2003 Chevrolet Trailblazer Ext 370 Recalls
No NHTSA recalls on record for the 2003 Chevrolet Trailblazer Ext 370. That means NHTSA has no open safety campaign for this vehicle — it does not guarantee the absence of problems. Owners have filed 19 complaints with NHTSA, most often about the electrical system. Last updated July 5, 2026.
Complaints by component
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“Tl* the contact owns a 2003 chevrolet trailblazer ext 370. The contact stated that while driving at various speeds, the vehicle surged forward and the rpms fluctuated without warning. In addition, the contact stated that an abnormal fuel odor emitted from the vehicle as the check fuel warning…”
“2003 chevrolet trailblazer 370 rear passenger side door electrical window control switch would not completely close window . Smelled like electrical wire burning. Had vehicle stop at time and had assistance in removing door interior panel and found electrical window switch completely melted and…”
“Tl* the contact owns a 2003 chevrolet trailblazer ext 370. While driving at various speeds, there was an abnormal odor of fuel coming from the vehicle. The failure recurred continuously. The contact observed fuel dripping from the rear driver side of the vehicle. The vehicle was taken to the…”
“My wife was driving the suv at highway speed when the front windshield wipers ceased to function during a heavy thunderstorm. She had to pull over because her visibility was obstructed to the point of not being able to operate the vehicle safely.”
“Tl* the contact owns a 2003 chevrolet trailblazer ext 370. While driving various speeds, the hatch door ajar light illuminated and failed to latch without warning. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 100,000.”
“Vehicle started leaving spots of oil on the ground over night. Was driving to work on wednesday and a bluish cloud of smoke was trailing behind me. Arrived at work and let truck cool down after which I crawled underneath and with a mirror was able to locate the leaking rear main seal. This is a…”
“After a long day of work, I returned to my parked vehicle to discover a totally flat front right tire, on closer examination it was noted that the tire had split on the outside seam. It was noted that the same condition of the tire splitting was visible on all three of the other tires on the…”
“After a long day of work, I returned to my parked vehicle to discover a totally flat front right tire, on closer examination it was noted that the tire had split on the outside seam. It was noted that the same condition of the tire splitting was visible on all three of the other tires on the…”
Defect investigations
FUEL PUMP MODULE LEAKS GASOLINE
DURING THE COURSE OF THIS EA INVESTIGATION, ODI OBSERVED THAT THE MAJORITY OF THE COMPLAINTS (88%) AND WARRANTY CLAIMS (94%) WERE REPORTED FOR VEHICLES THAT ARE REGISTERED FOR USE IN THE SALT BELT REGION OF THE US.THIS AREA INCLUDES 20 STATES IN THE NORTHEAST, MID ATLANTIC AND THE MIDWEST REGIONS AND THE DISTRICT OF…
FUEL PUMP MODULE LEAKS GASOLINE
ODI HAS RECEIVED REPORTS THAT THE FUEL PUMP MODULE LEAKS FUEL AND OR VAPOR UNDERNEATH THE VEHICLE.GM STATES, THE FAILURE MECHANISM IS CORROSION OF THE FUEL PUMP MODULE FLANGE WHICH MAY LEAD TO A FUEL LEAK.CORROSION OF THE FUEL PUMP MODULE FLANGE IS THE RESULT OF THE VEHICLE OPERATING IN A CORROSIVE ENVIRONMENT.ODI…
FUEL TANK LEAK
IN JUNE 2007, GM WILL EXPAND ITS SPECIAL POLICY TO ADDRESS FUEL TANK INLET CHECK VALVE (ICV) FRACTURES ON CERTAIN MODEL YEAR (MY) TRAILBLAZER EXT AND GMC ENVOY XL VEHICLES.THE EXPANDED POLICY COVERS MY 2002-2004 TRAILBLAZER EXT, GMC ENVOY XL, AND GMC ENVOY XUV VEHICLES AND WILL EXTEND FOR A PERIOD OF 10 YEARS OR…
FUEL TANK LEAK
IN JUNE 2007, GM WILL EXPAND ITS SPECIAL POLICY TO ADDRESS FUEL TANK INLET CHECK VALVE (ICV) FRACTURES ON CERTAIN MODEL YEAR (MY) TRAILBLAZER EXT AND GMC ENVOY XL VEHICLES.THE EXPANDED POLICY COVERS MY 2002-2004 TRAILBLAZER EXT, GMC ENVOY XL, AND GMC ENVOY XUV VEHICLES AND WILL EXTEND FOR A PERIOD OF 10 YEARS OR…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2003 Chevrolet Trailblazer Ext 370 as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.