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
2003 Chevrolet Silverado 1500 Hd
Owner reports · Recalls · Investigations
More warning signs than most Silverado 1500 Hd years
Owner complaints for the 2003 Chevrolet Silverado 1500 Hd are substantially higher than the model-year median of 22.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 1500 Hd 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
93 reports with mileage · 8 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 30 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 27 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes, Hydraulic. Review the 21 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
7 reportsTL* 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…
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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.
GM 2004 1500HD TRUCK: GM CAN'T FIX THE REDUCE ENGINE POWER PROBLEM. THE CODE THAT THEY CAN'T FIX KEEPS SAYING ITS THE THROTTLE BODY SENSOR. I HAVE HAD GM DEALER TRY TO FIX WHAT THIS CODE IS TELLING THEM BUT STILL HAVE THE PROBLEM. BASED OFF RESEARCH THIS IS A MAJOR PROBLEM WITH MANY OTHER GM TRUCK OWNERS. WHEN THIS SENSOR LI…
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GM 2004 1500HD TRUCK: GM CAN'T FIX THE REDUCE ENGINE POWER PROBLEM. THE CODE THAT THEY CAN'T FIX KEEPS SAYING ITS THE THROTTLE BODY SENSOR. I HAVE HAD GM DEALER TRY TO FIX WHAT THIS CODE IS TELLING THEM BUT STILL HAVE THE PROBLEM. BASED OFF RESEARCH THIS IS A MAJOR PROBLEM WITH MANY OTHER GM TRUCK OWNERS. WHEN THIS SENSOR LIGHT COMES ON & DISPLAYS REDUCE ENGINE POWER THE TRUCK BASICALLY SHUTS DOWN. I'VE HAD THIS HAPPEN RUNNING IN THE LEFT LANE OF A MAJOR HWY AND ALMOST GOT RUN OVER. PLEASE HAVE GM DO SOMETHING ABOUT THIS PROBLEM BECAUSE I'M SURE IF IT HASN'T KILLED ANYONE YET IT WILL. ONLY THING DIFFERENT BETWEEN THE TOYOTA PROBLEM AND THE GM PROBLEM IS ONE SPEEDS UP AND THE OTHER SLOWS DOWN TO 20MPH. AS I HAVE STATED THIS PROBLEM HAPPENS A LOT SO DON'T PAY ATTENTION TO THE INCIDENT DATE I HAD TO ENTER. *TR
AUGUST 2007 PURCHASED 2003 CHEVROLET SILVERADO 41,000 MILES FOUND OUT AFTER PURCHASE MANIFOLD BOLTS ON DRIVERS SIDE AND PASSENGER SIDE WERE BROKE. TOOK VEHICLE INTO CHEVROLET DEALER HAD LEFT SIDE MANIFOLD REPLACED AND BOUGHT UP GRADE BOLTS FROM GM. AS OF FEBRUARY 2, 2011 MANIFOLD BOLTS ARE BREAKING AGAIN CAUSING MANIFOLD LEAK …
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AUGUST 2007 PURCHASED 2003 CHEVROLET SILVERADO 41,000 MILES FOUND OUT AFTER PURCHASE MANIFOLD BOLTS ON DRIVERS SIDE AND PASSENGER SIDE WERE BROKE. TOOK VEHICLE INTO CHEVROLET DEALER HAD LEFT SIDE MANIFOLD REPLACED AND BOUGHT UP GRADE BOLTS FROM GM. AS OF FEBRUARY 2, 2011 MANIFOLD BOLTS ARE BREAKING AGAIN CAUSING MANIFOLD LEAK WHICH IS A VIOLATION OF EMISSIONS AND ALSO CAN CAUSE A FIRE HAZARD IF THIS PROBLEM ISN'T ADDRESSED THAT GM HAS FAULTY MANIFOLDS SOMEONE MAY END UP SERIOUSLY INJURED. THE TRUCK NOW HAS 72,000 MILES ON IT DEALERSHIP WAS NOTIFIED OF THE SECOND PROBLEM AND NO HELP WAS GIVEN.
2003 CHEVROLET SILVERADO EXHAUST MANIFOLD BOLT BROKE. LESS THAN 100K MILES. COSTLY REPAIR TO HAVE THE BOLT DRILLED OUT AND REPLACE ALL BOLTS AND GASKET. EXHAUST LEAKS AND CAN HEAR TICKING NOISE FOR THE FIRST 10 MINUTES OR SO AFTER THE VEHICLE IS STARTED. ALSO CAUSES MY CHECK ENGINE LIGHT TO COME ON, PULLING ERROR CODES FOR OXYGE…
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2003 CHEVROLET SILVERADO EXHAUST MANIFOLD BOLT BROKE. LESS THAN 100K MILES. COSTLY REPAIR TO HAVE THE BOLT DRILLED OUT AND REPLACE ALL BOLTS AND GASKET. EXHAUST LEAKS AND CAN HEAR TICKING NOISE FOR THE FIRST 10 MINUTES OR SO AFTER THE VEHICLE IS STARTED. ALSO CAUSES MY CHECK ENGINE LIGHT TO COME ON, PULLING ERROR CODES FOR OXYGEN SENSORS. *TR
I WAS DRIVING ALONG THE ROAD THIS PAST WINTER AND A CAR SUDDENLY STOPPED IN FRONT OF ME...I HAD ABSOLUTELY NO BRAKES AND THANKFULLLY WAS ABLE TO GET AROUND THE CAR INTO THE OTHER LANE WITHOUT INJURY. THE BRAKE LINES WERE ALL CORRODED AND NEEDED TO BE REPLACED. THIS COULD HAVE BEEN A SERIOUS ACCIDENT HAD THERE BEEN VEHICLES IN TH…
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I WAS DRIVING ALONG THE ROAD THIS PAST WINTER AND A CAR SUDDENLY STOPPED IN FRONT OF ME...I HAD ABSOLUTELY NO BRAKES AND THANKFULLLY WAS ABLE TO GET AROUND THE CAR INTO THE OTHER LANE WITHOUT INJURY. THE BRAKE LINES WERE ALL CORRODED AND NEEDED TO BE REPLACED. THIS COULD HAVE BEEN A SERIOUS ACCIDENT HAD THERE BEEN VEHICLES IN THE OTHER LANE. IN ADDITION TO THIS THE SPEEDOMETER OFTEN STOPS WORKING AND IS REGISTERING AT THE WRONG SPEED. *TR
TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500 HD. WHILE DRIVING APPROXIMATELY 55 MPH, THE VEHICLE LOST COMPLETE POWER. UPON FURTHER INSPECTION, THE CONTACT NOTICED FLAMES UNDER THE HOOD OF THE VEHICLE. THE FIRE DEPARTMENT EXTINGUISHED THE FLAMES, BUT THE VEHICLE WAS COMPLETELY DESTROYED. THE CAUSE OF THE FAILURE WAS UN…
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TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500 HD. WHILE DRIVING APPROXIMATELY 55 MPH, THE VEHICLE LOST COMPLETE POWER. UPON FURTHER INSPECTION, THE CONTACT NOTICED FLAMES UNDER THE HOOD OF THE VEHICLE. THE FIRE DEPARTMENT EXTINGUISHED THE FLAMES, BUT THE VEHICLE WAS COMPLETELY DESTROYED. THE CAUSE OF THE FAILURE WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGES WERE 60,000.
Official recalls
0No recalls in this snapshot.
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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