GMC Sierra Complaints

15,732 consumer complaints on file.

#11658114May 1, 2025
ENGINE
On December 12th heading to Bozeman at 88 MPH on I-90, truck completely died at high speed. We were going to have it towed to Billion in Bozeman because this was the cheapest route. We then got notice from your dealership that we had to tow it to Billings because Billings dealership never transferred the paperwork from Canada. $825.00 later we dropped the car per towing at Billings dealership. Monday, went to dealership and there was no word as to when his truck could get fixed. I was told by GMC that we would be reimbursed for the towing expense and since you did not have a loaner vehicle the 2 options GMC provided were to rent or car, reimbursed or GMC would cover our loan payment until the truck was fixed. Every week called dealership for an update and there was no update. I ended up calling Menholt-Chevy because I wanted to know what the average wait time was for this sort of problem. He said they had engines but it would be the same engine installed and if the warranty was through GMC, GMC would have to do the work. We were hesitant to even drive with this same engine again and possibly having the same situation happen again. Menholt suggested we trade the vehicle. They came up with a trade deal through his dealership on February 10th. February 12th AJ with Menholt had the vehicle towed to their dealership, exactly 2 months later. Ali, from GMC emailed April 2 stating they can no longer re-imburse us because we did not accept any incentives that were offered through GMC and that they tried to work with us and we did not accept any of their offers. XXXX and I were never offered anything, Period. We asked dealership for proof of offers and they could not provide any. I have never been re-imbursed and have been ignored from that point forward. The dealership has misinformed GMC and GMC and the dealership misled us. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658119May 1, 2025
ENGINE
1) Complete Engine Failure. Vehicle is no longer is in possession for inspection but pictures and video can be provided. 2) My Truck stalled at 70 MPH going down the interstate. I was lucky to be driving in the right lane to glide to a complete stop. This could have been way worse, not just for myself but for others. 3) Shortly after the loss of propulsion on the interstate. The engine started knocking very loud and I brought it into Boucher GMC of Brookfield. After about a week, the conclusion was I needed a new Engine. The Bearings, camshaft, rods and other components within the engine were damaged. The dealership said it was because of Bad Oil. 4) Parts were inspected and Dealership provided pictures. Not sure what they did with the junk parts. 5) I initially brought in the vehicle where it was purchased at Kunes of Stoughton WI for a Check engine light that read a P06DD error code at 56472 miles on the truck. They performed a software update and sent me on way. Since then, I was dealing with a on and off engine light which eventually brought me to a engine replacement at about 70,000 miles. None of this was covered under warranty and I had to pay for all of this out of pocket. In the events of all this. GMC had my truck for about 3 months. I had to purchase another vehicle because it was cheaper then renting one, GMC didn't have a loaner I could use. I could not perform my everyday work tasks besides getting to and from work, because I did not have a truck to carry my everyday work tools. Now understanding the full impact of this faulty engine and that I could have done harm to others or my self, has me worried about driving a GM vehicle. After I received the new engine, approximately 2000 miles later, The new engine, not rebuilt started making a knocking noise, only to find out, it was the same issue after bringing it to the dealership. No engine lights or nothing. People should be scared to drive a vehicle with the L87 engine from GM.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658150May 1, 2025
ENGINE, STEERING
The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at slow speeds and accelerating out of the neighborhood, the vehicle experienced a loss of automotive power, with the check engine and EPS warning lights illuminated. The contact was able to drive the vehicle back to the residence. The vehicle was then towed to a local dealer where the vehicle was diagnosed, and the contact was informed that the engine had failed and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 103,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658155May 1, 2025
ELECTRICAL SYSTEM, ENGINE, STEERING
My engine and all electrical components including power steering and power brakes and all dashboard electrical will fail while driving. It is becoming more frequent and has almost caused an accident on numerous occasions to the point of not being able to drive safely on the highway any longer so now I only stay on surface streets and can't use for any out of town work. I usually do all of my own vehicle maintenance not been able to diagnose the culprit. Unfortunately I'm not able to afford the dealership diagnostic prices but open to any type of inspection.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658162May 1, 2025
UNKNOWN OR OTHER, POWER TRAIN, ENGINE
I've noticed rough or jerky gear shifting when accelerating, rough and reduced propulsion, loss of power. Dealership repaired power torque converter but the truck continue to have the same symptoms.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658165May 1, 2025
ENGINE
They’ve failed to remedy my situation. I called in twice and they told me there is nothing they can do yet even though I’ve noticed my engine lost power temporarily. Manufacturer Recall Number N252494000 NHTSA Recall Number 25V274
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658192May 1, 2025
POWER TRAIN, ENGINE
First GMC had my car 6 weeks for a problem with the coolant control valve which failed making the truck underivable. They couldn't fix it due to not being able to get the part with a national backorder. After a few weeks having the truck back I started having erratic bucking and shifting problems and once again the engine light came on and then truck went into limp mode. Felt like the truck got stuck in one gear and was dangerous to drive. I felt unsafe operating it even to limp back to the dealer. The incident with transmission happened at high speed on interstate 95. Kinda scary. They have told me they can't fix my truck for a minimum of 6-8 weeks, but I was told that would be a miracle. So service told me probably be 10-12 weeks if they can't get the parts. If they can!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658195May 1, 2025
ENGINE
During city driving my L87 engine losses power during acceleration. The start and stop feature makes loud scratching noises when it starts up.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658203May 1, 2025
ENGINE, POWER TRAIN
The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the transmission unintentionally downshifted into first gear. The contact stated that several unknown warning lights were illuminated. The vehicle was towed to a dealer, and it was diagnosed and determined that the torque converter needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was towed back to the dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was approximately 86,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658215May 1, 2025
ELECTRICAL SYSTEM, ENGINE, UNKNOWN OR OTHER
Purchase the truck [XXX]. In January of 2025 it started to feel like the engine was slipping. Near the end of February, it was getting worse and the locks started locking/unlocking on their own. The vehicle stalled two separate times while driving on a main road. The first couple days of March, the car stalled, again on the road while the locks went crazy. Then, on [XXX], after I had pulled out of my driveway in my neighborhood, my car completely shut down. We had to have the truck towed to Coyle GMC, in Clarksville, Indiana. And, as of May 1st, it is still there. We have been told they need some cap for the transmission and they don't know when they will get it. They offered to give us a new transmission, but they don't know when they'll get it. I am making car payments on a car that I have not had since May 7th. Unfortunately, because I drive my car for work, it had it's 32000 miles on it, so I can't turn it in for the lemon law. I'm very lucky that my son and I were not injured when the car stalled in the middle of the road. This is an ongoing issue with GMC, and I think it should be illegal that they were selling these trucks. I have a brand new truck that I haven't driven in 2 months. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658248May 1, 2025
ENGINE
Major engine failure with substantial loss of power while towing 24ft camp trailer. New engine has been installed. I was told by dealership that it was failure of engine bearings and connecting rods. They had seen a few similar cases
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658272May 1, 2025
ENGINE, POWER TRAIN
While driving down the highway I experienced a sudden lose of power with check engine and other associated warning lights immediately illuminated. It has been confirmed by my independent service center and a GMC dealer that the engine lifters and camshaft failed. I have documentation to prove the vehicle has been traded to a GMC dealer. My safety and the safety of other divers around me was put at risk as I abruptly lost power at highway speeds and this caused traffic around me to slow very quickly and swerve to avoid collision. Serious personal and public injury or death was narrowly avoided due to the quick response of other drivers. I had to limp the vehicle to a safe place to exit the highway and avoid further danger. After speaking with the dealer and my independent maintenance professional I can say that the problem was showing eminent failure, for about a year there was a tik I was hearing that in the past had been described as the "GM TIK" some mechanics said it was normal others said it might be a problem but none of them ever recommended a repair. I believe this is related to the problem reported by my local news agency on 4/30/2025
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658274May 1, 2025
ENGINE
We were on the highway going 65 mph and all a sudden a long bang happened. After that the anti skid light came on causing the truck to drive hard and lack of power. The engine had a sound that didn’t seam right.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658275May 1, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2024 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658278May 1, 2025
ENGINE, SERVICE BRAKES
6.2L v8 the same as 2021 to 2024 engine built the same way and im experiencing the same issues and the dealership wont fix it , i would like to get a response if this will be included or should i file a lawsuit and take legal action thank you
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658308May 1, 2025
ENGINE, UNKNOWN OR OTHER
We NEVER RECEIVED A RECALL NOTICE FYI . This vehicle has been serviced consistently.never an issue. Driving on [XXX] very busy! Truck literally stopped in the middle of the freeway in a very bad location. Desert. Noon. Kids with us. Could have died. Preliminary eval: engine seized, piston rod failure. Not sure the rest - we have to tow it home first. Failed while traveling. Please call for more information if needed. [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658311May 1, 2025
ENGINE
Spun main bearing in motor. Motor blown. It is available for inspection. GM mechanic inspected and quoted for new motor. Vehicle shut down going down interstate at 78 mph. No warning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658322May 1, 2025
LANE DEPARTURE: BLIND SPOT DETECTION, POWER TRAIN, UNKNOWN OR OTHER
Power loss at lower gearing speeds and also separator loss of motion when applying gas to make truck move after complete stops. Also blind spot monitoring glitch saying vehicles are beside randomly when no traffic nearby issue to safety by drivability problems and safety components effecting correct monitoring of surroundings.check engine light also has been on more then 2 - 5 times dealer always stating due to sensors in driving components.has been inspected numerous times for similar issues with check engine lights and drive ability issues with loading power random times unsure of where problem exactly resides. Main vehicle for transportation for infant cannot have safety or mechanical issues u resolved but GMC has not corrected this problem at this time and when taking to dealership they asking for charges for inspection of power issues.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658325May 1, 2025
ENGINE, POWER TRAIN
I was coming home after work, before I got home I stopped at the gas station to fill up my tank, after I filled up my tank I start driving home but while on my way home my truck wasn’t speed as I expected and it only goes maximum of 10mph and I was confused, I stop and check my truck see what happens but there is no sign since there was no sign I get on my truck and start driving to home, after I got home I was trying to revers parking and that’s when I realized my truck wouldn’t reverse. I thought of if it happened while I was driving on highway and my truck stopped on the middle of highway I could have lost my life. I called the dealer and the dealer told me it might be because of the engine then next day I took it to the shop and they couldn’t figure until couple days later and it took them around 2-3 weeks to replace my transmission. Luckily I had the power train warranty when I bought the vehicle and it don’t cost anything. If I didn’t have that power train warranty everything will come out of my pocket, the cost was around $6-7k.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658329May 1, 2025
ENGINE
Coolant Control Valve (ccv) on these vehicles are notorious for breaking down/ becoming non-operative. I have been waiting for a part for months.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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