complaints.title

complaints.subtitle

84 complaints
GMC SIERRA 1500 2024 ENGINE
medium
Engine failure at 12,000 miles
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2024 ENGINE
medium
Engine failure after passing PICO test. Engine completely locked up on a busy highway without the ability to even put it in neutral. Yes, confirmed by dealer that there were metal shavings in the fl
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2024 UNKNOWN OR OTHER
low
upper grille detachment while driving on the interstate at 70 mph at night ,hit the windshield. could not find it.
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2024 ENGINE
low
Traveling Northbound in the left lane on [XXX] approximately 1 mile prior to the [XXX] exit. I increased my speed to move to the right lane and exit. After moving the the right lane and signaling to
NHTSAUSMay 2026Source →
GMC SIERRA EV 2024 SERVICE BRAKES
low
After the latest update from the Dealer, the integrated trailer brake module no longer shows an output of how much power it's applying to the trailer brake system. It just stays blank. I can tell that
NHTSAUSMay 2026Source →
GMC SIERRA 3500 2024 WHEELS
medium
The control arm bearing appears to have failed without warning causing loss of steering control. This occurred at low speed on a street in [XXX] last night near a gas station, so the driver was able
NHTSAUSMay 2026Source →
GMC SIERRA EV 2024 ELECTRICAL SYSTEM
critical
I was driving and noticed a very strong smell of an electrical fire. The truck popped up a High Voltage Battery warning and several warning lights came on. We stopped, restarted the truck and the lig
NHTSAUSMay 2026Source →
GMC SIERRA 1500 2024 ENGINE
low
October 24, 2025 I had taken in my vehicle for recall 25V274 Loss of motor power. Mine was deemed unaffected and given the oil change they were doing as part of that. Today it died while I was pulling
NHTSAUSApr 2026Source →
GMC SIERRA 1500 2024 ENGINE
medium
GM 6.2L L87 was recalled. I took the truck in at 32,000 miles. GM dealer perfromed a Pico Test, motor failed. Motor replaced with "NEW" crate motor. I was without a truck or loaner for 3 weeks. Dealer
NHTSAUSApr 2026Source →
GMC SIERRA 3500 2024 FUEL/PROPULSION SYSTEM
medium
Transmission valve body failure contestant with Recall # N242454440. Dealer diagnosed valve body failure and corrective action of Valve body rebuild. I would like 2024 models to be included with this
NHTSAUSApr 2026Source →
GMC SIERRA 2500 2024 AIR BAGS
high
Driving back to camper in the late evening and was listening to music and gps was on the screen when I was going approximately 32mph when headliner airbags on both sides went off causing me to hit my
NHTSAUSApr 2026Source →
GMC SIERRA 1500 2024 POWER TRAIN
low
When I begin to accelerate on the highway, and the truck downshifts, it locks up the rear brakes.
NHTSAUSApr 2026Source →
GMC SIERRA 1500 2024 FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
low
“Service Driver Assist System” message appears every time I turn on my truck. Vehicle would randomly break when driving at slow speeds and show the forward collision alert even if no objects/ ca
NHTSAUSApr 2026Source →
GMC SIERRA 1500 2024 ENGINE
low
Engine seized while driving. vehicle was inoperable.
NHTSAUSApr 2026Source →
GMC SIERRA 1500 2024 STRUCTURE:BODY
medium
The front upper grille broke off and detached at highway speeds. The grille impacted the hood, causing a scratch and dent and became a road hazard and has the potential to cause an accident. This is t
NHTSAUSMar 2026Source →
GMC SIERRA 1500 2024 ENGINE
high
I was driving and lost engine power in the left lane of a freeway, cut across traffic and coasted to the shoulder. Had truck 6' off of road, though with semis and cars passing at 70mph, I left and wa
NHTSAUSMar 2026Source →
GMC SIERRA 1500 2024 POWER TRAIN
low
Engine seized
NHTSAUSMar 2026Source →
GMC SIERRA 2500 2024 UNKNOWN OR OTHER
medium
IOK Radio Module failure. Inhibits hands free calling, total loss of all audio including safety chimes, dropped emergency call capability, multiple software updates have failed to resolve it. Vehicle
NHTSAUSMar 2026Source →
GMC SIERRA 1500 2024 UNKNOWN OR OTHER
high
While driving 65mph in my 2024 GMC Sierra Denali Ultimate on Interstate 270 in Hilliard, Ohio my chrome grill deflector just flew off and hit my windshield. It then went over my truck and almost cause
NHTSAUSMar 2026Source →
GMC SIERRA 3500 2024 FUEL/PROPULSION SYSTEM
medium
The service department has identified "gasoline contamination" as the cause of a fuel system failure; however, this diagnosis is directly contradicted by both the shop’s internal test results and in
NHTSAUSMar 2026Source →