There are 50 owner-reported engine complaints for the 2003 Chevrolet Silveradoin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
In the middle of the taxiway, while I was traveling my truck turned off while it was running and did not turn on again, putting my safety at risk by being in the middle of the taxiway, after several minutes the truck was able to be removed from the road, then I was able to investigate that I am not the only one that the same thing has happened to him, there is no Safety Recall in this regard, the GM fabric is aware of these cases but only wrote a TSB, it was diagnosed with the scanner and it gave code U1800, before the event there were no lights warning but after the event there is a check engine light on.
THE EXHAUST MANIFOLD BOLTS ARE BREAKING CREATING A FIRE HAZARD FROM THE HOT EXHAUST REACHING THE WIRING HARNESS, IT IS ALSO CREATING FUMES IN MY CAB. FIRST NOTED A NOISE A WEEK AGO, FOUND IT TO BE A EXHAUST LEAK AND THE LEAK HAS GRADUALLY GOTTEN WORSE. I AM UNABLE TO NOT DRIVE TO THE TRUCK DUE TO WORK.
THE CHECK ENGINE LIGHT IS ON AND THE OIL READER IS ALL THE WAY TO THE RIGHT AND WHILE DRIVING ON THE HIGHWAY THE REDUCED SPEED WARNING COMES ON THE ENGINE REDUCES SPEED AND CANNOT GO OVER 30 IN A 30 MILE RADIUS IT HAS DONE THIS TO ME 4 TIMES JUST THIS MORNING TO WORK. *TR
THE VEHICLE GOES INTO REDUCED ENGINE POWER WHILE DRIVING. THE ENGINE LOSES POWER TO ABOUT 20 MPH. IF DRIVING 70 MPH IT IS VERY DANGEROUS BECAUSE THE SUDDEN REDUCED ENGINE POWER WILL CAUSE A SEVERE ACCIDENT AND POSSIBLY KILL SOMEBODY. THIS HAS BEEN HAPPENING THE LAST FEW MONTHS. *TR
TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. WHILE DRIVING 70 MPH, THE CHECK ENGINE AND REDUCE ENGINE POWER WARNING INDICATORS ILLUMINATED. THE CONTACT STATED THAT TURNING THE VEHICLE OFF AND BACK ON RESOLVED THE ISSUE. THE VEHICLE WAS TAKEN TO THE DEALER TO BE DIAGNOSED. THE MECHANIC WAS UNABLE TO DUPLICATE THE FAILURE OR PRODUCE A FAULT CODE. THE CONTACT STATED THAT THE FAILURE RECURRED THREE TIMES. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 130,000.
TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 3500. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, THE ENGINE STALLED AND THERE WAS AN ABNORMAL NOISE. THE CONTACT WAS A CERTIFIED MECHANIC AND DIAGNOSED THAT THE FUEL INJECTOR FAILED. THE VEHICLE WAS RESTARTED AND THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 186,444.
THE EXHAUST MANIFOLD BOLTS ARE BREAKING ON THE 6.0 ENGINE. I THINK GM SHOULD DO THIS REPAIR SINCE I HAVE TALKED TO SEVERAL PEOPLE AND THIS IS VERY COMMON. IT IS A DESIGN DEFECT AS FAR AS I AM CONCERNED. I HAVE PUT UP WITH THIS AS IT STARTED AS A SMALL LEAK BUT IS GETTING WORSE.
I RECEIVED A REDUCED ENGINE POWER MESSAGE IN THE MIDDLE OF THE HIGHWAY I WAS TRAVELING AT 70 MPH AND WHEN IT CAME ON I COULDN'T TRAVEL MORE THAN 35 MPH. I WAS AFRAID FOR MY AND MY PASSENGERS LIFE AS WE WAS ON THE VERGE OF BEING HIT. I HAD THE CHECK ENGINE CODES CHECKED AND RECEIVED 7 DIFFERENT CODES. *TR
SEVERAL OF THE EXHAUST MANIFOLD BOLTS HAVE SNAPPED/SHEARED CAUSING EXHAUST LEAKS BETWEEN THE EXHAUST MANIFOLD AND EXHAUST PORT ON THE CYLINDER HEAD. I'M LEARNING THAT THIS IS A COMMON ISSUE THAT HAS GONE UNADDRESSED BY THE MANUFACTURER, BUT IS CLEARLY AN EMISSIONS AND FUNCTIONALITY ISSUE. PLEASE HELP IN HOLDING THE MANUFACTURER ACCOUNTABLE FOR THIS APPARENT MECHANICAL DEFECT. AS OF NOW, THEY OFFER NO ASSISTANCE IN REPAIRING THE ISSUE.
3 OF THE 6 EXHAUST MANIFOLD BOLTS HAVE BROKEN OFF ON LEFT SIDE ,2 ON THE RIGHT SIDE . I NOW HAVE THE EXHAUST TICKING SOUND AND ON OCCASION GET EXHAUST SMELL INSIDE CAB.I NOTICED THE FIRST BROKEN BOLT AT APPROX 55000 MILES. I NOW HAVE 112000 MILES. *TR
WHILE DRIVING DOWN BUSY ROAD, FOR NO REASON ENGINE POWER WAS SUDDENLY REDUCED WHICH COULD HAVE RESULTED IN A SERIOUS ACCIDENT. THIS HAS HAPPENED NUMEROUS TIMES. CALLED GM. NO RECALLS. THIS APPEARS TO BE AN INHERENT PROBLEM, NOT WEAR AND TEAR. THIS NEEDS TO BE ADDRESSED ASAP. *TR
ON MULTIPLE OCCASIONS THE VEHICLE HAS LOST POWER AT HIGHWAY SPEED AND THE ENGINE DIES. AFTER A FEW ATTEMPTS THE ENGINE RESTARTS AND OPERATES NORMALLY FOR AN UNPREDICTABLE INTERVAL. THIS HAS HAPPENED AT LEAST 10 TIMES. THE AUTHORIZED DEALER AND OTHER MECHANIC SHOPS HAVE NOT BEEN ABLE TO DIAGNOSE THE REASON FOR THE POWER FAILURE AS THEY HAVE NOT BEEN ABLE TO CAUSE IT TO DUPLICATE FAILURE WHEN THEY HAVE IT. THIS SUDDEN UNEXPECTED CONDITION IS VERY DANGEROUS WHEN IT OCCURS AND RENDERS THE VEHICLE UNUSABLE FOR ANYTHING OTHER THAN SHORT USAGE. *JS
TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO. THE CONTACT STATED THAT WHILE DRIVING AT 10 MPH, THE ENGINE STALLED WITHOUT WARNING. THE CONTACT WAS ABLE TO RESTART THE VEHICLE. THE FAILURE RECURRED SEVERAL TIMES AND ONLY WHEN MAKING A TURN. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE ISSUE. THE FAILURE MILEAGE WAS UNKNOWN.
TL* THE CONTACT OWNS 2003 CHEVROLET SILVERADO 1500 HD. THE CONTACT STATED THAT THE VEHICLE WAS MAKING A LOUD NOISE. AFTER INSPECTING THE VEHICLE HE NOTICED THAT FOUR OF THE EXHAUST HEADER MANIFOLD BOLT HEADS WERE MISSING. THE VEHICLE WAS TAKEN TO A DEALER. THE TECHNICIAN DIAGNOSE THAT THE EXHAUST MANIFOLDS AND BOLTS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAS BEEN NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 108,000.
MY 2003 CHEVY 2500 HD HAS AN EXHAUST MANIFOLD LEAK AND THIS IS AN ONGOING AND CHRONIC PROBLEM WITH THESE VEHICLES. I CAN SEE EVIDENCE OF HOT EXHAUST GASES LEAKING INTO THE ENGINE COMPARTMENT. *TR
5 OUT OF 8 EXHAUST MANIFOLD BOLTS ARE BROKEN ON THE PASSENGER SIDE OF VEHICLE AND 2 ON DRIVERS SIDE. I HAVE 120K MILES ON VEHICLE.
EXHAUST MANIFOLD BOLTS ARE BROKEN OFF IN BLOCK CAUSING EXHAUST LEAKS AND MANY OTHER PROBLEMS SUCH AS COMPUTER GETTING MIXED SIGNALS, O2 SENSOR AND WILL CAUSE MOTOR TO GO BAD IN TIME. *TR
THE BOLTS ARE BROKEN OFF IN THE MANIFOLD, AFTER CHECKING YOU-TUBE I FOUND THIS IS A PROBLEM THE GM HAS CHOSEN TO IGNORE. *TR
INSPECTION REVEALED THAT THE HEADS ON SEVERAL EXHAUST MANIFOLD BOLTS HAD BROKEN OFF. REPORTEDLY, THIS HAS BEEN A VERY COMMON DEFECT IN GM P/U TRUCKS AND SUV'S. FROM WHAT SOME TECHNICIANS HAVE SAID, GM USED SUBSTANDARD BOLTS FOR THIS APPLICATION, AND THAT THEY SIMPLY CANNOT BEAR UP UNDER THE HEAT FROM MANIFOLDS. MANY COMPLAINTS HAVE BEEN FILED BY VEHICLE OWNERS, BUT GM REFUSES TO ACKNOWLEDGE THE PROBLEM AND INSTITUTE A SAFETY RECALL FOR THIS POTENTIALLY SERIOUS SAFETY ISSUE. THE REPAIR OF THIS PROBLEM IS VERY COSTLY AND CAN CAUSE (AND HAS CAUSED) ADDITIONAL PROBLEMS WITH OTHER VEHICLE COMPONENTS. *TR
THIS IS THE 3RD TIME FOR INJECTORS IN OUR 2003 INJECTORS, NOT ONE INJECTOR...ALL 8. LUCKY THIS TIME JUST 4 HRS. FROM HOME AND SOMEBODY TO COME WITH TRAILER TO PICK US UP. SEEMS INJECTORS ONLY LAST 20 TP 30,000 MILES AND THEY ARE GONE CRACKED. GM WONT BACK THEM KNOWING THEY ARE A PROBLEM, AND $5,000.00 EACH TIME THEY ARE REPLACED. GM INJECTORS ARE JUNK OUT THE DOOR AND LEAVING HUNDREDS OF OWNERS STRANDED ON HIGHWAY AND SUFFERING TOW BILL AND REPAIRS, BUT THIS TIME WE ALMOST GOT REAR ENDED BY A SEMI TRUCK WHICH SLAMMED ON HIS BREAKS BLOWING A TIRE TO MISS US AND OUR HORSE TRAILER WITH 3 HORSES IN IT. THE ABF TRUCKER THAT ALMOST HIT US IN THE REAR PULLED OVER AS WE DID, AND TOLD HIM THE TRUCK JUST STALLED, WE PULLED THE HOOD AND DIESEL FUEL WAS ALL OVER THE PLACE AND HE STATED I CRACKED MY INJECTORS, THE LOCAL GM DEALER TOLD ME THE SAME THING AND THAT YEAR HAS PLENTY OF PROBLEMS WITH INJECTORS BUT GM WONT REPLACE THEM. WHAT'S IT GOING TO TAKE, ANOTHER BUS LOAD OF KIDS KILLED TO RESOLVE THIS ISSUE?? ANOTHER $5,000.00 DONATION TO GM. *TR
Showing 1–20 of 50 complaints
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 26, 2026