GMC Terrain owners have reported 92 vehicle speed control related problems since 1996. Table 1 shows the 6 most common vehicle speed control problems. The number one most common problem is related to the vehicle's vehicle speed control (82 problems). The second most common problem is related to the vehicle's cruise control (4 problems). For details of each of the problem category, use the links in the table.
Vehicle struggles to shift from low gears; seems to completely miss 3rd gear. Codes from maintenance indicate tcc slip Read details...
The contact owns a 2022 GMC Terrain. The contact stated that on four occasions while driving with the adaptive cruise control function engaged, the vehicle shut off unintendedly. The adaptive cruise control was set to 76 mph and the vehicle decelerated to 34 mph in several seconds. Read details...
While pulling into a parking spot very slow the vehicle accelerated and damaged car in front there are traction marks showing the sudden acceleration. The car would not stop until the ignition was turned off. Read details...
The contact owns a 2010 GMC Terrain. The contact stated that while driving at 30 mph, the accelerator pedal was depressed but the vehicle failed to accelerate. In addition, the contact stated that the vehicle failed to reverse. Read details...
The contact owns a 2019 GMC Terrain. The contact stated while driving approximately 40 mph, the accelerator was depressed to overtake a vehicle; however, the vehicle hesitated, and rpm revved to 4,000 rpm. The vehicle then shifted into gear with a jerk, causing the vehicle to shake abnormally. Read details...