REDUCED POWER INDICATOR ON INFORMATION CENTER COMES ON INTERMITTENTLY, WHEN IT DOES, VEHICLES GOES INTO DEFAULT MODE & CAN GO MAX 30 MPH (VERY DANGEROUS, WAS ALMOST REAR ENDED). NEVER KNOW WHEN IT MIGHT HAPPEN. YOU CAN PULL OVER SHUT ENGINE OFF SIT FOR A LITTLE WHILE & IT WILL START UP & RUN FINE UNTIL THE NEXT TIME THE REDUCED POWER LIGHT COMES ON. HAVE HAD IT @ SEVERAL SHOPS & REPLACED THROTTLE SENSOR, TRACED WIRES, REPLACED GROUNDS, INSPECTED HARNESS BUT DOESN'T SEEM TO HELP. I SEE ON THE ONLINE MESSAGE BOARDS THERE IS A LOT OF PROBLEMS THAT GM CAN'T SEEM TO FIND A FIX FOR. IT IS VERY DANGEROUS, SOMEONE IS GOING TO GET KILLED. *TR