the engine. We have yet to go and pay for the new engine because we are battling General Motors over this issue. Having been a General Motors/Chevrolet man most of my life I feel violated. It doesn’t matter what happens next, I will never ever purchase a general motors vehicle ever again.. In 2020 I believe there was over 260 lawsuits filed against General Motors over problems with their vehicles. In comparison to Ford with only 18 filed. And I believe Toyota had 30 or 36 law suits filed against them. maybe Ford should just buy out General Motors and show them how to build an automobile that’s worth a darn..

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    • I have a 2003 silverado SS has 300000 miles on it,I run the hell out of it daily,also many times at the race track on weekends. It runs
      12.20’s at 116.mph every run! Never had a problem with this engine! NEVER!
      I also have 3 other radio’s a 2016,2020,2022.noproblems.go buy you a Ford diesel,see what kink of BS you get! OH guess who Ford gets that 10speed transmission from?
      GM !

      Reply
      • Boy Dennis must’ve pissed you off in any account at Ford transmission 10 speed to 10 R 80 versus the 10 L 80 results arrived off of Ford’s idea of the f6r80 if you have a clue since GM made their own version off the Ford basis you might want to think before you speak I own four GMC‘s from 1971 down to 1966 and mostly Pontiacs from 2008 to 1973 and 1 65,,as far as GM goes the rest of my crowd I’m mostly Ford nine to be exact I’ve been a diesel gas technician for over 48 years I’ve seen a bunch and now I’m seeing a lot of junk both sides of the venue just bought a Nissan pro X4 great shape cheap Japanese made not US best use vehicle I’ve bought in the last 32 years

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  18. All GM motors with active fuel management, or whatever they are calling it now days drink oil like a kids drinks koolaid. Bought an 08 silverado suburban for my wife with the 5.3l and myself a gmc sierra with a 6.0 vortex max. Both brand new 08’s. At 25k the suburban was drinking oil, they decarbonized the rings, because 3 of the 4 thay shut down in 4 cyl mode were stuck, than they tried to tell me that it was okay to burn a quart of oil every 1,000 miles….but the manual says run 7,500 miles between oil changes and the motor holds 6 quarts, please. Had 32k on the GMC and it started doing the same thing. Tool it in the +=@ and trading them in on a hyundai for the wife and a ford for me. Too bad they destroyed the 5.3 motor with active fule management. Wish i would have just kept my 99 silverado and ran it anither 100,000 miles.

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  19. I have Always been a GM man. I was thinking of buying a newer GM truck but after doing some research on the problems with them and GM not backing their products I Happily bought a Dodge Ram truck and I will Never be back.

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  20. Most manufacturers have made junk at one time or another, had 06 trailblazer with 490,000 km no issues 2nd transmission 4l60e is the weak link, 05 Sierra slt 390,000km runs like a beast, Ford had made engines for over a hundred years when they decided to put 3 threads on the spark plug of triton v8s, the plugs removed themselves. Then the fix with next Gen was a spark plug crimped together with 20 threads…. good job boys that plug ain’t going anywhere. Gm north stars used small diameter fine threads in aluminum to clamp the heads.

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  21. Sorry all I have a 2014 Silverado 1500 5.3 with VVT, 226,000 no issues. The only way I’ll give it up is when pull it from my cold dead hands!

    Reply

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