COOLANT IS LEAKING, MECHANIC SAID IT IS OUR LOWER INTAKE MANIFOLD GASKET THAT HAS FAILED. ALSO HE SAYS TO FLUSH OUT THE DEX COOL BECAUSE IT IS A HORRIBLE COOLANT. *TR
2003 Chevrolet Malibu
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2003 Chevrolet Malibu do not stand out strongly from the model-year median of 310.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Malibu years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
429 reports with mileage · 140 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 289 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Vehicle Speed Control. Review the 85 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 47 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
41 reportsI HAVE A 2003 CHEVY MALIBU, THE COOLANT STARTED TO SLOWLY LEAK OUT, THEN PROCEEDED TO LEAK FASTER WITHIN A FEW WEEKS, WE COULDN'T SEE WHERE THE COOLANT WAS GOING. I CALLED MY OLDER BROTHER EVERY WEEKEND, AND HIS 2001 PONTIAC GRAND PRIX WAS IN THE SHOP GETTING A NEW ENGINE INSTALLED, HIS GRAND PRIX, AND MY CHEVY MALIBU HAVE THE …
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I HAVE A 2003 CHEVY MALIBU, THE COOLANT STARTED TO SLOWLY LEAK OUT, THEN PROCEEDED TO LEAK FASTER WITHIN A FEW WEEKS, WE COULDN'T SEE WHERE THE COOLANT WAS GOING. I CALLED MY OLDER BROTHER EVERY WEEKEND, AND HIS 2001 PONTIAC GRAND PRIX WAS IN THE SHOP GETTING A NEW ENGINE INSTALLED, HIS GRAND PRIX, AND MY CHEVY MALIBU HAVE THE SAME ENGINE, I ASKED WHAT HAPPENED, AND HE SAID THAT HIS COOLANT STARTED LEAKING, HE COULDN'T SEE WHERE IT WAS GOING SO HE TOOK IT INTO THE SHOP, AND THE MECHANIC TOLD HIM THAT A COMMON PROBLEM WITH THESE VEHICLES MADE BY GM WAS THAT THE LOWER INTAKE MANIFOLD GASKET IS FAULTY. I HAVE LOOKED IT UP ON LINE,AND THERE IS A CLASS ACTION LAW SUIT IN CANADA AGAINST GM FOR THIS PROBLEM, AS WELL MANY PEOPLE SAY (INCLUDING MY MECHANIC) THAT THE DEX COOL IS VERY BAD FOR YOU VEHICLE. ANYWAY, MY BROTHER GOT HIS CAR TO THE MECHANIC TOO LATE, AND AFTER SHELLING OUT 700 TO FIX THE LOWER INTAKE MANIFOLD GASKET, HE ENDED UP HAVING TO PAY 5900 TO REPLACE HIS 2001 GRAND PRIX ENGINE. AS IT TURNS OUT MY MALIBU HAD THE SAME PROBLEM WITH THE LOWER INTAKE MANIFOLD GASKET, WE HAVE YET TO REPLACE IT, IT IS WORTHLESS, THE MECHANIC WHO IS CHEVY CERTIFIED, SAID THAT THE COOLANT HAS GOTTEN INTO OUR OIL, AND THE ENGINE IS WORTHLESS, WE DON'T HAVE THE 5900 TO SHELL OUT FOR A NEW ENGINE. I HAVE CONTACTED GM TWICE, THE FIRST TIME I TALKED TO A REPRESENTATIVE ON THE PHONE, AND HE SAID THAT HE DOESN'T KNOW WHY THEY ARE NOT RECALLING THE GASKET, IT IS A KNOWN PROBLEM, BUT THEY AREN'T GOING TO RECALL IT, THE SECOND TIME I TALKED TO THEM THEY TOLD ME THAT THEY WILL NOT DISCUSS THE MATTER WITH ME ANY FURTHER. I AM A SINGLE MOM WITH THREE KIDS, AND A FULL TIME JOB, AND FULL TIME SCHOOL, I HAVE A CAR THAT WHEN I BOUGHT IT THE SALESMAN TALKED ME INTO, HE TOLD ME "A MALIBU WILL LAST YOU A VERY LONG TIME," AS IT SITS IN MY PARKING LOT WHILE I AM LEFT RIDING THE BUS, AND MAKING PAYMENTS ON A CAR THAT DOES NOT RUN, DUE TO A PROBLEM THAT GM KNOWS ABOUT. *JB
DT*: THE CONTACT STATED THE VEHICLE ENGINE HESITATED AND LOST ALL POWER AT VARIOUS SPEEDS UNDER NORMAL ROAD CONDITIONS. THE VEHICLE WAS TAKEN TO THE SERVICE DEALER, WHO COULD NOT IDENTIFY THE PROBLEM.
DT*: THE CONTACT STATED AT 75 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE COASTED TO THE SIDE OF THE ROAD AND AFTER A HALF AN HOUR, IT RESTARTED. THE DEALERSHIP WAS UNABLE TO DUPLICATE THE PROBLEM AND THERE ARE NO CODES ON THE COMPUTER.
VEHICLE EXPERIENCED SUDDEN STALLING AT VARIOUS SPEEDS. TOOK VEHICLE TO THE DEALER FOR CHECKUP, BUT THE CAUSE WAS UNDETERMINED AT THIS TIME.*AK
THERE WAS A DELAY AND OR LACK OF POWER WHEN PASSING. THE DELAY WAS IN BETWEEN ACCELERATION. *AK *SC
WHILE DRIVING 40 MPH ENGINE FAILED. AS RESULT, CONSUMER ENGAGED THE VEHICLE IN NEUTRAL AND COASTED TO THE SIDE OF THE ROAD. *AK
WHEN DRIVING UNDER NORMAL CONDITIONS THE IDLE STICKS. RPM FIRST TIME STUCK AT APPROX 2000 RPM, 2ND TIME WAS 3,000 RPM. ONLY WAY TO GET IDLE TO RELEASE IS TO TURN ENGINE OFF AND RE-START. DANGEROUS AS IT MAKES IT HARD TO JUDGE HOW MUCH PRESSURE TO APPLY TO BRAKE PEDAL TO STOP VEHICLE. *JB
CAR HAS STALLED NUMORUS TIMES IN TRAFFIC. AT CITY SPEEDS AND HIGHWAY SPEEDS, EVEN IN THE FAST LANE AT RUSH HOUR.HAVE YOU EVER SEEN A SEMI THAT IS TAILGATING TRY TO STOP AT SIXTY-FIVE IN YOUR REARVIEW MIRROR BECAUSE YOUR ENGINE JUST STALLED? I FEAR FOR MY LIFE EVERY TIME THE DEALER CALLS AND SAY'S COME PICK IT UP I THINK WE GOT I…
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CAR HAS STALLED NUMORUS TIMES IN TRAFFIC. AT CITY SPEEDS AND HIGHWAY SPEEDS, EVEN IN THE FAST LANE AT RUSH HOUR.HAVE YOU EVER SEEN A SEMI THAT IS TAILGATING TRY TO STOP AT SIXTY-FIVE IN YOUR REARVIEW MIRROR BECAUSE YOUR ENGINE JUST STALLED? I FEAR FOR MY LIFE EVERY TIME THE DEALER CALLS AND SAY'S COME PICK IT UP I THINK WE GOT IT FIXED? HOW CAN THEY SEND ME OUT WITH A VEHICLE THAT THEY DONT EVEN KNOW IF ITS FIXED? WHEN THEY CAN'T EVEN FIND OUT WHAT IS CAUSING IT TO HAPPEN? IT'S BEEN IN THE SHOP EIGHT TIMES FOR STALLING. THEY REPLACE A PART AND SEND ME OUT ON THE ROAD LIKE A TEST RAT HOPING THE BRAND NEW CAR I BOUGHT KEEPS RUNNING SO I DON'T DIE OR WORSE CAUSE SOMEONE ELSE TO. THEY HAVE CHECKED THE WIRING,COMPUTERS, ENGINE, EVEN DUPLICATED THE PROBLEM.HOW DO I EVER FEEL LIKE I CAN DRIVE THIS CAR SAFLEY. I HAVE NO CHOICE BECAUSE THE BIG CAR COMPANY DONT CARE FOR ME. IT'S SALES THEY CARE ABOUT. IT'S BEEN AT THE DEALERSHIP FOR SIX DAYS NOW, NO PROBLEM I'LL SEND MY PAYMENT IN EVEN THOUGH IT'S BEEN IN THE SHOP FOR ABOUT THIRTY DAYS THE LAST FOUR MONTHS.
BRAKES STARTED TO MAKE A RUBBING NOISE WHICH PROGRESSED TO A SQUEAKING NOISE. ALSO, BRAKE PEDAL WOULD GO DOWN TO THE FLOOR TO STOP THE VEHICLE. DEALER HAS REPLACED BRAKE PADS/FRONT ROTORS/ BRAKE BOOSTER/CALIPERS, AND BRAKE LINES, BUT THE PROBLEM STILL EXISTS. *AK THE FRONT DRIVER WINDOW FAILED TO ROLL UP, THE ENGINE LIGHT …
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BRAKES STARTED TO MAKE A RUBBING NOISE WHICH PROGRESSED TO A SQUEAKING NOISE. ALSO, BRAKE PEDAL WOULD GO DOWN TO THE FLOOR TO STOP THE VEHICLE. DEALER HAS REPLACED BRAKE PADS/FRONT ROTORS/ BRAKE BOOSTER/CALIPERS, AND BRAKE LINES, BUT THE PROBLEM STILL EXISTS. *AK THE FRONT DRIVER WINDOW FAILED TO ROLL UP, THE ENGINE LIGHT ILLUMINATED, THE A/C CONTROL WAS INOPERATIVE AND COOLING PROPERLY, THE VEHICLE PULLED TO THE RIGHT WHILE DRIVING DOWN THE ROAD, THE VEHICLE OVERHEATED. *JB *NLM
Official recalls
214V400000 · Electrical System:ignition
Jul 3, 2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) notified the agency on July 3, 2014, that they are recalling 5,877,718 model year 2000-2005 Chevrolet Impala and Monte Carlo, 1997-2003 Chevrolet Malibu, 2004-2005 Malibu Classic, 1999-2004 Oldsmobile Alero, 1998-2002 Oldsmobile Intrigue, 1999-2005 Pontiac Grand Am and 2004-2008 Pontiac Grand Prix vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
Consequence & remedy
Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Remedy: GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on September 9, 2014. GM's number for this recall is 14350.
04V528000 · Vehicle Speed Control:accelerator Pedal
Nov 1, 2004
CERTAIN PASSENGER VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 124, 'ACCELERATOR CONTROL SYSTEMS.' IN HOT AMBIENT CONDITIONS, THE ACCELERATOR PEDAL ARM MAY STICK AT THE ATTACHMENT TO THE BRACKET AND NOT RETURN TO THE ENGINE IDLE POSITION WHEN THE OPERATOR LIFTS HIS FOOT FROM THE ACCELERATOR PEDAL.
Consequence & remedy
Consequence: FAILURE TO RETURN TO IDLE COULD RESULT IN A VEHICLE CRASH.
Remedy: DEALERS WILL INSPECT THE ACCELERATOR PEDAL ARM AND REPLACE THE ACCELERATOR AND BRAKE PEDAL ASSEMBLY WITH A NEW ASSEMBLY, IF NECESSARY. THE RECALL BEGAN ON DECEMBER 20, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438, PONTIAC AT 1-800-620-7668, OR OLDSMOBILE AT 1-800-630-6537.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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