Gm has not been able to figure out my car. it has been in three times for an eltrical issue. the car revs up and speeds up to 55 miles per hour on its own. has no power steering. reduced engine power. throwing 47 codes. no communication between transmission and computer. stability track turns off. doors and auto shut off turn off and on when this occurs.
When decelerating using braking and in hybrid mode the vehicel surges ahead when the hybrid system disengages. this causes the vehicle to accelerate and prevents stopping. high potential to hit the vehicle in front or person if at a crosswalk. chevrolet dealer iin avon ct, was unable to find cause with two visits.