complaints.title

complaints.subtitle

225 complaints
GMC SIERRA 1500 2023 POWER TRAIN
high
Engine light came on while driving and a message on dashboard said Service Transmission Now.Unable To Shift Soon. Took to dealer and they said it was the park position switch 1circuit high. Had to ord
NHTSAUSJul 2026Source →
GMC SIERRA 1500 2023 UNKNOWN OR OTHER
medium
The upper hood trim that sits above the grill, flew off on the interstate at approx 80 mph. Upon research this is a common problem for this make and model in years of 22-24. GM has a service bulleti
NHTSAUSJul 2026Source →
GMC SIERRA 1500 2023 ENGINE
medium
Complete engine failure while driving on a highway. While cruise was set, the truck emitted a sound and sensation like we had run over something on the highway. Within a few minutes the engine started
NHTSAUSJul 2026Source →
GMC SIERRA 2500 2023 POWER TRAIN
medium
On XXX, I was towing my camper to Copper Center, Alaska from Palmer, Alaska when my truck experienced a full transmission shut down which put the truck into "Reduced Power Mode". We descending down th
NHTSAUSJul 2026Source →
GMC SIERRA 1500 2023 POWER TRAIN
high
While traveling at highway speed during rush hour commute, the vehicle lost engine power and stalled. While coasting, I tried to restart the engine several times without success. Before coming to a st
NHTSAUSJun 2026Source →
GMC SIERRA 1500 2023 STRUCTURE:BODY
medium
The front grill deflector sheared off of the truck when driving in the highway. The highway speed was 65 mph and the deflector flew out in to traffic. There was no warning or symptom prior to the prob
NHTSAUSJun 2026Source →
GMC SIERRA 1500 2023 STRUCTURE:BODY
low
The front grille/hood trim flew off driving down the highway. No, it is not available the cheap plastic shattered. My safety was put at risk b/c parts are flying off the truck that should never. More
NHTSAUSJun 2026Source →
GMC SIERRA 1500 2023 STRUCTURE:BODY
high
The attachment points for the upper chrome grille deflector have fractured, causing the trim piece to detach completely while driving and fly over my windshield which startled me and made me swerve da
NHTSAUSJun 2026Source →
GMC SIERRA 1500 2023 ENGINE AND ENGINE COOLING
medium
The contact owns a 2023 GMC Sierra 1500. The contact stated that while operating the vehicle, there was an engine knock at start-up, and the engine intermittently hesitated and skipped. The vehicle wa
NHTSAUSJun 2026Source →
GMC SIERRA 1500 2023 POWER TRAIN
low
the vehicle is actively presenting severe mechanical symptoms that make it entirely unsafe to operate on public roads. Specifically, it exhibits a violent shuddering and vibration through the cabin wh
NHTSAUSJun 2026Source →
GMC SIERRA 2500 2023 TIRES:TREAD/BELT
low
These tires are not safe for off-road to highway use. After transitioning to the highway from a gravel driveway, I noticed that rocks were stuck in the treads. A significant about of rocks became disl
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2023 POWER TRAIN
low
The truck side toy down shift and the accelerator was very high…. When I was going to park the reverse was not shifting…
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2023 ENGINE
medium
The lifters on my 2023 GMC Sierra failed and damaged my engine. The truck has approx 78,000 miles. I do have an extended warranty to 100,000 miles. I got the truck to my GMC Dealer who confirmed the
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2023 POWER TRAIN
low
Upon accelerating on the freeway, rear wheels locked up completely almost causing me to hit multiple vehicles. Was repeatable and was able to record the event. Manufacturer claims unable to reproduc
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2023 STRUCTURE:BODY
low
Driving down the interstate and the front trim bezel on the hood flew off. The plastic clips broke from underneath. GM had a recall on this same issue in 2022 but not 2023 yet. Could of had an accide
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2023 ENGINE
medium
This vehicle has experienced repeated catastrophic engine and drivability failures since purchase and has now undergone four engine replacements under warranty. Despite these major repairs, the vehicl
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2023 POWER TRAIN
medium
The transmission control module failed. The dealer said a I a high voltage alarm signal code. This was the diagnostic inform received from the dealership service department. Primary]: MDIAG : MISC. V
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2023 ENGINE
medium
On May 13. 2026 traveling southbound on I15 Utah at 75 MPH the engine Stop and put the tranmisson in N and I move the truck to a stop. then the Truck shut Down. I had the Truck tow to the nearest GMC
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2023 ENGINE
high
Traveling had an engine light come on. stopped at a dealer they inspected found multiple errors reset engine light and said continue home. when home bring into my dealer. Got home that night went t
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2023 ENGINE
medium
catastrophic internal engine failure on my 6.2L engine. Several times vehicle was to Gm Gunn Buick GMC regarding power loss knocking noises. Received the run around that vehicle past all their initial
NHTSAUSMay 2026Source →