2003 Chevrolet Impala Cruise Control Problems

Your accelerator pedal keeps getting stuck when you're at traffic lights and while driving. This can cause your car to unexpectedly speed up, which is a safety concern. The issue may be related to the accelerator mechanism or throttle control system, and you should have a mechanic inspect and repair the stuck pedal right away.

While using cruise control at 58 mph, you rapidly pressed the accelerate button 4-6 times in quick succession. Your car's engine responded as if you had floored the accelerator, the transmission downshifted, and the car accelerated to 70+ mph and kept climbing past 85 mph with the throttle wide open. Pressing the brake pedal and turning off cruise control didn't stop the acceleration. You had to shift to neutral and turn off the ignition to regain control. When you restarted the engine, it revved out of control again until you disconnected the battery for several minutes. The throttle body appeared to be in the idle position despite the wide-open throttle behavior, suggesting an electronic control issue rather than a mechanical cable problem. The fix will likely require a diagnostic scan of the engine control computer and possibly a software update or replacement of the throttle control module.

ABS, TRACTION, AND BREAK LIGHTS COME ON........ THEN WHEN I PUSH ON THE GAS PADDLE ITS OFTEN LIKE THE BRAKES WANT TO LOCK UP , WITH A SCRUBBING SOUND.... ALSO WHEN I PUSH THE BREAK PADDLE DOWN IT OFTEN MAKES A SOUND AND THE BREAK PADDLE FEELS LIKE IT COMES BACK UP WITH THE BREAK STILL DOWN,.........BUT THEN WHEN I DRIVE LIKE 20-25 MILES THE LIGHTS GO OFF AND HARDLY COME ON UNTIL I STOP AGAIN

WHILST DRIVING DOWN THE ROADWAY THE THROTTLE BODY BECAME STUCK IN THE OPEN POSITION CAUSING THE VEHICLE TO INCREASE SPEED WITHOUT THE DRIVER BEING IN CONTROL OF THE VEHICLE WHICH COULD RESULT IN A SERIOUS ACCIDENT WITH OTHER VEHICLES ON THE ROADWAY

TL* THE CONTACT OWNS A 2003 CHEVROLET IMPALA. THE CONTACT STATED THE VEHICLE INCREASED SPEED VIOLENTLY ONCE THE BRAKE PEDAL WAS RELEASED. THE ACCELERATOR PEDAL WAS NOT DEPRESSED. THE CONTACT PULLED OVER, SHUT THE IGNITION OFF AND RESTARTED THE VEHICLE, BUT THE FAILURE PERSISTED. THE FAILURE RECURRED NUMEROUS TIMES. THE CONTACT WAS A MECHANIC AND STATED THAT THE THROTTLE POSITION SENSOR NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 139,000. UPDATED 1/12/16 *CN

THERE ARE 3 RECALLS I HAVE FOUND THAT POSSIBLY ARE EFFECTING MY 2003 IMPALA BUT BECAUSE MY SPECIFIC VIN # DOESN'T FALL UNDER ANY OF THESE GM IS REFUSING TO FIX THESE PROBLEMS. 1)THE BODY CONTROL MODULE NEEDS TO BE RESET. APPARENTLY WHEN IT GOES OUT THE CRUISE CONTROL DISENGAGES.....AND MY CRUISE CONTROL LIGHT IS ON BUT WON'T ENGAGE. PLUS MY MECHANIC SAYS THE BODY CONTROL MODULE ALSO IS WHAT IS COULD BE CAUSING MY HEATER FAN TO NOT WORK NOR MY INFORMATION DISPLAY TO WORK. BUT LOW AND BEHOLD WHEN THE CRUISE CONTROL LIGHT GOES OFF THEY BOTH WORK 2) THERE IS A RECALL STATING DROPS OF ENGINE OIL MAY LEAK ON EXHAUST MANIFOLD WITH HARD BRAKING AND I SOMETIMES SMELL OIL BURNING AFTER I DRIVE. IF IT WAS MY ACTUAL ENGINE LEAKING OIL I WOULD SMELL IT ALL THE TIME BUT I DON'T IT'S JUST AFTER I DRIVE CERTAIN PLACES THAT ARE VERY CONGESTED AND I BRAKE A LOT 3) THERE IS A FUEL VAPOR LEAK FROM THE GAS TANK WHICH IS BELIEVED TO BE CAUSING MY CHECK ENGINE LIGHT TO COME ON. IT THROWS THE CODE STATING I NEED TO POSSIBLE REPLACE THE GAS CAP (WHICH I HAVE DONE) AND ONLY COMES ON AFTER I HAVE PUT GAS IN THE CAR. I'M ALITTLE CONCERNED AND APPLAUD THAT JUST BECAUSE MY VIN # DOESN'T SHOW THESE RECALLS BUT IMPALAS ARE HAVING THESE RECALLS THAT GM WON'T FIX THESE PROBLEMS. *TR

I WAS DRIVING ON THE BACK ROADS AT THE SPEED LIMIT OF 55MPH WHEN THE CAR STARTED TO JERK VIOLENTLY. I DIDN'T KNOW WHAT WAS GOING ON SO I LET OFF THE GAS AND HIT THE BRAKES A LITTLE. I WAS ABLE TO COME TO A STOP SAFELY, BUT THE JERKING WAS DANGEROUS AS IT PROPELLED ME INTO THE ONCOMING TRAFFIC WHEN I WAS ON A CURVE. I DON'T FEEL SAFE DRIVING THE CAR NOW. THE CAR SHOWS NO CODES AND NO WARNING SIGNALS. I THINK IT HAS SOMETHING TO DO WITH THE TRANSMISSION, BUT I AM NOT SURE. I READ MANY OTHERS WITH TRANSMISSION PROBLEMS AND I THINK THIS IS MORE DANGEROUS THAN PEOPLE THINK AND IT SHOULD BE RECALLED IF ITS A KNOWN PROBLEM. I DON'T KNOW WHAT TO DO. *TR

ANTI-LOCKING BRAKING SYSTEM, TRACTION CONTROL, AND VSA LIGHT COMES ON UNDER NORMAL DRIVING CONDITIONS. ANTI-LOCK SYSTEM ENGAGES AND PULSATES WHEN THE BRAKES ARE APPLIED AT VARIOUS SPEEDS AND ALSO THE VEHICLE DOESN'T' ACCELERATE IF DEPRESSING THE ACCELERATOR. THIS COULD OR WILL CAUSE A SERIOUS ACCIDENT IF THE SYSTEM IS NOT FIXED IMMEDIATELY. SUSPECT THE WHEEL SPEED SENSOR WHICH IS BUILT INTO THE WHEEL HUB. I AM REQUESTING THIS ISSUE BE REPAIRED AND THE FACTORY EXPENSE SINCE THIS IS A SAFETY ISSUE AND A VERY WELL KNOW DOCUMENTED CASE. *TR

TL* THE CONTACT OWNS A 2003 CHEVROLET IMPALA. AFTER DRIVING FOR FIVE MINUTES THE ACCELERATOR PEDAL WILL STICK TO THE FLOOR. USUALLY AFTER REPEATED BRAKE APPLICATION THE PEDAL WILL RELEASE. THE DEALER WAS CONTACTED AND THEY STATED THAT THEY WOULD HAVE TO CLEAN OUT THE ACCELERATOR BOX. THE REPAIR COST OVER $100.00 AND IT TAKES BETWEEN 15 TO 20 MINUTES FOR COMPLETION. THEY CANNOT GUARANTEE THAT THE REPAIR WILL REMEDY THE FAILURE. NO REPAIRS HAVE BEEN MADE. THE FAILURE MILEAGE WAS 55000. THE CURRENT MILEAGE WAS 62000.

TL* THE CONTACT OWNS A 2003 CHEVROLET IMPALA. WHEN APPLYING PRESSURE TO THE ACCELERATOR PEDAL AT 30 MPH, THE VEHICLE WOULD NOT DECELERATE. AS A CONSEQUENCE HE CRASHED INTO THE WALL OF A NEARBY BUILDING. HE INJURED HIS LOWER BODY AND TORSO. THE VEHICLE HAS NOT BEEN DIAGNOSED BY THE DEALERSHIP. THE CURRENT AND FAILURE MILEAGES WERE 58000.

MY CRUISE CONTROL LIGHT GOES ON AND OFF WITHOUT ME PUSHING THE BUTTON ON THE STEERING WHEEL. IT WON'T WORK FOR THAT DAY OR LONGER, THEN IT WORKS AGAIN. JUST WONDERING IF IT IS THE FUSE OR THE MODULE. *TR

CRUISE CONTROL DISENGAGES ITSELF WHEN CLIMBING MODERATE RISES IN ROAD. *JB