One problem related to engine has been reported for the 2005 Buick Rainier. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Buick Rainier based on all problems reported for the 2005 Rainier.
I was third in line waiting to pull out of a parking lot in peoria, az in my 2005 Buick Rainier. My foot was resting on the brake pedal. All of the sudden the car revved up and surged forward (from a standing start) with enough force to crash into the car in front of me and pushing that car in to the one in front of it--all three cars were severely damaged.