2021 Chevrolet Silverado 2500 complaints

While stopped at a traffic light the transmission shifted out of drive without movement of the shift lever. Repeated attempts to reengage the transmission to drive by shifting into park and then drive was not successful. Reverse was not affected. Vehicle mileage is 57,700. No previous issues with the transmission. Truck was towed to the dealership for investigation and repair.

The transmission has a defect. While towing 8,000lb trailer going up a small grade, the truck shuddered then immediately downshifted violently, causing the truck to skid and almost jack-knifing the truck and trailer. . The dealership has confirmed the issue as a valve body failure in the transmission. The dealership has the vehicle for diagnosis and repair. No codes or warnings were displayed at the time of the incident. The dealership updated the software which produced a powertrain failure code, the valve body failed.

The contact owns a 2021 Chevrolet Silverado 2500. The contact stated that while the vehicle was parked, the tailgate opened unintendedly. There were no warning lights illuminated. The contact stated that the failure was related to NHTSA Campaign Number: 24V060000 (Latches/Locks/ Linkages) however, the VIN was not included. The vehicle was taken to the local dealer, who informed the contact that the VIN was not under recall. The vehicle was not diagnosed or repaired. The manufacturer was contacted and informed the contact that there was no recall coverage on the vehicle; however, the repair could be paid for out-of-pocket, and reimbursement sought afterward. The failure mileage was approximately 27,000.

The contact owns a 2021 Chevrolet Silverado 2500. The contact stated that while driving approximately 10 MPH, the electronic tailgate door erroneously unlatched and continued to open and close. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in NHTSA Campaign Number: 24V060000 (Latches/Locks/Linkages). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 32,200.

Tailgate automatically opens and closes on its own.

Tailgate opening and closing on its own. No input from key FOB, switch on tailgate, or switch inside of cab. No fuse indicated to pull to stop.

The contact owns a 2021 Chevrolet Silverado 2500. The contact stated while driving at an undisclosed speed, the tailgate unlatched and caused the tools to fall out of the vehicle. The tailgate warning light was illuminated. The contact stated that occasionally while attempting to close the tailgate, the tailgate failed to close and latch securely. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact related the failure to NHTSA Campaign Number: 24V060000 (Latches/Locks/Linkages). The dealer was made aware of the failure and confirmed that the VIN was not included in the recall. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was unavailable.

Goodyear Wranger At Trailrunner 275 65R20. I was heading home with my 14 year old daughter Sunday night. When I was merging on the on ramp to the highway and I felt a vibration. So I was in the process of slowing down and boom. My truck went broadside in the highway. I gathered it up and got all together. I don’t have a single dash light on or anything. The tire was still holding air. A matter of fact it still is. But when the tread came off it destroyed my bedside and bumper. My truck only has 32,473 miles on it. The tires are rated for 55,000. I just want something to happen to the manufacturer. If that would’ve happened to the right front it would’ve been bad. Or if it happened to a mom and kids. This is not good.

Windshield wipers stopped working on 4/23/24 while driving in the rain.

Tailgate. Yes it can be inspected. It opens and closes randomly , I was going on to the freeway for work when I suddenly received a notice that the tailgate was opening. when I pulled over the gate was open and all the contents were at the end of the truck bed, power saws and equipment almost flew out into traffic! I then called the dealer who told me there was a recall and to bring it in, so I did and when I pulled in the service department the tailgate opened upon entering service area. After about 20 minutes he tells me that mine is not covered. Warranty ran out! And not on that Vin#. The tailgate now opens and closes randomly at all different times.Try to close and it just keeps opening and closing.Have to go out and close manually.

Tale gate opens and closes by itself. Keeps saying tale gate is open but is closed

Tailgate is opening and closing and opening and closing all on its own. This is safety hazard when towing or cargo could fall out onto the highway.

The contact owns a 2021 Chevrolet Silverado 2500. The contact stated while driving at various speeds, the vehicle downshifted from 8th to 7th gear or from 8th to 6th gear, and the wheels locked up, causing the contact to lose control of the vehicle. There was no warning light illuminated. The contact was able to regain control of the vehicle and continued driving. The contact stated that the failure recurred several times while driving. The contact stated that the safety risk was more severe while towing a trailer because the failure caused the trailer to fishtail while driving. The contact stated that he had pulled to the side of the road on one occasion. The vehicle was taken to the dealer but was not diagnosed or repaired. The contact related the failure to TSB Number: 21-NA-275. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 94,000.

Factory LED headlamp was flashing rapidly like a strobe light intermittently before it failed. The lights are bright enought that it was not immediately obvious to me (the driver) that anything was amiss. Was noticeable when close to other vehicles in traffic and on open, dark roads, where the strobing affect as apparent on reflective signs. The unit later failed completely and is now backordered and so unavailable to replace. I'm forced to drive with no headlight. The unit was faulty and suffered from water intrusion, which was determined to be the cause of the failure by the dealership. The failure occurred less than three years after the vehicle was placed into service, though it could not be taken in for service until a week after warranty expired. It is not covered by any warranty, though headlights are typically a wear item and expected to be readily replaceable. Dealer-quote cost to repair is $2,300, making the repair to be likely inaccessible to many owners. I have a video of the offensive behavior.

The transmission fluid line that goes from the radiator to the cooler came apart at the crimp were the rubber and metal tube connect, this allowed all the transmission fluid to spray all over the motor while driving and leaving us stranded.

While driving down the road at 40mph the crimp connection for the transmission cooling line came apart and spilled all my transmission fluid out the power hose and left me stranded in the middle of the road.

Having issues with “Service Trailer Brake System “ , this should be a safety concern for GM , and not up to the customer to pay for this repair.

It's a known issue that 2020 and 2021 Chevy Silverados have a malfunction in the tailgate where it automatically opens while driving, opening the driver-side door, or even locking and unlocking the vehicle.

The contact owns a 2021 Chevrolet Silverado 2500. The contact stated while driving uphill at an undisclosed speed with a trailer hitched to the vehicle, the vehicle downshifted inadvertently, which caused the trailer to fishtail. The contact stated that he lost control of the vehicle, and he was able to slowly regain control of the vehicle. The contact stated that the failure had been recurring while driving. The vehicle was taken to an unknown dealer, where the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 110,000. The VIN was not available.

2021, Chevrolet Silverado 2500 HD, Crew-Cab, 6.6L Gas Engine. At @ 25k miles, the "Service 4WD" light came on dash. It later started a grinding noise/sound within the front axle transfer case. Was told they had a problem with moisture intrusion into the transfer case and it would cause corrosion to sensor. Truck was taken to dealership and in shop for @ 1 week or so. After repair was completed, less than 3k miles later, it happened again. Same problem ("Service 4WD"), same noises, same diagnoses. Truck was taken back to the dealership. This time, repairs were more extensive and the wiring harness was replaced. I was traveling with work yesterday (34,458 miles on truck now) and the "Service 4WD" light came on again. I've contacted the dealership to schedule a time at the end of week or early Saturday to take the truck back again. While reviewing other complaints, I noticed a similar problem where the customer indicated the "Service Tow System" light was coming on. It too was allegedly caused from moisture intrusion. I'm currently over 3 hours from home through the end of the week. I'm hoping the truck will make it home without creating a catastrophe on the Interstate between here and there.

The contact owns a 2021 Chevrolet Silverado 2500. The contact stated while driving at various speeds and depressing the brake pedal, there was an abnormal squeaking sound coming from the rear of the vehicle. The dealer was not notified of the failure and informed the contact that the brakes needed to be replaced. The vehicle was not diagnosed nor repaired. The vehicle was taken to an independent mechanic, where it was diagnosed with brake pulsation, and a rear brake bolt was loosened. The mechanic tightened the bolt. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 15,000.

JULY 2022 DPF filter was throwing check engine light. Took to dealer to get diagnosed, part was ordered and the DPF was replaced August 19th 2022. Started to get headaches in vehicle while driving it. OCT 9th ended up in hospital after driving vehicle and was diagnosed with CARBON MONOXIDE POISONING. Experienced symptoms of losing consciousness, worst headache I've ever had, nausea for 5 hours, loss of feeling in body and seizing of body. Took truck to dealer to get inspected twice and nothing was found to be wrong with it. NOV 10th Took truck on another road trip and was having similar symptoms as before however had more chest pain this time so went back to hospital. Took truck back to dealer to have inspected again and was told that it was fine. Nov 18th took truck on another road trip and within 20 mins of driving had another horrible headache. Pulled over and needed to get air and ended up driving truck 4 hours home with windows and sunroof open to avoid getting carbon monoxide poisoning again. I have been ill since August and that is due to diesel and carbon monoxide poisoning every single time I drive the vehicle which is daily. The truck has been now at the dealership for 70 days without any update or improvement in the case.

The “Service Trailer Brake System” warning will not stop popping up and beeping

Service steering column lock continually appears on my screen. Front collision detectors are also going off for no reason.

The brakes have squealed since the day we purchased it new. The noise is usually at low speed, under 10 MPH. The dealer has told me that they could replace the pads but I would have to cover the cost.

The trucks brakes squeal very badly and won’t go away there are complaints all over the internet for this and when I contacted Chevy they said there isn’t anything they can do.

Very bad brake squeal while applying brakes at 10pm or less, coming to a stop. This started to happen when the vehicle had approximately 5,500 miles.

DEF Tank Heater Vehicle goes into a limp mode after a defined mileage. Dealer confirmed the tank heater is bad. The part is on backorder with no known production date.

Starting smelling gas inside of the cab, at first thought it was non-issue, but the smell persisted. Several days passed, and when I went to warm up my truck in the morning smelled a strong gas odor, and when I looked under the engine - there was a pool of gas, and gas was leaking. Took it in to the dealership (thinking it was a simple loose filter line) but they now say that it is more than that. Not sure if this has been a re-occurring issue with these new trucks, but it could have been a very dangerous situation.

Non stopbbreak noise. No matter what you do, what is or isn't added, how clean they are, they constantly squeak and loud! Dealers won't help. Tell you to get on the brakes hard. That helps for a few minutes! Over 50k fix the brakes!!!

My fiance started the truck. Drove about 2 miles from my mothers house, the check engine light came on. The traction control light came on and then she informed me that it felt like all braking power was lost. Truck is being towed to dealership. Could have killed or badly injured someone.

While in a McDonalds drive through Truck lost all braking ability. Pedal went right to the floor. Truck had to be put in park to stop and shut down. After re starting engine brakes started functioning again. Very scary incident.

Brakes: the brakes do not stop the vehicle without excessive pressure to the pedal. Especially carrying a trailer with the exhaust brake & trailer brakes in effect. Takes excessive distance for vehicle to stop. Pedal must be pressed 3/4 to the floor for it to start to apply brakes. It is extremely difficult to stop this vehicle at any speed over 45mph. Have not taken to dealer, was expecting a recall but none until now. Steering: when I turn the steering wheel at low speeds such as backing into a parking spot, there’s a loud squealing noise coming from the engine bay.

Front Park Assist (FPA) system did not provide any level of advanced alert until after impact when all conditions were fully met as stated in the user's manual for the Park Assist system. NOTE: Text after bullets are extracts from user's manual while test in () are owner's feedback during incident when FPA failed to alert. •as the vehicle moves at speeds of less than 8 km/h (5 mph) ( the vehicle was going 1-2 MPH) •the sensors on the bumpers may detect objects up to 1.2 m (4 ft) in front (Front Park Assist (FPA) detection was not until pipe contact was made with bumper/sensor) •within a zone 25 cm (10 in) high off the ground and below bumper level. (Pipe was in full zone from 0 to >30" high) •Blocked sensors will not detect objects and can also cause false detections. Keep the sensors clean of mud, dirt, snow, ice, and slush; and clean sensors after a car wash in freezing temperatures. (The sensor was not blocked in anyway. The truck has never been in mud, dirt, snow, ice, or slush.) •When an object is first detected in the rear, one beep will be heard from the rear, or both sides of the Safety Alert Seat will pulse two times. (Initial FPA alert level was never reported) •(There was not an intermediate level description in the user's manual as implemented by GM. Intermediate FPA "yellow" alert was never reported) •or <0.3 m (1 ft) in the vehicle front — a continuous beep will sound (Continuous beep from FPA was reported only after contact was made with the pipe) •The Park Ass

The contact owned a 2021 Chevrolet Silverado 2500. The contact stated while driving 35 mph, the contact noticed flames coming from the cab and the bed of the vehicle. The contact stated that the flames grew bigger and the contact pulled over to the side of the road and exited the vehicle before the vehicle became fully engulfed in flames. A report was made with the fire department. There were no injuries. Medical attention was sought for mental and emotional purposes related to the incident. The vehicle was deemed a total loss. The dealer was contacted and informed the contact that the Vin was not under recall. The manufacturer was made aware of the failure and a case was filed. The approximate failure mileage was 12,000.

AFTER TWO WEEKS OF OWNERSHIP, THE REAR CAMERA HAS STOPPED WORKING. INSTEAD, I RECEIVE AN ERROR MESSAGE. THERE ARE NO SHORTAGE OF COMPLAINTS LIKE THIS ON VARIOUS MODEL CHEVROLET FORUMS. MOST 2020/2021 CUSTOMERS INDICATING THERE HAS NOT BEEN RESOLUTION OR SPECIFIC ISSUE IDENTIFIED.

MY TRUCK WILL NOT START RANDOMLY. THE TRUCK WILL CRANK BUT WON'T FIRE. IF I WAIT A WHILE IT WILL EVENTUALLY START. I TOOK IT TO THE DEALER AND WAS TOLD THAT THEY COULD NOT RECREATE IT. NO CHECK ENGINE LIGHT ON AND NO ERROR CODES NOTED.

I'M HAVING A SEVERE PROBLEMS WITH THE EXTREMELY LARGE SIDE MIRRORS CAUSING A BLIND SPOT WITH CROSSING TRAFFIC. I BELIEVE I'M A VERY CAREFUL DRIVER TO AVOID ACCIDENTS, SO A COUPLE DAYS AFTER PURCHASING THE VEHICLE, I CAME TO AN INTERSECTION AND STOPPED TO MAKE SURE THERE WAS NO CROSSING TRAFFIC BEFORE DRIVING THROUGH. AS I BEGAN TO GO THROUGH THE INTERSECTION, I NEARLY PULLED OUT IN FRONT OF A CROSSING VEHICLE, A VEHICLE THAT WAS NO WHERE IN VIEW WHEN I STARTED TO GO THROUGH THE INTERSECTION. I WAS THINKING TO MYSELF WHERE DID THAT VEHICLE COME FROM? A FEW DAYS LATER I NEARLY DID THE SAME THING AGAIN, AND I REALIZED I WASN'T DOING ANYTHING WRONG, THAT IT WAS THAT HUGE SIDE MIRROR CREATING SUCH A HUGE BLOND SPOT THAT WHEN THE CROSSING VEHICLE IS AT A CERTAIN POINT THE MIRROR TOTALLY BLOCKS THE VIEW OF THAT VEHICLE. I AM REALLY WORRIED ABOUT HAVING AN ACCIDENT BECAUSE OF THIS LARGE MIRROR. I'M CONSIDERING GOING BACK TO THE DEALERSHIP TO SEE IF THE TRUCK CAN BE FITTED WITH A SMALLER MIRROR, BUT THERE IS PROBABLY A HUGE COST TO THE CUSTOMER. THERE MUST BE THOUSANDS OF PEOPLE WITH THIS TRUCK HAVING THE SAME PROBLEM. I DON'T THINK THAT I HAVE EVER COMPLAINED TO THENHTSA , BUT THIS IS VERY DANGEROUS AND I'M WORRIED.

6.6L GAS TRUCK WOULD NOT START. FORUMS IVE VISITED STATE THIS IS A KNOWN PROBLEM WITH THE ECM. AFTER APPROX 30MINS IT STARTED. HOWEVER BEFORE THAT IT SPUTTERED OUT EVERY TIME I WOULD TRY TO START IT. IT APPEARS TO BE AN INTERMITTENT PROBLEM. IT RAN FINE ONCE IT EVENTUALLY DID START. ALSO AUTO START WOULDN'T ENGAGE WHEN THIS PROBLEM WAS OCCURRING.