NHTSA lists 261 complaints for the 2004 Chevrolet Trailblazer EXT, 6 of them mention a crash and 3 mention a fire. 6 complaints mention an injury, with 13 injuries and 0 deaths reported.
Data build 2026-10-09.
NHTSA lists this vehicle as CHEVROLET TRAILBLAZER EXT.
Model-generated complaint tags: This model year has not been tagged.
Recalls
See new recalls and investigations this week.
1 recalls.
Date: 2004-11-01. Systems: EXTERIOR LIGHTING.
Defect: ON CERTAIN SPORT UTILITY VEHICLES, VIBRATION AND HEAT MAY CAUSE THE TAIL LAMP/STOP LAMP BULB TO LOOSEN IN ITS SOCKET. IF THIS OCCURS, THE BULB MAY FLICKER AND EVENTUALLY BECOME INOPERATIVE.
Consequence: AN INOPERATIVE BRAKE LAMP WILL NOT CONVEY THE DRIVER'S INTENTION OF STOPPING TO DRIVERS IN FOLLOWING VEHICLES, AND AN INOPERATIVE REAR TURN SIGNAL LAMP WILL NOT CONVEY THE DRIVER'S INTENTION TO TURN TO DRIVERS IN FOLLOWING VEHICLES. BOTH OF THESE FAILURES CAN INCREASE THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT THE TAIL LAMP/STOP LAMP ASSEMBLIES, AND IF NECESSARY, REPLACE THEM. THE RECALL BEGAN ON NOVEMBER 22, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, BUICK AT 1-866-608-8080, OR GMC AT 1-866-996-9463.
Do not drive: No. Park outside: No.
Investigations
3 investigations; 0 open.
RQ17002
Opened: 2017-04-24. Closed: 2021-03-29.
Loss of Headlights
The subject vehicles are model year (MY) 2002-2009 Chevrolet Trailblazer, GMC Envoy, 2004-2007 Buick Rainier, 2003-2008 Isuzu Ascender, 2005-2009 Saab 9-7X, 2002-2004 Oldsmobile Bravada, 2003-2006 Chevrolet SSR, 2005-2009 Buick Lacrosse, and 2006-2008 Pontiac Grand Prix. This scope includes the Trailblazer/Envoy variants: 2002-2006 Envoy XL/Trailblazer EXT and 2004-2005 Envoy XUV. The original sco
Systems: EXTERIOR LIGHTING.
Linked campaign numbers: None listed.
EA07009
Opened: 2007-07-10. Closed: 2008-08-28.
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 COLUMBIA.CONSUMERS IN THE SALT BELT REGION REPORTED TO ODI THAT THEY COULD SMELL F
Systems: FUEL SYSTEM, GASOLINE.
Linked campaign numbers: None listed.
EA04021
Opened: 2004-08-03. Closed: 2004-11-04.
BRAKE LAMP FAILURE
GM STATES THAT SOME BRAKE/TAIL LAMP BULBS CAN PREMATURELY BECOME INOPERATIVE DUE TO MALFUNCTIONING BRAKE/TAIL LAMP SOCKETS.ON MARCH 2, 2004, GM INITIATED A 6-YEAR/72,000 MILE SPECIAL POLICY FOR 989,487 SUBJECT VEHICLES TO INSPECT AND REPLACE THE REAR BRAKE/TAIL LAMP BULB SOCKET ASSEMBLIES.ON APRIL 4, 2004, THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED A PRELIMINARY EVALUATION (PE04-032) BASED O
Systems: EXTERIOR LIGHTING.
Linked campaign numbers: 04V527000.
Manufacturer communications
126 manufacturer communications.
Communications by system| System | Count |
|---|
| EQUIPMENT | 47 |
|---|
| ENGINE AND ENGINE COOLING | 26 |
|---|
| ELECTRICAL SYSTEM | 20 |
|---|
| WHEELS | 10 |
|---|
| POWER TRAIN | 9 |
|---|
| ENGINE | 6 |
|---|
| EQUIPMENT ADAPTIVE/MOBILITY | 6 |
|---|
| FUEL SYSTEM, GASOLINE | 6 |
|---|
11020816
Date: 2025-07-18. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
11007208
Date: 2024-09-06. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician s
11006621
Date: 2024-08-26. Type: Service Campaign. Systems: ELECTRICAL SYSTEM.
Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is com
11006421
Date: 2024-07-24. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions durin
11004761
Date: 2024-06-28. Type: Service Bulletin/Repair Instructions. Systems: ENGINE, FUEL/PROPULSION SYSTEM.
This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
11004557
Date: 2024-06-17. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
11002312
Date: 2024-06-06. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
11000576
Date: 2024-05-07. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
10252735
Date: 2024-03-28. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
10251887
Date: 2024-03-14. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
This bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.