GMC Sierra 3500 owners have reported 91 power train related problems since 1996. Table 1 shows the 11 most common power train problems. The number one most common problem is related to the vehicle's power train (71 problems). The second most common problem is related to the vehicle's automatic transmission control module (6 problems). For details of each of the problem category, use the links in the table.
The contact owns a 2022 GMC Sierra 3500. The contact stated that while driving 65 mph and depressing the accelerator pedal, the vehicle hesitated before going into limp mode. A dealer was contacted. No warning light was illuminated. Read details...
My truck has been exhibiting hard downshifting at certain speeds, when the powertrain loads up such as a grade change, and requires a downshift. I have complained about this issue to the dealership as early as 2022, and 33,185 miles. The dealership made me pay for a transmission $388. Read details...
Transmission cooling lines leaking. Read details...
The front end of the vehicle vibrated. The transmission, brakes, bucket seats, and differential unit malfunctioned. Read details...
The contact owns a 2008 GMC Sierra 3500. The contact stated that while getting a service inspection at the dealer, they found that there was a transmission line leak. The dealer advised him that the line needed to be replaced and that it was not covered under warranty. The vehicle was repaired. Read details...