Car Accelerates On Its Own Problems of GMC Terrain

GMC Terrain owners have reported 3 problems related to car accelerates on its own (under the vehicle speed control category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Terrain based on all problems reported for the Terrain.

1 Car Accelerates On Its Own problem of the 2015 GMC Terrain

Failure Date: 12/16/2019

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. Because the cars in front were hit I placed the car in park after the ignition was turned off.

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2 Car Accelerates On Its Own problem of the 2012 GMC Terrain

Failure Date: 04/29/2016

Sudden unintended acceleration when vehicle shifted from park to drive, resulted in extreme high speed acceleration and no control of vehicle. This resulted in a high impact crash into garage side wall. Also air bag did not deploy. Assume throttle wide open causing sudden acceleration. Insurance report , and police report pending.

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3 Car Accelerates On Its Own problem of the 2010 GMC Terrain

Failure Date: 10/17/2013

On 10/17/2013 my wife experienced a sudden acceleration while pulling into a parking space at our local walgreen's pharmacy. As she was pulling into a parking space in front of the pharmacy the car kept moving forward slowly although she was pressing on the brake pedal as hard as she could. The car crawled up the concrete curb stop slowly and hit the steel pipe bollard placed in front of the curb stop to protect the walkway front of the store. No injuries occurred to my wife, no one was on the walkway at the time. Only damage was to the bollard (bent over) plastic bumper, grill and right front fender of the car. Bollard and a trash receptacle brought the car to a stop. This is the second time this occurred. The first occasion was about a year ago when I was driving on a neighborhood residential street approaching a stop sign. As the car was slowing down and I was pressing on the brake pedal the car kept moving forward with the brakes being fully applied. Could hear the engine straining at an increased rpm. I lifted my foot off the brake pedal and jammed it down hard again and the car came to a stop at the stop sign with the engine in normal idle. In the three years we have owned this car these are the only occasions the problem has occurred.

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Problem Category	Number of Problems
Vehicle Speed Control problems	58
Cruise Control problems	3
Car Accelerates On Its Own problems	3
Speed Control Cable problems	1
Fail To Accelerate problems	1

Car Accelerates On Its Own Problems of GMC Terrain

1 Car Accelerates On Its Own problem of the 2015 GMC Terrain

2 Car Accelerates On Its Own problem of the 2012 GMC Terrain

3 Car Accelerates On Its Own problem of the 2010 GMC Terrain

Other Common Vehicle Speed Control related problems of GMC Terrain