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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

Power Train complaints

6 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

114,200 miles · Dec 5, 2007
Power Train

TRANSFER CASE HAS HOLES IN IT & FLUID LEAKED OUT. *TR

NHTSA ODI #10210872

85,000 miles · Oct 23, 2007
Power Train

I PURCHASED A 2003 GMC SONOMA FOR MY SON, IN JULY OF 2003 AND WE HAVE HAD NOTHING BUT PROBLEMS WITH IT. WE WERE TOLD YESTERDAY WE NEED A NEW TRANSMISSION AND WAS QUOTED A PRICE FROM $1,500.00-$2,500.00. WE ARE GOING TO PAY IT BECAUSE WE STILL ARE PAYING A PAYMENT ON IT AND CANNOT AFFORD TO GET ANOTHER VEHICLE. MY QUESTION IS …

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I PURCHASED A 2003 GMC SONOMA FOR MY SON, IN JULY OF 2003 AND WE HAVE HAD NOTHING BUT PROBLEMS WITH IT. WE WERE TOLD YESTERDAY WE NEED A NEW TRANSMISSION AND WAS QUOTED A PRICE FROM $1,500.00-$2,500.00. WE ARE GOING TO PAY IT BECAUSE WE STILL ARE PAYING A PAYMENT ON IT AND CANNOT AFFORD TO GET ANOTHER VEHICLE. MY QUESTION IS ISN'T GENERAL MOTORS RESPONSIBLE FOR THE PRODUCTS THEY SELL. I DO NOT HAVE AN AMERICAN VEHICLE AND I WOULD LIKE TO BUY AMERICAN BUT THEY DO NOT STAND BEHIND THEIR PRODUCTS. *JB

NHTSA ODI #10206696

33,000 miles · Nov 28, 2006
Power Train

03 GMC SIERRA GOT USED IN AUG 06 WITH 31000 MILES NOW HAS 36000 MILES AND TRANSMISSION HAS CLUNK BETWEEN 2 &3 GEARS FROM ALL THE RESEARCH I HAVE DONE IT SEEMS THIS IS HAPPENING TO LOTS OF PEOPLE I WILL BRING THIS TO GM`S ATTENTION BECAUSE IT STILL UNDER GMC CERTIFIED WARRANTY BUT I DON`T THINK IT WILL GET ME ANYWHERE PLEASE HELP…

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03 GMC SIERRA GOT USED IN AUG 06 WITH 31000 MILES NOW HAS 36000 MILES AND TRANSMISSION HAS CLUNK BETWEEN 2 &3 GEARS FROM ALL THE RESEARCH I HAVE DONE IT SEEMS THIS IS HAPPENING TO LOTS OF PEOPLE I WILL BRING THIS TO GM`S ATTENTION BECAUSE IT STILL UNDER GMC CERTIFIED WARRANTY BUT I DON`T THINK IT WILL GET ME ANYWHERE PLEASE HELP. *NM

NHTSA ODI #10174628

8,977 miles · Dec 12, 2005
Power Train

LOUD CLUNK IN DRIVETRAIN WHEN TRANSMISSION UPSHIFTS 2-3 AND DOWNSHIFTS 3-2. VEHICLE IS 2003 GMC PICK-UP TRUCK 4X4. DEALER #1 REPLACED DRIVESHAFT. NO CHANGE. DEALER #2 DIAGNOSED THE CLUNK AS A MOMENTARY TORQUE REVERSAL OF THE OUTPUT SHAFT WHEN THE CLUTCH IS APPLIED AND THE 2-4 BAND RELEASED. SEE GM INFORMATION BULLETIN…

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LOUD CLUNK IN DRIVETRAIN WHEN TRANSMISSION UPSHIFTS 2-3 AND DOWNSHIFTS 3-2. VEHICLE IS 2003 GMC PICK-UP TRUCK 4X4. DEALER #1 REPLACED DRIVESHAFT. NO CHANGE. DEALER #2 DIAGNOSED THE CLUNK AS A MOMENTARY TORQUE REVERSAL OF THE OUTPUT SHAFT WHEN THE CLUTCH IS APPLIED AND THE 2-4 BAND RELEASED. SEE GM INFORMATION BULLETIN #01-07-30-042C (SEPT. 27, 2005) GM SAYS THIS IS NORMAL AND NO REPAIRS SHOULD BE ATTEMPTED. THIS CONSTANT CLUNKING IS NOT NORMAL AND IS AGGRAVATING TO THE DRIVER AND OWNER. A NEW VEHICLE SHOULD BE FREE OF MECHANICAL DEFECT AS THE WARRANTY STATES. THIS CONDITION MAY BE WORSE IN 4X4 VEHICLES DUE TO TOLERANCES IN THE TRANSFER CASE. GM WILL NOT RECTIFY THIS DEFECT WHILE UNDER ORIGINAL WARRANTY. IT IS THEIR DUTY TO SELL A DEFECT FREE VEHICLE. I HAVE DISCUSSED THIS PROBLEM WITH GM, BBB, A TRUCK DEALER AND A TRANSMISSION REPAIR SHOP. MY CONCLUSION IS THAT A REPROGRAMMING OF THE BANDS IN THE TRANSMISSION CASE WILL CORRECT THIS DEFECT. GM IS NOT WILLING TO MAKE THIS REMEDY AVAILABLE TO THE VEHICLE. MY EXPECTATION IS THAT THE VEHICLE SHOULD BE DEFECT FREE DURING WARRANTY PERIOD. THE STANDOFF! THE FEDERAL GOVERNMENT SHOULD PROTECT THE UNWITTING BUYER FROM THE FAILURES OF AUTO MAKERS TO WARRANT A DEFECT FREE PRODUCT AS THEY CLAIM WHEN THEY SELL THE PRODUCT. OTHERWISE, IT IS A GROSS MISREPRESENTATION OF A PROMISE AND FRAUD. *JB

NHTSA ODI #10144992

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.