I have had issues with the transmission and power of the car for over two years. i have contacted gmc and have followed everything that gmc have requested for me to do with a vehicle. i have taken the car to four different dealerships, have had everything done with it from flushing it three to four times and have had torque converter replaced the control valve body replace. recall for the brake pedal was also done. after everything the car is in worst condition at the moment.