There are 9 owner-reported body & structure complaints for the 2003 Chevrolet Impalain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
MY 2003 CHE IMP DEVELOPED A WATER LEAK FROM LOWER RIGHT HAND SIDE OF WINDSHIELD, COWLING AREA. WATER LEAKS ONTO RIGHT FRONT PASSENGER FLOOR. APPEARS TO BE COMING FROM CABIN FILOTER AREA, NOT SUSRE.
WHENEVER IT RAINS, THE FLOORBOARDS, IN MY 2003 IMPALA, ON THE PASSENGER SIDE OF MY CAR FLOOD. IT DOESN'T MATTER HOW LITTLE OR HOW MUCH IT RAINS, THE FLOORBOARDS ALWAYS FLOOD. THERE WAS ONE INSTANCE WHERE THE WATER WAS PAST MY ANKLES. THE WATER IS DRIPPING FROM UNDER THE GLOVE COMPARTMENT BOX AREA AND IT RUNS ALONG THE DOOR SEAL TO THE BACK PASSENGER SEAT. I HAVE BEEN TOLD FROM MY LOCAL CHEVY DEALERSHIP THAT IT IS POSSIBLE A BAD CABIN SEAL. AFTER FINALLY GETTING FED UP WITH THE SITUATION I LOOKED FOR A POSSIBLE SOLUTION ONLINE AND WHILE I DIDN'T FIND A SOLUTION I FOUND MANY OTHERS THAT HAVE THE SAME PROBLEM AS ME. THIS HAS BEEN AN ONGOING PROBLEM THAT HAS LASTED SINCE I BOUGHT THE CAR 2 YEARS AGO. *TR
PLASTIC DOOR HANDLE ON BOTH BACK DOORS HAVE BROKEN OFF, MANY OTHER OWNERS OF LIKE IMPALAS HAVE HAD THIS SAME PROBLEM!*TR
I DISCOVERED ACCIDENTALLY THAT MY 2003 CHEVROLET IMPALA HAS A DESIGN DEFECT THAT MAY CAUSE SOME HEALTH PROBLEMS AND POSSIBLE LEAD TO DEATH. IN THE RIGHT REAR QUARTER PANEL OF THE CAR IS A DEVICE THAT IS CALLED A BODY PRESSURE VALVE THAT VENTS CABIN PRESSURE. THE PROBLEM IS IT LETS SNOW AND RAIN IN THE STAGNANT WATER SITS IN YOUR FENDER AND IS A BREEDING GROWN FOR GERMS. THE DEALER WAS SHOCKED WHEN I BROUGHT IT IN AND ASKED ME WHAT MADE ME THINK TO REMOVE THE CARPET AND LOOK IN THE FENDER. ALL THEY COULD DO WAS TAKE THE WATER OUT. STANDING WATER IN A FENDER WILL CAUSE A RUST PROBLEM. I ASKED THEM WHAT COULD BE DONE AND THEY TOLD ME TO PUT A NEW VALVE IN. THAT WILL NOT CORRECT THE PROBLEM BECAUSE THE FLAP IS NOT AIR TIGHT AND IS VENTED WATER AND FUMES SUCH AS CARBON MONOXIDE CAN ENTER THE CAR THROUGH IT . THE EXHAUST IS ONLY 12 INCHES OR LESS FROM IT. THE OWNERS MANUAL STATES DO NOT RUN THE CAR WHEN SITTING STILL LETS ME KNOW THAT GM KNOWS ABOUT THIS PROBLEM . WE ALL HAVE BEEN TOLD NOT TO RUN CARS IN ENCLOSED BUILDINGS BUT THIS IS TOO MUCH. IF IDLING IN TRAFFIC ONE MUST BE ASTUTE ENOUGH TO KEEP THEIR VEHICLE FAN ON AND OUTSIDE AIR COMING INTO THE VEHICLE AT ALL TIMES SO NOT TO ALLOW THE CAR TO FILL UP WITH FUMES FROM THE TAIL PIPE THAT SITS BENEATH THE PRESSURE VALVE. WHAT A DUMB DESIGN. CAR WAS SERVICED ON 03/04/08 I WAS ALWAYS SPRAYING DEODORIZER IN THE TRUNK AND IT SMELLED LIKE A CESSPOOL AS FAR AS THE REST OF THIS REPORT GOES THE NUMBER OF FAILURES IS TOTAL FAILURE IT HAS NEVER WORKED AND COULD BE CONSTRUED TO BE CRIMINAL NEGLECT. *TR
MY BLACK IMPALA HAS CHIP IN THE PAINT. MY BLACK IMPALA HAS PLACES WHERE THE PAINT IS COMING OFF. HAVE NOT SEEN THIS PROBLEM ON OTHER PAINT COLORS. *TR
WHENEVER IT RAINS, THE FLOORBOARDS, IN MY 2003 IMPALA, ON THE PASSENGER SIDE OF MY CAR FLOOD. FOUND A SOLUTION FOR GM'S POOR DESIGN. THE COWLING GASKET ABOVE THE CABIN FILTER SHOULD BE REPLACED AND GLUED IN POSITION WITH RTV. THIS SHOULD SOLVE PROBLEM. ALSO MAKE SURE DRAINHOLES AROUND CABIN FILTER ARE CLEAR OF ALL DEBRIS. *TR
FAILING PAINT ON FRONT AND REAR BUMPERS OF WHITE IMPALAS. ON ALL WHITE IMPALAS FROM MY AREA THE PAINT IS FLAKING OFF OF THE BUMPERS, BOTH FRONT AND REAR, VERTICALLY IN CHUNKS ALONG THE CURVES TOWARD EITHER SIDE OF THE CAR. THIS ONLY APPEARS TO BE A CONDITION WITH THE WHITE MODELS, AND LOOKS LIKE THERE WAS NOT ENOUGH FLEX ADDED TO THE PAINT BEFORE APPLICATION. *TR
WHILE DRIVING, THE CONSUMER'S FOOT SLIPPED OFF THE GAS PEDAL BECAUSE THE GAS PEDAL WAS TOO SHORT. THE DEALER WAS NOTIFIED. *AK THERE WASN'T GOOD ARM ROOM FOR STEERING. THE DEALER STATED THEY WERE UNABLE TO DO ANYTHING ABOUT THE SIZE OF THE PEDAL. *SCC *JB
CONSUMER EXPERIENCED EXTREME STATIC ELECTRICITY WHEN ENTERING THE VEHICLE. THE DEALER STATED THAT THIS IS COMMON DURING COOL DRY CONDITIONS. *NLM
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026