Problems · by component
2003 Chevrolet Impala engine problems
88 owner complaints to NHTSA about the 2003 Chevrolet Impala cite engine, 12% of all 722 complaints for this model year.
Complaints
88
12% of all complaints
Crashes
1
Reported by owners
Fires
20
Reported by owners
Injuries
1
Reported by owners
What owners say about the engine
Verbatim from NHTSA complaints, newest first
“Hey my name is [XXX] I recently took my Chevy impala for repairs they told me I need more repairs done I’m like cool my bottom of my car is rusted n my struts are bad n my oil pump n other stuff is not working as well I’m when I gave Chevy a call ball they took my they manager not to bring the car back I’m kinda upset bout this whole thing idk cause they had to fix my head gasket for free but I need help getting these thing fixes.”
“VEHICLE SHUTS OFF WHEN MOVING,TURNING OR STOPPED AT A TRAFFIC LIGHT. BY SWITCHING TO NEUTRAL, THE ENGINE MAY START AFTER 1 OR MORE TRIES. SO FAR THE FAILURES HAVE BEEN ON CITY STREETS AND HIGHWAYS. BUT NOT INTERSTATES. THE FAILURES ARE MANY BUT UNPREDICTABLE.”
“I JUST RECENTLY BOUGHT THIS VEHICLE 03/11/20 AND IT RAN GREAT TILL YESTERDAY WHEN THE INTAKE MANIFOLD EXPLODED AND CAUGHT FIRE TO THE ENGINE FROM THE FUEL LINES MELTED THIS HAPPENED WHEN I WAS GETTING A JUMP. IT SAYS THERE ARE NO RECALLS PENDING IT IS THE 3.8L AND IT LOOKED ORIGINAL ALL THE PARTS DID CAN YOU PLEASE HELP ME OUT”
“THE INCIDENT HAPPENED THIS MORNING AS I WAS LEAVING FOR WORK. MY CAR WAS PARKED IN OUR DRIVEWAY AND HAD NOT BEEN DRIVEN IN 2 DAYS. I GOT IN THE VEHICLE AND PUT THE KEY IN THE IGNITION AND AS SOON AS I TURNED IT TO START THERE WAS A LOUD BANG THAT SOUNDED LIKE A GUNSHOT WHICH I THOUGHT WAS A BACKFIRE. THE ENTIRE PLASTIC INTAKE MANIFOLD GASKET HAD EXPLODED INTO PIECES AND WHITE SMOKE BEGAN TO RISE FROM UNDER THE HOOD. WHEN I OPENED THE HOOD AND THE SMOKE CLEARED I BEGAN TO ASSESS THE ISSUE, I NOTICED THE MANIFOLD GASKET COVER HAD BEEN BLOWN COMPLETELY OFF AND THE MANIFOLD ITSELF WAS IN PIECES. I'VE DONE SOME RESEARCH AND THIS SEEMS TO BE A COMMON BUT UNCOMMON THING AMONG EARLY 2000'S GM VEHICLES.”
“RECALL ID 240424 RECEIVED THIS FROM CREDIT KARMA. CURRENTLY OUR CAR IS HAVING OVERHEATING ISSUES. ENGINE COOLING ISSUES,EXHAUST MANIFOLD/HEADER/MUFFLER/TAILPIPE, OIL LEAKING ON TO MY EXHAUST I'M AFRAID TO DRIVE IT, AFRAID IT MAY CATCH FIRE.”
“COOLANT SYSTEM HAS BEEN AN ONGOING PROBLEM WITH THE VEHICLE. AFTER REFILLING COOLANT AND OIL, IT WAS DISCOVERED THAT OIL AND COOLANT WERE DRIPPING UNDERNEATH THE CAR. ACCORDING TO A GM REPRESENTATIVE, THERE ARE SERVICE BULLETINS OUT FOR THIS YEAR MAKE AND MODEL, BUT I'VE BEEN TOLD MY VIN IS NOT ONE OF THEM. IT HAS ALL THE SAME SYMPTOMS DESCRIBED IN OTHER BULLETINS. I'M NOT SURE HOW/WHY THIS VIN ISN'T INCLUDED WHEN THE SAME SYMPTOMS EXIST.”
Showing 6 of 88 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.