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2003 GMC GMC Truck

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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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

Limited mileage data: 14 of 18 reports include usable mileage. There isn’t enough coverage to show a useful chart.

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.

  • Power Train. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports0 fire reports0 injury reports

Engine And Engine Cooling complaints

3 reports
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70,000 miles · Jan 19, 2011
Engine And Engine CoolingPower TrainService Brakes, Hydraulic

BRAKE LINES, TRANSMISSION LINES AND ENGINE COOLANT LINES ALL FAILING ON 2003 GMC 2500 HD SIERRA AS WELL AS ON 2004 CHEVY SILVERADO HD 3500. THESE PROBLEMS HAVE CAUSED NUMEROUS AMOUNTS OF TIME TO REPAIR AND REPLACE, AND TODAY THERE WAS A CATASTROPHIC BRAKE FAILURE ON THE 2003 HD GMC WHICH ALMOST RESULTED IN A DEADLY ACCIDENT.…

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BRAKE LINES, TRANSMISSION LINES AND ENGINE COOLANT LINES ALL FAILING ON 2003 GMC 2500 HD SIERRA AS WELL AS ON 2004 CHEVY SILVERADO HD 3500. THESE PROBLEMS HAVE CAUSED NUMEROUS AMOUNTS OF TIME TO REPAIR AND REPLACE, AND TODAY THERE WAS A CATASTROPHIC BRAKE FAILURE ON THE 2003 HD GMC WHICH ALMOST RESULTED IN A DEADLY ACCIDENT. THESE LINES SHOULD NOT HAVE RUSTED THEY WAY THEY ARE ESPECIALLY ON TWO (2) DIFFERENT VEHICLES FROM THE SAME MANUFACTURER. THESE VEHICLES WERE PRODUCED WITH INADEQUATE PARTS FOR ALL LINES ON THE UNDERSIDE OF VEHICLE. THERE SHOULD NOT BE 1,000 PLUS COMPLAINTS FROM CONSUMERS REGARDING THE RUSTING OF THESE COMPONENTS, OF WHICH HAVE CAUSED SEVERAL MAJOR AND LIFE SAFETY ISSUES. THE BRAKE LINES ARE AN INTEGRAL PART OF ANY VEHICLE AND TO HAVE THEM RUST THRU TO THE DEGREE OF ALL THE COMPLAINTS THERE IS OBVIOUSLY AN ISSUE WITH THE COMPONENT THE MANUFACTURER INSTALLED ON THESE VEHICLES. BETWEEN OUR 2003 AND 2004 GMC AND CHEVY TRUCKS RESPECTIVELY, WE HAVE REPLACED ALL OF THE TRANSMISSION COOLANT LINES IN BOTH VEHICLES, OIL ENGINE LINE IN 1 VEHICLE, READY TO CHANGE IN OTHER VEHICLE DUE TO RUST, AND NOW BRAKE LINES IN THE 2003 AND WILL NEED TO REPLACE IN 2004 DUE TO RUST AS WELL. THE ENTIRE UNDERSIDE COMPONENTS ARE COMPLETELY RUSTED THROUGH. IN ADDITION, THE STRAPS THAT HOLD THE FUEL TANK ARE ALSO NEEDING TO BE REPLACED DUE TO RUST. *TR

NHTSA ODI #10377916

40,000 miles · Oct 19, 2005
Engine And Engine Cooling

I NOTICED SINCE I BOUGHT MY 2003 GMC ENVOY THAT THE MOTOR WOULD RACE IN THE AM UPON STARTING. I TOOK THIS AS NORMAL UNTIL THE RACING NEVER STOPPED ONE DAY. I TOOK IT TO MY LOCAL GM DEALER AND THEY INFORMED ME THE FAN CLUTCH HAD FAILED AND REPAIRED IT FOR OVER 700$. UPON RESEARCH LATER ON THIS PART I NOTICED PEOPLE SAYING THESE A…

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I NOTICED SINCE I BOUGHT MY 2003 GMC ENVOY THAT THE MOTOR WOULD RACE IN THE AM UPON STARTING. I TOOK THIS AS NORMAL UNTIL THE RACING NEVER STOPPED ONE DAY. I TOOK IT TO MY LOCAL GM DEALER AND THEY INFORMED ME THE FAN CLUTCH HAD FAILED AND REPAIRED IT FOR OVER 700$. UPON RESEARCH LATER ON THIS PART I NOTICED PEOPLE SAYING THESE ARE FAILING AT A REGULAR BASIS. NOW, I'M NOT A MECHANIC, BUT I THINK HAD I NOT THE KNOWLEDGE I DO OF AUTOMOBILES, I WOULD HAVE CONTINUED TO DRIVE AND POSSIBLY COULD HAVE HAD A MAJOR ENGINE FAILURE OF SOME SORTS. THIS COULD HAVE RESULTED IN A SERIOUS INCIDENT ON THE ROADS. MY VEHICLE HAD ONLY 40,000 MILES ON IT. NOT MANY, CONSIDERING THE IMPORTANT OF OPERATION OF THIS PART. *NM

NHTSA ODI #10140186

300 miles · Oct 13, 2003
Engine And Engine CoolingPower Train

MISSING AND THEY SEEM NOT ABLE TO FIX IT SOME TIMES IT SHIFTS HARD OTHER TIMES IT BACKFIRES IT HAS BEEN IN THE SHOP TWICE ALL THEY CAN SAY IS THE COMPUTER SHOWS NOTHING AND THAT HOW THE ENGINE RUNS AND THAT IS UNACPECTABLE TO ME FOR A NEW TRUCK. *LA

NHTSA ODI #10041693

Official recalls

0

No 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

0

No exact-year investigations in this snapshot.