Problems · by component

2003 Chevrolet Trailblazer Ext equipment problems

38 owner complaints to NHTSA about the 2003 Chevrolet Trailblazer Ext cite equipment, 3% of all 1,255 complaints for this model year.

Complaints
38
3% of all complaints
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
5
Reported by owners
01 —Owner reports

What owners say about the equipment

Verbatim from NHTSA complaints, newest first
“TL* THE CONTACT OWNS A 2003 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE AIR CONDITIONER LIGHT, REAR BRAKE LIGHT, AND REAR DRIVER SIDE TAIL LIGHT MALFUNCTIONED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC AND THE TECHNICIAN DIAGNOSED THAT THE LIGHTS MALFUNCTIONED DUE TO ELECTRICAL ISSUES WITH THE VEHICLE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 65,000.”
Owner complaint to NHTSAFiled May 27, 2015Electrical system, Exterior lighting, EquipmentODI 10721742
“WE HAVE A 2003 CHEVY TRAILBLAZER LTZ. THE INSTRUMENT CLUSTER IS GOING ALL CRAZY. THE SPEEDOMETER IS NOT WORKING. I SEE THIS HAS BEEN AN ISSUE ON A LOT OF THE VEHICLES. WE AHVE TWO CHILDREN AND HATE DRIVING A VEHICLE THAT WE DON'T KNOW HOW FAST WE ARE GOING. IT WOULD ONLY HAPPEN ONCE A MONTH AT FIRST AND NOW IT IS EVERY TIME WE DRIVE IT. WE TOOK IT TO THE DEALSHIP AND WERE TOLD THAT WE WOULD HAVE TO PURCHASE A NEW ONE. *TR”
Owner complaint to NHTSAFiled Mar 31, 2011Equipment, Electrical systemODI 10393809
“TL*THE CONTACT OWNS A 2003 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT UPON ENTERING THE VEHICLE SHE SMELLED A FOUL ODOR WHICH SHE DESCRIBED AS MILDEW. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO INSTALLED A DELAYED BLOWER. APPROXIMATELY 2 YEARS LATER THE ODOR RETURNED AND THE BATTERY BEGAN TO DRAIN RAPIDLY DUE TO THE DELAYED BLOWER WHICH CONTINUED TO FUNCTION WHEN THE VEHICLE WAS TURNED OFF. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE A MODULE WITHIN THE DELAYED BLOWER WAS REPLACED TWICE. THE CONTACT STATED THAT A FEW MONTHS LATER, THE BLOWER STOPPED WORKING. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER TO REPLACE THE MODULE INSIDE OF THE BLOWER. APPROXIMATELY 2 YEARS LATER THE CONTACT STATED THAT THE WIRING WITHIN THE DELAYED BLOWER BURNED OUT AND IT WAS REPLACED. THE FAILURE HAD BECOME PROGRESSIVELY WORSE OVER TIME. THE FAILURE MILEAGE WAS 5,457 AND THE CURRENT MILEAGE WAS 140,000.”
Owner complaint to NHTSAFiled Jul 12, 2010EquipmentODI 10342738
“3 YEAR AGO I BOUGHT A 2003 CHEVY TRAILBLAZER IT HAD 75,000 MILES ON WHEN I BOUGHT IT THE WEEK AFTER MY TACH STOPPED WORKING NO READING AT ALL I WENT TO EVERY MECHANIC THEY TOLL ME TO TAKE IT TO THE DEALER I TOOK IT TO THE DEALER AND THEY TOLD ME THAT IT WAS A MODULE PROBLEM AND THAT AND THAT IS GOING TO NEED A NEW ONE THEY WANTED TO CHARGE ME OVER 2,500 DOLLARS TO FIX THE PROBLEM I HAVE SEARCH AROUND AUTO PARTS TO SEE IF THERE IS ANY SENSOR FOR THE TACH. SINCE THEN IT HAS NOT WORK. *TR”
Owner complaint to NHTSAFiled Jun 23, 2010Equipment, Electrical systemODI 10339634
“2ND TIME REPLACING CLUTCH FAN "68,000 MILES" CHECK ENGINE LIGHT COMES ON. LOUD NOISE FROM ENGINE. EVENTUALLY GOES INTO REDUCED POWER MODE "MAX 10MPH". MY CHECK ENGINE LIGHT IS ON AGAIN AND IT IS MAKING THAT LOUD WHIRRING NOISE AGAIN. I AM EXPECTING A THIRD FAILURE SOON. THIS SHOULD BE RECALLED. *TR”
Owner complaint to NHTSAFiled Nov 6, 2009Engine and engine cooling, EquipmentODI 10291215
“SPARE TIRE CARRIER NOT OPERATIONAL. INABILITY TO CHANGE FLAT TIRE UNSAFE AND COSTLY (OF COURSE, TO THE OWNER). GENERAL MOTORS POORLY RE-DESIGNED SPARE TIRE WINCH INCLUDES PLASTIC HOUSING FOR CABLE THAT DETERIORATES IN THE SEVERE SERVICE AREA OF A MOTOR VEHICLE. PREVIOUS DESIGNS DID NOT INVOLVE THE USE OF PLASTICS IN THE EXTERNAL MECHANISMS. MINE FAILED LEAVING ME WITH A FLAT TIRE AND A PERFECTLY GOOD SPARE THAT I WAS UNABLE TO LOWER FROM THE REAR UNDERCARRIAGE OF THE VEHICLE. MAKES NO SENSE TO REPLACE THE WINCH WITH ANOTHER OF THE SAME DESIGN LEAVING MOST PEOPLE NO OPTION TO EITHER NOT CARRY A SPARE OR CARRY INSIDE THE VEHICLE EITHER UNSAFELY ANCHORED OR NOT ANCHORED AT ALL BECOMING A PROJECTILE IN THE EVENT OF AN ACCIDENT. *TR”
Owner complaint to NHTSAFiled Jul 29, 2009EquipmentODI 10278725

Showing 6 of 38 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.