Engine And Engine Cooling Problems of Chevrolet Tahoe - part 1

I dont believe the correct fix is changing oil viscocity.

See all problems of the 2023 Chevrolet Tahoe 🔎.

I am submitting this complaint to the national highway traffic safety administration (NHTSA) regarding a sudden engine failure in my 2021 Chevrolet Tahoe equipped with a 6. 2l v8 engine, which posed a serious safety risk. I was driving on the highway at approximately 65 mph with cruise control engaged. Suddenly, the vehicle lost all power, disengaging the cruise control, and the check engine light began flashing rapidly. I managed to exit the highway safely. While stopped at a traffic light, preparing to turn into a nearby repair shop, the car started shaking violently from side to side, making it difficult to control. I took the vehicle to a firestone shop and a local Chevrolet dealer, both of which diagnosed massive engine failure and indicated that the engine will most likely need to be replaced. The symptoms I experienced—sudden loss of power at highway speeds, flashing check engine light, and violent shaking—are in line with issues reported in other gm 6. 2l engines that have been recalled. ? for whatever reason, my 2021 Tahoe, which falls in the middle of the affected model years for these recalls (e. G. , gm recall n252494001 for 2021-2024 vehicles with 6. 2l v8 engines due to defects in connecting rods and crankshafts leading to engine damage and loss of propulsion), is not included under the broader gm 6. 2l engine recall, ? although I experienced very similar issues. The biggest safety concern was the engine essentially losing power at highway speeds, which could have led to a crash. I urge NHTSA to investigate and expand coverage if necessary to ensure public safety.

See all problems of the 2021 Chevrolet Tahoe 🔎.

The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated. In addition, the contact noticed an abnormal ticking sound. The vehicle was towed to an independent mechanic, where the vehicle was diagnosed with a misfire in cylinder #7. The independent mechanic checked the spark plugs and other unknown parts for failure; however, there was no evidence of a failure. The contact was informed of a valve lifter failure. The contact was informed that the valve lifter and possibly the push rods and camshaft needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact referenced technical service bulletin: n212353840; however, the VIN was not included. The contact was advised to contact the NHTSA hotline to report the failure. The failure mileage was approximately 87,893.

The idler pulley was squealing. Dealership I took it to said this was the 3rd one they've had to replace in the last few days.

The contact owns a 2024 Chevrolet Tahoe. The contact stated that while driving approximately 35 mph, there was an abnormal knocking sound coming from the vehicle. The vehicle stalled, and the message to "press the start button” was displayed. The contact was able to restart and drive the vehicle. The contact stated that the following day, while driving and depressing the accelerator pedal, the vehicle hesitated before accelerating, with a rattling and tapping sound coming from the vehicle. The contact continued driving; however, the vehicle stalled with the message to “press start button” displayed. The contact attempted to restart the vehicle however, the check engine warning light illuminated. The vehicle was towed to a dealer, but was not diagnosed. The vehicle was not repaired. The contact stated that prior to the failure the contact experienced failures with the vehicle related to NHTSA campaign number: 25v274000 (engine and engine cooling). The contact had taken the vehicle to the same dealer approximately 3 months prior for the recall inspection. The dealer stated that the engine had passed the inspection, and an oil change to a higher viscosity oil was performed. The contact then noticed the abnormal engine ticking sound and became aware that the engine was not responsive while depressing the accelerator pedal following the inspection. Additionally, the engine was idling roughly. The dealer was contacted, but informed the contact that the engine had passed the inspection. The contact stated that the recall had been removed from the VIN and was listed as completed; however, the vehicle experienced engine failure and was currently at the dealer. The manufacturer was informed of the failure. The failure mileage was approximately 25,000.

See all problems of the 2024 Chevrolet Tahoe 🔎.

My Tahoe is throwing a low engine oil code and burns through about 2 quarts of oil in between oil changes. Other Tahoes of the same year make and model have been recalled for the same issue but mine was not.

The rear differential makes a rubbing or humming noise when turning left/right at slow speed especially when it’s cold.

I bought this 2023 chevy Tahoe rst brand new from the dealer and about a few months of owning it I noticed that the truck was needing oil before the next oil change. It’s as if it was consuming itself. This continues for month until last week when the truck died on me. I was able to jump start and everything worked fine for a day. The next day things got worse. I was on the highway and truck started shaking and giving off all kinds of codes. I took it to dealer and they said I needed a new battery but that there was also an engine problem. I bought a new battery and none of the messages on dash resolved like I was told. The truck is u drivable motor is knocking and was even making loud popping sounds. Of course my truck just hit 64,000 miles so gm is saying I’m out of warranty. I should not be having these types of issues on an almost brand new truck that I’ve owned 2 years. Engine light is flashing and dealer said this means major issue.

Purchased new vehicle in September 2024, immediately after purchasing the vehicle the engine had a clanking noise. Took the car back to the dealership where they explained the noise was normal. The car continue to make clanking noise, but noise continued to get louder, took the vehicle back to the dealership for first oil change, verify the noise, and discuss safety recall received on the vehicle. Dealer told me the car was ok to drive. In October 2025, the vehicle loss power during acceleration with immediate re-start. After this incident, took the vehicle to another dealer where they inspected the vehicle again. The test failed and the car now needs a new engine. Car has now 10k miles in the odometer and has been sitting in the dealership for 3 weeks now waiting for an engine replacement.

I was driving up to a border check point and slowed down at the guard shack. Once cleared I released the brake and tried to accelerate. The vehicle shut down completely. I tried to restart it and the check transmission warning came on. The vehicle would not restart. I was blocking the lane at the border check. After a few minutes I was able to start the vehicle and limp over to the shoulder of the freeway. There was no power and loud knocking and squealing from the engine compartment. Engine light came on and several other warning lights that I don't recall. I was in the desert with 3 dogs in an unsafe area for 7 hours until I could get help. Vehicle was towed to the dealership and is currently under diagnosis but so far code p0016 and metal pieces in the oil.

On October 23 I was driving my vehicle and the airbag light and a message service safety restraint appeared. On October 24 I was in route to take the vehicle to the dealership and as I was merging going to the highway the vehicle turned off, lost complete power threw itself into neutral. I had to drive it over to the shoulder to keep from getting hit. I was able to get the vehicle to turn back on and got it to the dealership. This would be the third time that the vehicle has lost power and completely turned off while driving the first time I took it to the dealership. They said they couldn’t find anything wrong. The second time this happened. I took it to the dealership. They said they replaced the gateway module this third time I took it to the dealership they have called me and said they need to replace the onstar telecommunication module. The vehicle is unsafe. It is a brand new 2024 Tahoe I purchased it new. The vehicle should not be turning off while I’m driving the same messages consistently pop up the airbag in the service safety restraint. They replaced some kind of console at the top and say that that would fix the issue, but it didn’t because the message came back on again the vehicle idols as if it’s gonna turn off whenever I go to stop the vehicle the transmission stutters are like it’s going into a downshift and it acts like he wants to turn off, but it doesn’t it’s only turned off when I’m driving and then it will just shut off.

2nd powertrain failure in 4 months in 2023 Tahoe with 6. 2l engine. The first being the camshaft and lifters failing at highway speeds, which was repaired. The second issue the engine seized while on a tollway going approx 70 mph with my spouse, children, and family in the vehicle. We were able to coast to the shoulder while waiting on a tow truck. Because of the engine being seized, the Tahoe is waiting on the engine to be replaced. While we wait, we were told they have no loaner vehicles and there are no gm rental vehicles available with who they contract through. Having a 2023 leased vehicle fail twice in 4 months with children in the vehicle is unacceptable and brings to question the safety and reliability of the vehicle moving foreward.

We have experienced a loss in power that is accompanied with an audible engine knocking sound. The loss of power affected our ability to safely merge into the highway.

On the morning of 1 oct, I had left the house here in cedartown GA to head to a meeting in atlanta with a customer. I had started the truck 15 minutes before departing just as we have always done to our vehicles over the years to allow them to warm up properly. I departed doyle rd onto hwy 27 south heading towards interstate 20. About 15 miles from the house I was at a steady cruise speed of 45 mph, no traffic, acceleration or deceleration and the stability control system light came on, one second later the engine light came on and the engine all of a sudden started making a loud grinding and clunking noise. I was on the inside lane so let the car pass next to me and started to pull over onto the shoulder of the road. I immediately shut off the truck, popped the hood and got out to inspect what might have happened. There was no smoke, I checked all the fluids and all were at the normal ranges. The engine oil was at its full mark as well. The oil was just changed a month early and still of the same color as it was new. After checking, I got back on the truck, attempted to start and it ran for a few seconds then I immediately shut it off after hearing again the loud noise. A polk county police officer stopped to check on me and offer assistance as well as some tow companies to call. Eventually after about at hour a tow truck showed, we tried to momentarily start the vehicle so it could be put in neutral but the engine had locked up. I’m glad I got off the road when I did, otherwise I feel I could have been driving and experienced that sudden lock up and loss of control which could have been a serious accident with log trucks up and down that highway all day long. This vehicle is my wife’s primary vehicle and always has been maintained to a t just like all of our gm vehicles have. My daughter just graduated and drives our passed down 2005 Tahoe with over 300k miles that we bought in 2006. This has never happened to us and I feel it is a serious safety issue on the 6. 2.

I was driving in traffic with 8 kids from my football team on a busy street and my truck start jerking and wouldn’t accelerate much. I was going 35 mph and the truck just slows down in the middle of driving. Then as I pulled over thick white smoke comes from the tail pipe. Thank god it was a Sunday and the busy street wasn’t as busy and I was able to pull over safely because this happen while I was driving. I got the truck to autozone and they gave me a misfire code in cylinder 1. I sent my truck to dealership and spoke with them on the phone and they was able to tell me everything going on with my truck without even having to tell them all the issues happening. They looked at the truck and said I had an internal engine issue. I was advised this a well known problem with my type of truck. I reached out to gm and asked them why haven’t it been a recall on my truck if this is a well known issue with my vehicle after talking with many mechanics. No answer was specifically provided. I’ve been trying to get them to do what’s right and repair the engine but I’m getting the run around. I’ve reached out to over 5 mechanics and a shops and have been told this is a well known problem was trying to see the cost. Once I found out this was well known it made me contact general motors. I don’t think it’s fair this is a known issue with 5. 3l engine and it hasn’t been a recall. It is unsafe to be driving and the engine just fails on you in the middle of traffic. What if I was on the freeway? my truck is at a gm dealership right now and gm and the dealership is refusing cost assistance on a well known engine failure problem. These vehicles need a recall on them that would of been 9 lives at risk because this problem hasn’t been addressed by the manufacturer it was scary when it happen because I was on a busy street.

See all problems of the 2020 Chevrolet Tahoe 🔎.

The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving at 70 mph, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The message “service electronic stability control" was displayed, and the traction control warning light and the check engine warning light were illuminated. The failure persisted while driving, and the vehicle failed to exceed 50 mph. The vehicle was taken to an independent mechanic who diagnosed that the lifters had failed, the camshaft had failed, and there was a misfire in cylinder #5. The vehicle was not repaired. The vehicle was towed to the residence and had not been driven since. The manufacturer was not notified of the failure. The failure mileage was approximately 143,000.

The engine in my vehicle has experiences major failures in valve flap adjusters, multiple valve failures, valve cover issues, and over consumption of oil by over a quarter in a week and a half of average driving. My safety was put at risk because the engine failure resulted in traction control malfunctions while going 70 mph up hill on a major interstate. This led to extreme shaking which did not stop until slowing down to below 15 mph. Luckily I was a mile from an exit and was able to coast off the road quickly; it was decent enough weather, and I was less than 5 miles from my destination so I could creep between 15-30 mph to not exacerbate traction control alarms. That slow mph did back up traffic behind me. As far as I am aware the problem was likely reproduced by the dealership service tech, which led to their recommendation to replace the whole engine. They do not consider it to be covered by any warranty anymore. The engine may be in their possession still, but I am unsure. There were zero warning lights/prompts from the vehicle that anything was going wrong prior to the shaking and loss of traction control at high speed. The dealer service team suggested that my high miles led to the engine failure. I do highway driving with it and have followed all manufacturer recommendations for oil changes, and even more frequent changes with oem oil since about 80k miles. I do not think this engine should have failed at this amount of mileage. I made note of oil consumption around 95k miles and measured oil loss regularly. It was a little less than a quart every 2k to 3k miles which manufacturer states is within spec so I would top off oil. A year ago it had a tcm wire replaced after burning in half. 3 weeks ago I also had to replace the entire turbo. The wire rendered my car unable to go in gear. The turbo failure put me into limp mode. I think the turbo failure was a sign of a deeper issue that went undiagnosed.

Low oil life notification on phone. Since l87 recall, an oil consumption test was stopped and the new type of oil has been added to the vehicle 5k miles ago. Had to add a full quart to register on dip stick. Will now start another oil consumption test with a dealership. I am very concerned about my families safety.

I got my oil changed and got a new air filter and my Tahoe started acting like it was chugging put it on a machine said it was a spark in 7 cylinder got new plugs and wires and a new thermostat didnt fix it got a nee crank shaft was driving perfectly went to pass a driving doing 35 m an hr on a 55 m hr and when I did it acted like it was going to die I took it easy the two mikes home had it towed to dealership they said it was my lifter and would codt my 16000$ to fix it! I talked to 3 other mechanics and they informed me this particular engine has a recall for doing just this when it runs at 5. 4 and swittchrs to 8 it sometimes blows a lifters , which is exactly what has happened if I hadnt been any cliser to home or was on the interstate this could of neen a really bad accident!.

See all problems of the 2015 Chevrolet Tahoe 🔎.

Driving car, suddenly when accelerating engine light started flashing, car was shaking and making knocking noise.

We just recently had the cam shaft and lifters replaced, as the vehicle began experiencing a knocking sound. The repair was supposedly completed, and they gave the truck back. We took the truck back in within a week, bc we continued to hear the sound. They sent it back saying they didn’t hear anything after test driving it. Over the weekend the car shut off after beginning to shake uncontrollably. Now supposedly the camshaft bearing is gone, and the truck experience engine failure. I spoke with someone previously, as the issue being repaired hundred thousands of cars were recalled for the same issue. I was told that it wasn’t on the same line, even though my truck was experiencing the exact issue and fell under the years. We were placed back on the road with our family, with a vehicle.

The contact owns a 2022 Chevrolet Tahoe. The contact stated that while having a routine oil change at a local dealer, the contact was informed that the engine was blown. No warning light was illuminated. In addition, upon further notice, the contact's husband heard an abnormal clicking sound coming from under the hood. The vehicle was diagnosed, and determined that the engine needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was made aware of the failure. The failure mileage was approximately 84,000.

See all problems of the 2022 Chevrolet Tahoe 🔎.

I drive a 2021 Chevrolet Tahoe. This occurrence has happened on three separate occasions and each time it was raining outside. The first occurrence, my vehicle was running and parked in the rain after driving approximately 5 miles. While parked my check engine light came on with a series of warnings: service ecs, service traction control, forward collision system unavailable, reduced acceleration drive with care. Two days later it went away. The second occurrence, I was driving in the rain for approximately 22 miles and briefly parked with my vehicle running. I then turned out of a parking lot and began to accelerate to speed up and the check engine light came on along with all the same messages, this time my vehicle acceleration had seized and wouldn’t go faster than 30 mph. I slowly drove back to the parking lot and turned the vehicle off to let it sit, disconnected the battery and reconnected, and the issues went away. The third occurrence, I was driving on the highway in the rain for approximately 10 miles, I went to merge into a right hand lane, I took my foot off the acceleration peddle to slow down for the merge and as I slightly turned the wheel to the right, my vehicle spun out three times, throwing the back end of the Tahoe into the inner highway wall, which spun me again to face the right direction, next to a highway exit. I then went to accelerate to exit the highway but noticed my vehicle would only coast and realized my engine had cut out at some point. I started the vehicle and exited the highway and parked in a parking lot only feet away from the exit. After I parked I noticed all the same warning lights came back on. Each occurrence happened on [xxx], [xxx], [xxx]. My vehicle was towed to gunn GMC collision center in selma, TX and will be looked at on September 3, 2025 around 8:00am. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

2021 to 2024 has had countless problems with the 6. 2l engine. General motors has put a stop of sale on vehicles with this engine. When I purchased the car the wrong oil was in the car which always burned off with 2 months after an oil change. They figured out the right oil but the damage has already been done.

Alignment and suspend has vehicle shaking,rumbling and shifts all over when hitting a bump in road. J. B. A. Chevrolet had detected alignment/suspension problem. Had check engine light come on but carmax claimed it was a history code. The transmission had to be replaced. Still experiencing multiple problems with said vehicle.

See all problems of the 2019 Chevrolet Tahoe 🔎.

On [xxx] we bought our 2023 Tahoe high country from jeff gordon cheverolet in wilmington nc. In April 2025 a recall was announced on our car for engine failure. In June of 2025 we received a letter stating that a fix for the recall was to have an inspection done. If passed, then an oil change and new cap would be done. This was completed. On [xxx], I was on the highway accelerating to get up the speed, when I heard a loud pop noise. Then I heard loud knocking coming from my engine, the check engine light came on with the traction light as well. The car then had sluggish acceleration and would not accelerate but would have high than normal rpms and rev when trying to accelerate. I knew then that I had engine failure. I was able to get the car to a safe place and called the dealership right away. They got it towed to marine chevy since it was closer. The next day they did an inspection on the vehicle and said the camshaft and lifters were broken and had to be replaced. I said I would need a new engine replaced due to the damage and recall. I was told it would not be under recall because it was the top and not bottom. They said the gm refused the new engine but would not tell me if it was the general manager or general motors that refused. I called and texted multiple times asking for pictures. They refused to send me any until 9/9 after multiple attempts. They only sent me one of the rods and rocker arms showing a rod bent and stated it was the lifters. Still no pictures of the camshaft broke or lifters. These problems already have multiple class action lawsuits out for this particular engine failure. I was told the recall would still be on the engine even after the repair, I can still have engine failure. I refuse to pay the money for this car to continue to be in the shop due to a bad engine that was put in these models. I also have a case open with general motors for replacing the engine as well and they are refusing to help. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552.

The contact owns a 2019 Chevrolet Tahoe. The contact stated that the vehicle was consuming an excessive amount of engine oil. While driving at 30 mph, the vehicle stalled consistently while shifting gears. There were no warning lights illuminated. Upon investigation, the contact linked the failure to NHTSA campaign number: 25v274000 (engine and engine cooling); however, the VIN was not included in the recall. The vehicle was taken to three independent mechanic,s who indicated that the failure was related to the engine. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 120,000.

At a stoplight vehicle wanted to stall out motor was shaking.

When driving the car just stops losing power then the car immediately shuts down and stops driving. I had to call a tow truck when it’s taken to the dealership the fuel pump power control module is faulty. This is a 2021 Tahoe they had to replace the fuel pump, power control module, and this vehicle should not have to be replaced. Chevrolet/GMC knows that these modules will make the vehicle stop wherever it is driving. I happen to be on a freeway going 70 mph and could have been killed. They have not put a recall out to have these modules replaced in any SUV. This is a danger for any driver on the road. This is a lawsuit waiting to happen for people. You know that they are aware this is happening because they paid for the tow and replaced this part that is not warranty now for free. Yes, great that it was paid for but thankful I did not lose my life as I could’ve been rear ended when my car shut down going that fast in the middle of the freeway I am begging that they please put a recall so no one gets injured or killed.

I am writing to formally document serious engine defects I have experienced with my 2021 Chevrolet Tahoe equipped with the 5. 3l l84 v8 engine. 1. Crankshaft failure omy Tahoe suffered a catastrophic crankshaft failure that required major repair/replacement. Oi am aware that gm has recalled certain vehicles equipped with the 6. 2l l87 engine for crankshaft and rod-bearing defects. Obased on my experience, the same or a very similar defect has also occurred in my 5. 3l engine, which is currently not included in that recall. 2. Valve lifter failure oin addition, my vehicle has suffered from valve lifter collapse—a well-documented problem in 2021–2022 gm trucks and suvs with both the 5. 3l and 6. 2l engines. Othis caused severe misfiring, drivability issues, and expensive repair needs. Why this is a concern: •both failures occurred well before what would be expected of a modern engine. •the crankshaft failure raises a safety risk: sudden loss of propulsion while driving could lead to accidents. •the lifter issue is widely reported by other owners and has been the subject of gm service bulletins. •taken together, these problems suggest systemic defects in the 2021 Tahoe’s 5. 3l engine that have not been adequately addressed by gm. Requested action: •I ask gm to extend recall and warranty coverage to include the 5. 3l l84 engine in addition to the 6. 2l l87. •I ask NHTSA to consider investigating whether the scope of the current 6. 2l recall should be broadened to include 5. 3l engines, given failures like mine. •at minimum, I request assistance in covering repair/replacement costs for both the crankshaft and lifter defects, which are clearly not due to normal wear and tear. Vehicle details: •year/make/model: 2021 Chevrolet Tahoe •engine: 5. 3l v8 l84.

The contact owns a 2021 Chevrolet Tahoe. While driving 25 mph, the vehicle stalled in the street. The vehicle was eventually restarted and was driven to the family’s residence. After arriving at the residence, the vehicle failed to restart. The contact stated that the failure was like the failure in NHTSA campaign number 25v274000 (engine and engine cooling). There were no warning lights illuminated. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA hotline for assistance. The approximate failure mileage was 73,000.

To whom it may concern, I am writing to formally report serious defects with my 2021 Chevrolet Tahoe (VIN: [xxx] ) and to request assistance with repair costs. Approximately six months after purchase, when the vehicle had about 22,000 miles (I bought it used with around 19,000 miles), the battery and electrical system failed. I brought it to the dealer and was told there was no issue; they only performed a jump start. Two days later, the vehicle broke down in the middle of the road. I had to pay for a tow truck and replace the battery completely out of pocket. More recently, at about 92,000 miles, the vehicle developed severe engine problems. A certified mechanic diagnosed collapsed afm lifters and camshaft damage. The repair requires oem gm parts and costs approximately $4,500. This issue is widely reported by other gm owners with 5. 3l afm engines and is known to be a manufacturing defect, not a maintenance problem. Please note that my Tahoe has been well maintained, with oil changes always performed on time and using the correct oil and service intervals recommended by gm. Despite this, the vehicle has experienced repeated and costly failures that create unsafe driving conditions. I kindly request that gm review my case and provide assistance with covering the repair costs or reimbursement, given that these issues are the result of known defects and not owner neglect. I look forward to your prompt response. Sincerely, [xxx] [xxx] 33032 [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Loss of power.

While driving on the expressway I heard a rattling noise coming from my undercarriage, by the time I got off my exit the sound got louder, I attempted to make it home and when I pulled in my driveway, and popped the hood, fluid starting pouring out the bottom as well as splashed on other components. Upon further inspection it was determined that the fluid was coolant. There was no dashboards lights or warning signs indicating that something was wrong or that my car was at risk of overheating. I had the vehicle towed to an auto repair shop and the following was diagnosed and repaired: •water pump •cooling system •engine water pump •engine coolant thermostat housing assembly. •serpentine belt.

The contact owns a 2021 Chevrolet Tahoe. The contact stated that while his wife was attempting to start the vehicle, the engine failed to turn over as intended. No warning light was illuminated. Upon further inspection, the contact stated that there was an abnormal sound coming from the vehicle. The contact used an obd-2 diagnostic scanner and retrieved dtc: p129f and u18a2. The vehicle was towed to a local dealer, where it remained for further investigation. The contact related the failure to an unknown recall; however, the VIN was not under recall. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline for assistance. The failure mileage was approximately 82,000.