← New search

2003 GMC Sierra 2500

Owner reports · Recalls · Investigations

More warning signs than most Sierra 2500 years

Owner complaints for the 2003 GMC Sierra 2500 are substantially higher than the model-year median of 46.

About this comparison →

When problems were reported

Mileage at the reported incident

142 reports with mileage · 18 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.

  • Service Brakes, Hydraulic. Review the 43 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 36 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes. Review the 28 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

7 crash reports4 fire reports4 injury reports

Vehicle Speed Control complaints

4 reports
Clear category filter
217,000 miles · Feb 5, 2018
Vehicle Speed Control

COMPLAINT INVOLVES REDUCED POWER MODE WHILE DRIVING. THIS HAS BECOME A SAFETY CONCERN BECAUSE OF THE RAPID DROP IN SPEED WHILE DRIVING. IT IS UNSAFE TRYING TO EXIT TRAFFIC LANES WITH NO RESPONSE FROM THROTTLE PEDAL AND APPEARS TO BE A COMMON PROBLEM WITH DRIVE BY WIRE VEHICLES PRODUCED BY GENERAL MOTORS. VEHICLE HAS BEEN TO DEAL…

Read full complaint

COMPLAINT INVOLVES REDUCED POWER MODE WHILE DRIVING. THIS HAS BECOME A SAFETY CONCERN BECAUSE OF THE RAPID DROP IN SPEED WHILE DRIVING. IT IS UNSAFE TRYING TO EXIT TRAFFIC LANES WITH NO RESPONSE FROM THROTTLE PEDAL AND APPEARS TO BE A COMMON PROBLEM WITH DRIVE BY WIRE VEHICLES PRODUCED BY GENERAL MOTORS. VEHICLE HAS BEEN TO DEALERSHIP TWICE WITH NO RESOLUTION OF THE PROBLEM. THIS FAILURE HAS OCCURRED AT VARIOUS SPEEDS, TIMES OF DAY, TEMPERATURES ETC. IT WILL ENTER REDUCED POWER ONCE TO TWICE A DAY. THANK YOU FOR YOUR TIME.

NHTSA ODI #11066962

Mileage unknown · Mar 12, 2014
Vehicle Speed Control

ISSUE WITH THROTTLE BODY REDUCED ENGINE POWER WHEN DRIVING THROWS OUT CHECK ENGINE LIGHT. THOUSAND OF PEOPLE HAVE THIS SAME ISSUE MOST HAVE JUST STOPPED DRIVING THEIR VEHICLE LIKE I HAVE BECAUSE IT'S UNSAFE TO DRIVE. I HOPING NOT JUST FOR ME BUT EVERYONE OUT THERE WITH THIS SAME ISSUE TO GET A RECALL BEFORE IT KILLS SOMEONE. I H…

Read full complaint

ISSUE WITH THROTTLE BODY REDUCED ENGINE POWER WHEN DRIVING THROWS OUT CHECK ENGINE LIGHT. THOUSAND OF PEOPLE HAVE THIS SAME ISSUE MOST HAVE JUST STOPPED DRIVING THEIR VEHICLE LIKE I HAVE BECAUSE IT'S UNSAFE TO DRIVE. I HOPING NOT JUST FOR ME BUT EVERYONE OUT THERE WITH THIS SAME ISSUE TO GET A RECALL BEFORE IT KILLS SOMEONE. I HAVEN'T BEEN ABLE TO DRIVE MY TRUCK IN THREE YEARS. *TR

NHTSA ODI #10568834

124,000 miles · Sep 18, 2013
EngineVehicle Speed Control

I KEEP GETTING REDUCED ENGINE POWER P1516 CODE . READING THE POST'S ON THE INTERNET THIS IS A REAL COMMON PROBLEM.ALSO THE SPEEDOMETER WILL DISPLAY 120 MPH SITTING AT A TRAFFIC LIGHT.

NHTSA ODI #10544175

Mileage unknown · Dec 13, 2011
Engine And Engine CoolingVehicle Speed ControlCrash

WHILE DRIVING ON THE HIGHWAY, MY 2003 GMC SIERRA 2500 DISPLAYED A "REDUCED ENGINE POWER" WARNING ON MY DASHBOARD. MY VEHICLE LOST ALL SPEED CONTROL, DECELERATING FROM 65 MPH TO 20 MPH IN A MATTER OF SECONDS. I IMMEDIATELY PULLED OVER TO THE SIDE OF THE HIGHWAY AND SHUT MY TRUCK OFF. ONCE I RESTARTED THE VEHICLE, THE MESSAGE WAS …

Read full complaint

WHILE DRIVING ON THE HIGHWAY, MY 2003 GMC SIERRA 2500 DISPLAYED A "REDUCED ENGINE POWER" WARNING ON MY DASHBOARD. MY VEHICLE LOST ALL SPEED CONTROL, DECELERATING FROM 65 MPH TO 20 MPH IN A MATTER OF SECONDS. I IMMEDIATELY PULLED OVER TO THE SIDE OF THE HIGHWAY AND SHUT MY TRUCK OFF. ONCE I RESTARTED THE VEHICLE, THE MESSAGE WAS GONE AND MY TRUCK WAS FINE. IT WAS A VERY SCARY INCIDENT NOT BEING ABLE KEEP THE RIGHT SPEED FOR THE CONDITIONS ON THE HIGHWAY. *TR

NHTSA ODI #10439779

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.