NHTSA Complaint #11154053 — 2008 CHEVROLET COBALT

WHEN DRIVING AT A CONSTANT RATE, WITH CONSTANT ACCELERATOR PRESSURE, BETWEEN APPROXIMATELY 25 TO 50 MPH, THE RPMS JUMP/FLUCTUATE CAUSING THE CAR TO LURCH AND HESITATE. THIS CAN BE A SAFETY HAZARD, PARTICULARLY IN ICY CONDITIONS. THE ONLY WAY TO AVOID THE HESITATION IS TO ACTIVELY ACCELERATE OR DECELERATE. THERE ARE NUMEROUS OWNERS THAT HAVE POSTED AN IDENTICAL ISSUE ON MESSAGE BOARDS AND HAVE STATED THAT THEIR VEHICLES HAD SIMILAR ISSUES THAT WERE REMEDIED BY SIMILAR REPAIR PROCESSES AND THAT CHEVROLET HAS ALTERED THE PROCESS USED TO MAKE REPLACEMENT PARTS AS THE INITIAL PARTS WERE DEFECTIVE. IN ADDITION TO BEING A SAFETY HAZARD, IT IS ALSO AN EXCESSIVE AND COSTLY BURDEN ON VEHICLE OWNERS. MY VEHICLE HAS ONLY 40,000 MILES ON IT AND HAS BEEN DOING THIS SINCE UNDER 35,000 MILES. IT CANNOT BE DOCUMENTED WITHOUT A VIDEO. THE RPMS JUMPING IS A CONSTANT AND UNRELENTING ISSUE WHEN DRIVING AT A CONSTANT RATE OF SPEED BETWEEN APPROXIMATELY 25-50 MPH.