Chevrolet Suburban Complaints (2021)

185 consumer complaints on file.

#11686529September 11, 2025
ENGINE
While driving along on a city street, the check engine light came on. Once I turned onto the highway, there was a pop from the engine, and the vehicle started missing and vibrating. I turned around and drove the vehicle back home. A mechanic looked at it and said there were a lot of problems and recalls on these vehicles for misfiring. He said the problem is the lifters and they need to be replaced as soon as possible. He encouraged me not to drive it due to it may cause more damage.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11685179September 4, 2025
FUEL/PROPULSION SYSTEM, ENGINE
Engine light comes on and now flashes. The service traction control and esc comes on. The whole vehicle shakes when idling. Certified GM dealer hooked it up and it says misfiring cylinder 6. All spark plugs replaced, new GM coil, new spark plug wires. Nothing has fixed it yet.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11684390September 2, 2025
ENGINE, FORWARD COLLISION AVOIDANCE: WARNINGS, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
I was driving when I received messages saying service ESC, Forward collision System Unavailable, & Service Traction Control. The vehicle began to shake hard when I applied brakes, had loss of power when pressing the gas pedal, and sounded like metal grinding. All of this put my children & I at risk as we were on interstate 35 with cars flying past us and I’m losing power. Initially the spark plugs and coil was were changed to no repair. It was towed to a dealership where they confirmed the lifter & cam failed which put metal in the oil. My only option is a full engine replacement costing 20k on a vehicle that’s 4yrs old. It’s not ok that I have to spend that in order to get my 70k car drivable. Im now without a car, still paying a car note, unable to get my kids places, and having to get help from friends all bc GM can’t build a quality vehicle. I also haven’t been able to get a loaner car. This isn’t happening in only the 6.3L. This is a widely known issue with the 5.3L as well. *There were ZERO warning signs that something was wrong. Drive just fine that morning*
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11684184August 31, 2025
FUEL/PROPULSION SYSTEM
Driving vehicle on a highway at 55mph, tried to speed up, no propulsion. Fuel injector went bad.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11683089August 26, 2025
FUEL/PROPULSION SYSTEM
I was standing at a red light with my foot on the brake and the car went into neutral and stalled. I could not restart the vehicle and had to be towed to the dealership where there confirmed a fuel pump module failure. There were no precipitating factors or warnings. This is extremely dangerous. The car is only 4 years old and many people have reported the same incident online, which often recurs, even after replacing the fuel pump. The dealership has ordered the part however it is on backorder without any estimated ship time. For a vehicle I paid over $70K for, this is concerning and frustrating. There is a known recall for 2021 Suburbans for this exact issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11680583August 14, 2025
ENGINE
My suburban is 4 years old and needs a new engine. The dealership is seeing a lot of 21's with the same issue. Bank 1 and 2 have failed, both powerods are broken and the cans and lifters have failed. There were no prior warning. We were driving and 2 warnings popped up and we took it to a dealership. We then went to a private repair shop for second opinion. The warranty is 70k miles and my car is 72k miles. This should not be happening with a 4 year old. The other Suburban engine has been recalled but mine has no current recalls on it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11680575August 14, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2021 Chevrolet Suburban. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that while driving at various speeds, an abnormal sound was coming from underneath the hood. The check engine warning light was illuminated. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 130,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11679338August 8, 2025
ENGINE
Was driving about 45 mph on 2 lane road. All of a sudden, without warning we lost power (had no propulsion). Luckily there was a residential side street that we were able to turn onto and get off of the highway with no shoulder. We coasted to the side of the street and called a tow truck. Had we not been able to get off the road, we would have been dead in the road, blocking an entire lane of a busy 2 lane highway without a shoulder to pull off on. There was no warning prior to incident but a message did appear during the incident. I believe it said "Loss of propulsion." We turned off the vehicle, then tried to restart it. Engine attempted to restart, but it made a horrible noise & wouldn't restart. Still had battery power. Vehicle was towed to a local dealership where it is currently being evaluated. We know of a massive recall on the 6.2 l engines. Ours is a 5.3 l engine. So far I'm seeing many people having problems but no official recall for the 5.3 l engines that are having THE SAME issue as the massively recalled 6.2 engines. This needs to be looked at. Our Vehicle only had less than 30k miles on it. We bought it new and have done routine maintenance.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676647July 28, 2025
ELECTRICAL SYSTEM
After a major HVAC repair involving the evaporator core (performed at a Chevrolet dealership), my vehicle began experiencing serious electrical issues. The second-row 12V outlet no longer functions, and the vehicle has gone completely dead three times while the engine was off due to the auto stop/start system — once while stationary on a major highway, creating a dangerous situation. Each time, the engine failed to restart automatically, and the entire electrical system became unresponsive.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676433July 27, 2025
ENGINE
On 7/26/2025 approximately 8:30pm (PDT), driving south on CA I-880 in third lane from right traveling at approximately 50mph when vehicle engine died and went into neutral gear. Dashboard alert indicated to press start engine button, but would not start. Managed to maneuver vehicle to right shoulder amid rush hour traffic. Fortunately, a CA Highway Patrol officer saw us and was able to render assistance. Vehicle would not restart or go into neutral after several attempts to restart engine. Special tow vehicle was called to give us a tow home. This incident happened after we received a Chevrolet recall notice back in May or June about the engine and did take the vehicle in for service on 6/10/2025. The dealership service recommended using higher weight oil and it would help mitigate any potential issue. Obviously, this was not the case. We were very fortunate to avoid any serious injury or damage on the highway due to engine failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11675698July 23, 2025
FUEL SYSTEM, GASOLINE
The contact owns a 2021 Chevrolet Suburban. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where the map sensor was replaced; however, the failure persisted. Additionally, the vehicle failed to start. The vehicle was towed to another mechanic, where it was diagnosed and determined that the fuel pump sensor module had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in a recall. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 62,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11674084July 16, 2025
SERVICE BRAKES
My wife was driving the vehicle and was pulling into a parking lot. The brakes failed and would not stop the vehicle. She pressed on the brakes very hard, multiple times, for several seconds, before the vehicle finally came to stop. She then proceeded into a parking spot where the brakes again failed to stop the vehicle promptly. Several lights illuminated and a “System Brake Failure 43 MPH Top Speed” message appeared, alternating with several other messages appearing. The vehicle is in for service at Classic Chevrolet in Granbury, Texas. They are telling me that they reset the codes and that the codes are not returning. I am extremely concerned that if I pick up the vehicle at this point, the brakes could fail again and cause an accident with serious injury.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673837July 15, 2025
UNKNOWN OR OTHER
There is an issue with the transmission when i accelerate at a slow pace. The car shakes and vibrates. Theres a possibility of an issue with the transfer case 4x4. When i turn the steering wheel and drive, it feels like it locks. It feels like 4x4 is on and theres a odd sound as well. I took my car to Hamilton Chevrolet and paid for inspection. They told me that there was no issue, but the issues i mentioned earlier in this message was mentioned to them. Those issues are still occurring. This is a recall issue but when i put my VIN number in, my car shows that there is no recall on it. There was many people who mentioned this problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11671818July 7, 2025
POWER TRAIN
Engine is skipping when in reverse.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11671798July 7, 2025
ENGINE
Vehicle lost power, debris in cylinder from internal damage, crank case leaking air, oil leaking into cylinder, P0300, P0308, and P050D
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669413June 26, 2025
FUEL/PROPULSION SYSTEM
What component or system failed or malfunctioned, and is it available for inspection upon request? Fuel pump How was your safety or the safety of others put at risk? Yes, vehicle stopped unexpectedly and and wasn’t accelerating Has the problem been reproduced or confirmed by a dealer or independent service center?no Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear?no
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11667883June 19, 2025
POWER TRAIN
The vehicle started rumbling/vibrating/shaking when getting up to speed and at a consistent speed. Brought to an independent service center and was old that the torque converter is failing. No warning lamps or other problems prior to rumbling/vibrating that started on 5/22/25.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11665856June 9, 2025
ENGINE AND ENGINE COOLING, ENGINE
The contact owns a 2021 Chevrolet Suburban. The contact stated that the vehicle was listed under the application TURO. The contact stated that a person rented the vehicle and informed him there was an abnormal sound coming from the engine. The contact test drove the vehicle, and while driving 30 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The check engine warning light illuminated, and the contact heard an abnormal sound coming from the engine. The vehicle was towed to an independent mechanic, who diagnosed the vehicle and determined that the lifters, push rods, and two valves, and cylinder 6 had failed and needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the independent mechanic; however, no cause for the failure was found. The independent mechanic stated that the vehicle was consuming an excessive amount of oil and in cylinder #1, the lifters had failed. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the independent mechanic and was diagnosed with oil intrusion into the bank covers and piston damages. The vehicle was repaired for the most recent failure. The manufacturer was not contacted. The failure mileage was approximately 107,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11664757June 4, 2025
ENGINE
What component or system failed or malfunctioned, and is it available for inspection upon request? -My engine started to make a loud ticking and knocking noise. I brought it into Good Chevrolet in Renton WA 6/3/25 where they told me there is an “internal engine failure due to failure of the lifters.” When I asked the dealership for the repair estimate so I could possibly have a second opinion, they said they were “not comfortable giving their information and the problem in writing.” They refuse to give us any documentation but were insistent that even though NHTSA has issued a mass recall for this exact same issue on the larger engine in my same year of vehicle, “it’s unrelated.” How was your safety or the safety of others put at risk? -The engine is failing and had we not brought it in for diagnosis, I could have had full engine failure while driving with my children and been in a catastrophic crash. Has the problem been reproduced or confirmed by a dealer or independent service center? -Yes the problem can be reproduced and has been confirmed by Good Chevrolet. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? -Good Chevrolet inspected the engine but refuse to give us documentation though they had us file a claim with GM (I will attach the claim email) Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? -I noticed a small noise after I had fans replaced in September but the noise gradually increased so it was brought in for diagnostics. There were no warning lamps or messages.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662355May 21, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2021 Chevrolet Suburban. The contact stated that while his wife was driving at undisclosed speeds, there was an abnormally loud banging sound coming from the engine compartment. The contact stated that the failure was related to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed and determined that the rods were bent, and the lifters needed to be replaced. The vehicle was repaired. The manufacturer was not contacted. The contact called the warranty company, who confirmed there was no repair coverage on the vehicle for the failure. The failure mileage was approximately 109,069.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to Chevrolet Suburban