ON APRIL 9, 2003 THE CONSUMER WAS BACKING OUT OF THE DRIVEWAY WHEN THE VEHICLE ACCELERATED UP TO 28 MPH WITHOUT APPLYING PRESSURE TO THE ACCELERATOR PEDAL. THE VEHICLE CRASHED INTO SEVERAL OBJECTS BEFORE IT STOPPED. GMC SENT AN ENGINEER TO ASSESS THE PROBLEM WHICH COULD NOT BE DETERMINED AT THAT TIME. THE VEHICLE WAS TAKEN TO THE DEALER WHO STATED THE BODY CONTROL MODULE WAS DEFECTIVE. *JB