GMC Sierra Complaints

15,732 consumer complaints on file.

#11627668November 27, 2024
ENGINE
Lifter failure cylinder 1 at 82458 should be a recall
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627710November 27, 2024
ENGINE
The contact owns a 2024 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle lost motive power with the message "Engine Power Reduced" and the vehicle was unable to accelerate above 5 MPH. The vehicle returned to normal functionality, but the failure became a regular occurrence. The check engine warning light was illuminated. The vehicle was towed to the dealer, who was unable to duplicate the failure or provide a diagnosis. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 9,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627720November 27, 2024
SERVICE BRAKES
Trailer brake controller will intermittently stop working. “Check trailer wiring” will show up randomly on the display and no trailer braking will be available. This has happened with 3 different trailers. The trailer wiring was gone over and the issue is with the truck. Trailer brakes work with other trucks and aftermarket trailer brake controllers. GMC and dealer were notified and no fix is available. Researching online there are several complaints about this. The trailer brake signal should default to being sent similar to all aftermarket trailer brake controllers. This would be much safer rather than not sending the brake signal at all. This HD truck is rated to tow trailers over 20,000lbs and without trailer brakes it causes an extremely dangerous situation. I was forced to pull over on the highway and purchase an aftermarket trailer brake controller to continue safe travel.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627761November 27, 2024
UNKNOWN OR OTHER
The tailgate is randomly opening during driving. I had some equipment fall out on a busy four lane road, I only knew because I had my window down and heard some clanging. I looked out my rear mirror to see tools going all over the road. I had to go back and close a lane with the truck and clean up everything in traffic before a crash was caused. It happened recently again, but luckily, my camper shell kept the gate up this time even though it was unlatched. I thought maybe the key fob, which has a button to open the tailgate, was being pressed. However, I just tested it in the parking lot, and the key fob does not work when moving (as it shouldn’t). No codes are being shown on the dashboard. The tailgate is actuated electronically by the computer, and there is no mechanical link or handle to open it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627775November 27, 2024
POWER TRAIN
Experienced loss of power and inability to maintain highway speeds. The Transmission shifted violently and RPMs went as high as 3500. Was able to move off the highway but cars behind us had to dodge us when it failed. There was warning message on the dash and a CEL. The truck threw two codes P0700, P0747. I was able to limp to a dealer 5 miles away. This is a known TSB with GM. There is a solenoid failure in the Transmission. There is 30-90 day backorder on parts as the failure is so prevalent.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627801November 27, 2024
STEERING, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Simply driving down the road an all your lights insode an out glitching along with steering. The steering locks up an comes back. It does not matter what you are doing. It will lock up at any giving moment. Putting you in dangerous way of others. 3months an you can barely turn it because the power steering is totally out. It now does not want to start as it needa jumped. Something electrical is draining it daily. Power steering assist light has been on.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627389November 26, 2024
ELECTRICAL SYSTEM, EXTERIOR LIGHTING
On 11/21/24 noticed passenger headlight day light running light flickering. On 11/22/24 right turn indicator intermittent fast blink, dash message stated turn indicator failure. Once home, inspected passenger headlight assembly. Found DRL, turn signal, and low and high beam head lights were inoperative. On 11/25/24 went to GMC dealer/service. Staff seemed aware of issues and stated they are common, that they carry the $1,400 sealed assebly in stock. Vehicle is 4 months over warranty, but only has 29,000 miles. There is no visible damage to the assembly, but there is visible condensation inside the lens. GM has a published service bulletin, 01-08-42-001P, that specifically addresses this issue for my vehicle. The earliest date the issue could be diagnosed/service date is 12/10/24. A complete failure of this non-servicable headlight assembly is an absolute safety issue. Decreased daytime visability with the loss of one of two Daytime Running Lights, the lose of the front turn indicator to alert other drivers of my intentions, the lose of a set of low and high beam headlights. As mentioned, there assembies are a sealed LED light assembly. If any one of these lights fail, the only remedy is the replacement of the entire unit with a $1,400 part. GM has had multiple recalls of this same issue among their vehicle, but continues to produce the same failing pieces.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627438November 26, 2024
AIR BAGS, POWER TRAIN
Issue 1: Driver side front seat airbag connector separated disabling the airbag. (repaired at my cost) Issue 2: Transmission (10 speed auto) developed stutter and skip consistent with complaints resulting in recall of 2020 (next model year truck) due to risk of rear wheel lock up. GM needs to include the 2019 models that were built as 2019 (as 2020) in one of the plants while they continued to build the 2018 as 2018 "classics" during the changeover. My cost to repair will be $3600 and there is not guarantee that the new valve body is any better or if GM is simply giving me another 46k miles to wait for another failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627444November 26, 2024
VISIBILITY/WIPER
Illumination for the rear view camera is insufficient, making the camera useless for rear visibility in dark conditions.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627460November 26, 2024
ENGINE, FUEL SYSTEM, DIESEL
The contact owns a 2020 GMC Sierra 3500. The contact stated while driving approximately 60 MPH, the vehicle jerked, lost motive power, and almost stopped unintendedly. There was no warning light illuminated. The contact was able to pull into a parking lot, where the vehicle shut off. The contact stated that while attempting to restart the vehicle, the diagnostic trouble code: P129F was displayed, and the vehicle failed to restart. The vehicle was towed to the residence. The local dealer was contacted and advised the contact that the failure might be related to the fuel pump control module and that the part was on backorder. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 19,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627572November 26, 2024
UNKNOWN OR OTHER
This vehicle has an electronic tailgate release mechanism. This is the 1/2 ton version of GMC ‘s pickup. The tailgate releases randomly and opens, generally while driving down the highway. I have dump the contents of the truck bed on the road immediately in front of vehicles which are behind me, causing serious handling and collision issues for the trailing vehicles. No accidents have occurred yet. When I have called the GMC dealer, they inform me that the electronic tailgate release mechanism HAS BEEN RECALLED ON OTHER GMC TRUCKS for this EXACT reason but NOT for my model. While they will repair the device if they can get it to fail in the shop(which it wont), they will NOT replace it under warranty because it has not been recalled. How can this be?? It is clearly a recall issue and should be included in the recall program.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627163November 25, 2024
ENGINE
The contact owns a 2022 GMC Sierra 1500. The contact stated that her son had called while pulled over to inform her that the vehicle was driving rough with the check engine and several other unknown warning lights illuminated. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the engine had failed and needed to be replaced. The contact stated that the dealer had since closed, and the vehicle was then towed to Marty's GMC (5 Kingston Collection Way, Kingston, MA 02364); who confirmed that the engine needed to be replaced. The vehicle had not yet been repaired. The manufacturer was informed of the failure and opened a case. The failure mileage was 78,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627201November 25, 2024
ENGINE
The contact owned a 2024 GMC Sierra 2500 HD. The contact stated that after parking the vehicle at night and plugging in the engine block heater to a standard 110-Volt outlet with an extension cord; 15-minutes later neighbors were screaming to the contact to exit the residence because the vehicle had caught on fire, and the residence was also on fire. The contact exited the residence and saw that the vehicle was fully engulfed in flames. The contact stated that the vehicle had disintegrated to the ground. The Fire Department was called and was able to extinguish the fires to the vehicle and the residence. The contact stated that the Insurance provider and the Fire Department’s Inspector linked the failure to the engine block heater. The contact stated that he was currently without a vehicle or a place of residence due to the fire. The contact stated that the Police Department was also on scene however, a Police report was not filed. The contact stated that the remains vehicle remained in the driveway of the residence and the Insurance provider was in the process of towing the vehicle away. The vehicle was deemed a total loss. The manufacturer was notified of the failure but had not offered any assistance. The failure mileage was 18,410.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11627208November 25, 2024
POWER TRAIN, POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at 45 MPH, the vehicle began to shudder, and he decreased the speed. The contact drove to his residence. The next day the vehicle was driving as expected until it became hot and began to shudder again. The transmission was not shifting as designed. The contact checked underneath the vehicle but failed to locate an issue with the transmission. The rear differential was hot and burned his fingers, but medical attention was not provided. The vehicle was taken to the local dealer, where it was diagnosed that the torque converter and transmission needed to be replaced. The vehicle was not repaired. The manufacturer was contacted, but no additional assistance was provided. The failure mileage was approximately 22,000.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11626764November 22, 2024
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
The contact owns a 2018 GMC Sierra 1500. The contact stated that after starting the vehicle, there was an abnormal ticking sound coming from engine compartment. The vehicle was taken to the local dealer who diagnosed that the exhaust manifold bolts had fractured and needed to be replaced. The vehicle was not yet repaired. The manufacturer was not yet notified of the failure. The failure mileage was 64,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11626850November 22, 2024
POWER TRAIN, WHEELS
My end of year 2019 produced GMC Sierra 1500 5.3 V8, 4WD X31 4 door truck had a serious malfunction that could have caused great harm. I was driving down my driveway at approximately 20 mph when the truck's rear wheels locked up, stopping the truck instantly, sending me into the steering wheel narrowly missing the windshield with my face. After a moment, I attempted to drive again to move the truck out of the travel path. When I did, the truck back wheels completely locked up again (when I reached 6mph). I had the truck towed to my local shop and was told that it was the transmission locking up making the wheels lock up. The part (transmission) that was ordered for repair was on national backorder and took over two months to get my truck repaired and functional again. I was fortunate to have a warranty (now expired) and pay a percentage of the repair fee, however, the total repair fee was near 12,000. This was paid for by myself and my warranty company. Considering the part was on national backorder, I know that these types of problems are occurring with many of these trucks. I learned of the recall for this same problem that my truck had and checked the recall for my vin. To my complete surprise, my truck was not listed as being recalled, even though the EXACT same problem occurred with my truck. I would like to get the cost of the repairs refunded considering it took GM so long to recall the problem leaving me to pay for their errors. This is not a cheap automobile and was expected to be built well. I am very fortunate that I was not on a major highway or traveling at a high rate of speed when this happened. It was a very scary ordeal being propelled into the windshield of your vehicle when driving due to abrupt, extremely unusual 100% mechanical failure of no fault of your own. This recall should be expanded to include ALL vehicles that have the faulty transmission, including mine. Repair receipts can be provided. I appreciate your time and consideration.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11626597November 21, 2024
UNKNOWN OR OTHER
The trim piece above the grill and below where the hood sits when closed failed/cracked at all attachment points (8 clips and 2 screws). This happened at highway speeds. The trim piece which is approximately 4-5 ft long and 3-4 in wide flew above the hood, struck the windshield and then flew behind the vehicle and may have struck another vehicle or motorcycle rider. This is a dangerous situation that could have injured or killed a motercycle rider if it had struck them. Apparently, based upon postings in forums and speaking with repair shops and the dealership this has happened a lot with this particular piece.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11626328November 20, 2024
POWER TRAIN
The contact owns a 2015 GMC Sierra 1500. The contact stated that while depressing the accelerator pedal, the RPM's increased; however, the vehicle failed to properly accelerate. During the failure the trailer hitch and 4WD messages were displayed. 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 failure mileage was 119,453.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11626451November 20, 2024
POWER TRAIN
The contact owns a 2020 GMC Sierra 2500. The contact stated while driving approximately 65 MPH, the vehicle lost motive power. The contact stated that he had not depressed the brake pedal. The contact was towing a 20-foot flatbed trailer with a load of lumber of approximately 4,000 lbs. in weight. The contact stated there was no warning light illuminated. The contact pulled over with the vehicle still running and attempted to shift into drive(D) and reverse(R); however, the vehicle failed to respond. The contact stated that after shifting into drive(D), several unknown warning lights were illuminated. The contact had the vehicle towed to a local dealer; however, the vehicle was not diagnosed or repaired. The contact researched online and related the failure to NHTSA Campaign Number: 24V797000 (Power Train). The manufacturer was informed of the failure. The failure mileage was approximately 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11626464November 20, 2024
POWER TRAIN
When the transmission downshifts the rear wheels lock up and the truck skids out of control. I have to be very careful with gas pedal pressure to not allow the transmission to downshift by 2 or more gears. This is virtually impossible in mountain terrain, where I visit routinely.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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