NHTSA Complaint #10496949 — 2003 CHEVROLET IMPALA

ENGINE ACCELERATES TO 3,000 RPM DURING WARM UP (SOMETIMES). USUALLY OCCURS ABOUT FIVE MINUTES AFTER COLD START. HAS LASTED 10 TO 15 MINUTES WHILE DRIVING. HAS NOT REPEATED DURING SAME DAY AND NOT HAPPEN AGAIN FOR DAYS OR WEEKS DURING THE PAST FIVE MONTHS. REPLACED ECM (COMPUTER), IAC (IDLE AIR CONTROL), COOLANT TEMP. SENSOR AND CLEANED THROTTLE BODY. DEALER CANNOT SUGGEST SOLUTION. UNABLE TO GET CAR TO DEALER WHILE PROBLEM IS HAPPENING. SCANNED FOR DTCS MULTIPLE TIMES, NONE. CONTROLLING SPEED WITH BRAKE IS NOT A GOOD SOLUTION. SAFETY HAZARD! *TR THE CONSUMER STATED WHEN THE BODY CONTROL MODULE FAILED, THE KEY FOB WOULD NOT WORK, THE ENGINE WOULD NOT START, THE INTERIOR LIGHTS WOULD NOT COME ON AND THE HEAD LIGHT WOULD NOT TURN OFF. THE CONSUMER HAD TO DISCONNECT THE BATTERY, IN ORDER TO TURN THE HEAD LIGHTS OFF. AFTER RECONNECTING THE BATTERY, EVERYTHING RETURNED TO NORMAL. THE BCM WAS REPLACED. UPDATED 03/19/13