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22 complaints
GMC SIERRA 2500 2025 SERVICE BRAKES
medium
Power steering pump failed when decelerating after 9500 miles. When power steering pump fails, power assisted braking also fails. Upon deceleration, I could not turn the steering wheel at all or stop
NHTSAUSMay 2026Source →
GMC SIERRA 2500 2025 EXTERIOR LIGHTING
low
Reverse lamps are not bright. Camera does not brighten area either. Very unsafe to reverse in the dark. Have to touch the brake pedal to be able to see while backing. Also have tried the LEDs i
NHTSAUSMar 2026Source →
GMC SIERRA 2500 2025 STRUCTURE:BODY:HATCHBACK/LIFTGATE
medium
The contact owns a 2025 GMC Sierra 2500. The contact stated that the front driver’s side door handle failed to operate as needed, and the contact was unable to exit the vehicle through the driver’
NHTSAUSMar 2026Source →
GMC SIERRA 2500 2025 STEERING
high
On highway taking an exit. The brake pedal sank and did not engage at normal pressure, I had to push the brake all the way down for it to engage. Concurrently the steering wheel locked up where I cou
NHTSAUSFeb 2026Source →
GMC SIERRA 2500 2025 POWER TRAIN
medium
The transfer case leaked out all the fluid while driving over a period of time and damaged internal parts before the first oil change. This has happened 2 times now, and is currently leaking again wit
NHTSAUSDec 2025Source →
GMC SIERRA 2500 2025 ENGINE
high
Burning an unusual amount of oil. Have seen several instances of blue smoke in the exhaust. Have had to add over a quart of oil twice in less than 6500 miles.
NHTSAUSDec 2025Source →
GMC SIERRA 2500 2025 UNKNOWN OR OTHER
medium
Component / System Failure The exhaust system, specifically the exhaust manifolds and previously the EGR system components, appear to have failed or malfunctioned, allowing exhaust gases to enter the
NHTSAUSDec 2025Source →
GMC SIERRA 2500 2025 EQUIPMENT
medium
The contact owns a 2025 GMC Sierra 2500. The contact researched online and became aware that there was a recent recall under NHTSA Campaign Number: 25V815000 (Equipment) for the Owner's Manual. The co
NHTSAUSDec 2025Source →
GMC SIERRA 2500 2025 POWER TRAIN
medium
transmission locked up 8 times from 1,050 miles to current 3,885 miles. It has happens each time around 40 mph. Each time it’s like hitting the brakes. The 8th time it locked really hard like slammi
NHTSAUSNov 2025Source →
GMC SIERRA 2500 2025 UNKNOWN OR OTHER
high
Had a minor wreck was to be two weeks to then it had to have a new frame they said it coun't be repair if a minor wreck can do this much damage there is a problem with subpar frames that any sudden st
NHTSAUSOct 2025Source →
GMC SIERRA 2500 2025 EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)
low
See attached document for complaint.
NHTSAUSSept 2025Source →
GMC SIERRA 2500 2025 ENGINE
high
We were towing a fifth wheel camper with our truck on an interstate highway in Pennsylvania when our serpentine belt burst suddenly and without warning. Our truck is a 2025 model with only 10,000 mil
NHTSAUSSept 2025Source →
GMC SIERRA 2500 2025 STEERING
low
While towing a less than 2000 lb trailer I had total loss of power steering when speeds dropped below about 5 mph. I got off interstate and was turning right at the end of exit ramp and I could barely
NHTSAUSAug 2025Source →
GMC SIERRA 2500 2025 SERVICE BRAKES
medium
We noticed that the brakes were really soft. We literally had to push on the brakes with excessive force. We took it to Lynch - West Bend, WI for a service call and was told that nothing was wrong w
NHTSAUSAug 2025Source →
GMC SIERRA 2500 2025 STRUCTURE:BODY
high
The accident occurred when the tailgate opened without warning or any buttons being pushed while towing a boat trailer. The tailgate become bound between the truck and trailer. The tailgate was dama
NHTSAUSJun 2025Source →
GMC SIERRA 2500 2025 SUSPENSION
medium
The passenger side rear wheel went into a pothole while making a right turn on a city street. This resulted in the right rear leaf spring breaking at the forward mounting point. This caused thr rear a
NHTSAUSJun 2025Source →
GMC SIERRA 2500 2025 STEERING
medium
The contact owns a 2025 GMC Sierra 2500. The contact stated that while driving at an undisclosed speed, after driving over a small pothole on the road, the alignment was dramatically altered, causing
NHTSAUSJun 2025Source →
GMC SIERRA 2500 2025 STEERING
low
Experienced loss of power steering, loss of brakes
NHTSAUSMay 2025Source →
GMC SIERRA 2500 2025 STEERING
low
i experience a steering wheel shimmy between the speeds of 70- 75 miles an hour
NHTSAUSMay 2025Source →
GMC SIERRA 2500 2025 UNKNOWN OR OTHER
high
The truck is not even 2 weeks old and driving down the road at less than 50mph the sunroof exploded. Nothing fell on the sunroof and no other vehicles were near the truck at the time the sunroof bust
NHTSAUSMay 2025Source →