GMC Sierra Complaints (2024)

545 consumer complaints on file.

#11651464March 29, 2025
POWER TRAIN
As I pulled away from a stop sign, my vehicle started surging and went into limp mode, I pulled over to the side of the road to get out of the way of traffic and could not drive in reverse as I tried to park safely on the shoulder of the road. I had to have truck towed and deealership stated there was an issue with the transmission control valve and it would need to be rebuilt. Performed GM TSB 25-NA-014.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651113March 27, 2025
ENGINE
My vehicle stalled while driving on the highway. It has been reported by the dealership that the engine seized, with under 18,000 miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11650350March 24, 2025
ENGINE
After 17500 miles and 11 months ownership 6.2ltr engine stopped operations while driving, in traffic and locked up on interstate without warning. Towed to Chevrolet Dealership and disassembled, main crankshaft bearings failed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11650041March 23, 2025
ENGINE
My vehicle started rough with rattling and knocking one morning. I contacted my dealer and made an appointment. I received an appointment for about a week out and did not operate the vehicle until that day. Upon bringing the vehicle to the GMC maintenance shop, the vehicle’s engine ceased and had to be towed the remainder of the trip.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649726March 21, 2025
ENGINE, POWER TRAIN
My motor seized and shut off while driving 63 mph on a busy highway going up hill. Truck made it to the top of the hill before it shut off and had to coast to a stop on the side of the road. No warning lights or anything. Rpms locked at 3000 and wouldn’t go up or down until the motor shut off. Switched itself to neutral while it was rolling still and wouldn’t allow my to put the truck in park when stopped. Finally locked itself in park and wouldn’t allow to be shifted to neutral. Dealership said the motor seized and ordered a new one but is on back order
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649759March 21, 2025
FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER
Replaced the exhaust tail pipe tip past the DPF and warning light came on after miles of driving. Vehicle was locked up and only able to drive 55 Mph and there was a countdown to it dropping even lower. Dangerous to limit speed. This shouldn’t happen anyway with just changing out exhaust tailpipe. Very costly unnecessary repair
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649398March 20, 2025
ENGINE
On the morning of March 12, 2025, I started experiencing a ticking sound from the engine bay under throttle. I suspected lifter failure and decided to proceed to the dealership that afternoon for repairs. During my commute, the engine started squealing and shuddering and I experienced a severe loss of acceleration which made it almost unsafe to drive on the highway. Upon coming to a stop in traffic, the engine died. I was able to get it restarted and proceeded to continue my trek to the dealership. Upon another traffic stop, the engine died again, at which point I made the decision to exit the highway and continue my journey along the service road. Twice more the engine died when coming to a stop and the 4th time it struggled to restart. I finally decided to pull into a parking lot and as I was backing into a parking space, the engine died its final time and would not crank/turn over. To make matters more difficult, the transmission would not even shift out of "PARK" into "NEUTRAL" for it to be laoded onto a tow truck. Each time I tried to shift out of "PARK" I received a message stating "Conditions for shift not met"
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649361March 19, 2025
ENGINE
While driving on a 55 mp road [XXX] the truck just stopped running. I had just turned from [XXX] onto [XXX] and had not gotten up to speed. I was only traveling at about 25 mph when the truck seized and stopped. No power to control vehicle. No power and no warning prior to no power. Only 18k miles on the truck and it died and wouldn't restart. It sat in the middle of the road and stayed in the middle of the road for an hour waiting on a tow. 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
#11648923March 18, 2025
STRUCTURE:BODY
The Vader Chrome on the front of vehicle is peeling. This includes the grille and surrounding areas. This area has been inspected by a representative at GMC and at a dealership. GMC refuses to stand by their product.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648694March 17, 2025
VISIBILITY/WIPER
The truck bed cover is not secure, it fits in via a channel with no straps or other protections and so when driving on the highway, it flies off from the connection to the cab and you can’t see behind you. It then smacks into the car until you can pull over. There is no protection against this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648853March 17, 2025
POWER TRAIN
While driving I experienced a loss of forward momentum, and watched the RPMs go up to 3000, wording came on the dash, but I was in traffic and wasn't able to read. I was able to reach next light about 1/4 mile, and stopped. Mad a left turn and within 200 feet, same issue. I pulled over and called OnStar. Towed to dealer. Dealer put on lift right away, as it was just in for 1st service on Saturday, with 4775 miles. Dealer informed me of a bulletin out for removing transmission pan, and splitting plates to check a ball size for 6th gear, which they found during the computer diagnostic checks. They claim to have a part tomorrow, and will install soon after.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648882March 17, 2025
ELECTRICAL SYSTEM
Having issues with inner tailgate opening on its own and items falling out of bed/box onto road!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648892March 17, 2025
ENGINE, ELECTRICAL SYSTEM, POWER TRAIN
Truck just made a year old and killed on me in the middle of road. They are saying I need a new engine and maybe transmission. Could not shift truck into neutral, which left me stranded on busy road. For unsafe and had me nervous. Trying to get GMC to buy me out of this vehicle. Had same problem with 6.2 liter prior to this truck. Engine and transmission was replaced. They promised if I bought new truck, I wouldn’t have the issues and here I am again. This is terrible.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648066March 13, 2025
POWER TRAIN
DEF tank heater, diesel exhaust fluid heater has failed which causes the truck to go into a reduced speed until fixed. GM has no parts to fix the issue! at my dealer. Currently there is three or four trucks waiting on the exact same part, it puts the truck into reduced power and speed until part is replaced
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648167March 13, 2025
EXTERIOR LIGHTING
The reverse lights don’t illuminate camera when you’re in a dark parking lot or area. If and when camera is relied on for reverse, you wouldn’t be able to see a person or anything else. It’s a lighting problem. When you are in an area that is lit (dealer parking lot) you can see fine. I also own a 2014 Chevrolet and camera works fine in dark and lit areas.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648198March 13, 2025
VEHICLE SPEED CONTROL, ENGINE, STRUCTURE:BODY
1.During December 2024, noticed the wrap or called grill part at the back of the truck detached 2.On 5th February, got a warning :reduce acceleration with caution, when I pressed gas pedal, could not go faster than 35mph, the truck was shaking really hard. It has been in the dealership waiting for valve body until today 13th March, still no idea when it will be fixed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647635March 11, 2025
ENGINE
Catastrophic Engine Failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647725March 11, 2025
ENGINE
Engine locked up while driving. I was able to get off the highway. Truck would not crank back up. When trying to start it screens would light up then go black. I had truck towed to nearest GM dealership. The GM dealership informed me that the engine was locked up.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647759March 11, 2025
STEERING
My truck wonders down the highway. It has been to the dealership well over 4 times. They have aligned the truck multiple times, changed the steering gear box, changed the power steering pump, changed tires and nothing fixes it. It takes constant adjusting of the steering to stay in my lane on any road. Quite pitiful for a $90,000 truck. It is currently at the dealership for the THIRD time in the past 7 days because they can’t get the truck to stop leaking fluids since changing the power steering pump. Excessive play in the steering and has been like that since day one that I left the lot. My wife can’t even drive the truck because she feels unsafe with how much play is in the steering. The dealership won’t do anything about it and is offering $20,000 less than I gave for the truck now that I can’t tolerate it anymore. But I refuse to lose that much money with only 13,000 miles on it. I just want a safe and reliable truck for my business and my family. Unfortunately that is not what GM has provided me with.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11646830March 6, 2025
VEHICLE SPEED CONTROL, POWER TRAIN
The vehicle was traveling over a hill, and it failed to shift gears downwards when traveling over the hill. The vehicle’s RPM’s shot up to 4000+ and jolted the truck forward without pressing the gas pedal. The vehicle made a loud noise and would not accelerate in the middle of the road. The vehicle would only accelerate after giving it minimal gas from the pedal. The truck then failed to accelerate on the entire drive to the destination and failed to enter reverse upon arriving to my destination.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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