2004 Chevrolet trailblazer ext
Recalls, most-reported problems, crash-test ratings, fuel economy and what a 2004 Chevrolet trailblazer ext is worth — from official NHTSA and EPA data. 1 on record.
2004 Chevrolet trailblazer ext at a glance
Included: that car's specs and build sheet, model-year recall campaigns and a fair price.
2004 Chevrolet trailblazer ext recalls 1
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.
Fix: 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.
Source: U.S. NHTSA, checked 4 Nov 2026. A campaign covers the model year; to see whether a particular car still needs the repair, check its VIN on NHTSA.gov or ask a franchised dealer.
2004 Chevrolet trailblazer ext common problems
The most-reported problem areas across all 1,357 owner complaints filed with NHTSA — and what to check before you buy.
2004 Chevrolet trailblazer ext MPG & running costs
Source: U.S. EPA / DOE fueleconomy.gov. The EPA lists 4 versions of this model year; combined is shown as a range and the other figures are averages.
Estimated 5-year cost to own
A rough guide to what running a 2004 Chevrolet trailblazer ext costs over five years and 75,000 miles.
How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.
Investigations & service bulletins
NHTSA defect investigations 4
Loss of Headlights Closed
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 scope of this investiga…
NHTSA #RQ17002 · Exterior Lighting · opened Apr 2017 · closed Mar 2021FUEL PUMP MODULE LEAKS GASOLINE Closed
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 FUEL VAPORS IN TH…
NHTSA #EA07009 · Fuel System, Gasoline · opened Jul 2007 · closed Aug 2008BRAKE LAMP FAILURE Closed
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 ON CONSUMER COMPL…
NHTSA #EA04021 · Exterior Lighting · opened Aug 2004 · closed Nov 2004BRAKE LAMP FAILURE Closed
THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS INVESTIGATION ON MODEL YEAR (MY) 2002-04 CHEVROLET TRAILBLAZER VEHICLES. GM REPORTS THAT OTHER VEHICLES SHARING THIS PLATFORM AND BRAKE LAMP DESIGN ARE THE MY 2002-2004 CHEVROLET TRAILBLAZER EXT; GMC ENVOY, XL, XUV; OLDSMOBILE BRAVADA AND 2004 BUICK RAINIER. COMPLAINTS ALLEGE THAT THE REAR BRAKE LAMP DOES NOT OPERATE WHEN THE BRAKE PEDAL IS DEPRESSED. THERE IS NO…
NHTSA #PE04032 · Exterior Lighting · opened Apr 2004 · closed Aug 2004An investigation means NHTSA is examining a possible defect — it is not a recall, and many close without one.
Manufacturer service bulletins 712
Technical notes the manufacturer sent to dealers about known issues and fixes. Useful to mention to a mechanic — they are not recalls and repairs may not be covered. Showing the 10 most recent of 712.
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
Bulletin PIP5601C · Jul 2025This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment…
Bulletin PIP5358D · Feb 2025This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Record…
Bulletin PIP4723J · Electrical System · Oct 2024This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures…
Bulletin PIT5099H · Sep 2024This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures…
Bulletin PIT5099H · Sep 2024This 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 que…
Bulletin PIT3271P · Sep 2024Vehicle 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 exc…
Bulletin General Communication · Electrical System · Aug 2024GM 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 caref…
Bulletin 24-NA-141 · Power Train · Jul 2024This 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 c…
Bulletin 16-NA-383 · Fuel/propulsion System, Engine · Jun 2024This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
Bulletin 18-NA-099 · Jun 2024Source: NHTSA Office of Defects Investigation, listed for the TRAILBLAZER EXT. Model-year data, not specific to one car.
Canadian recalls 4
Transport Canada recall campaigns for the 2004 Chevrolet trailblazer ext. Relevant if the car was first sold in, or imported from, Canada.
Other
Issue: This recall is for aftermarket replacement rear window glass produced by Vitro Automotriz. Certain rear window glass may not have been properly tempered. If the window breaks, the glass may separate into large pieces instead of very small ones. Note: This is a voluntary recall that is not being conducted under the requirements of the Motor Vehicle Safety Act. Safety Risk…
Transport Canada #2019420 · Aug 2019Lights And Instruments
On certain vehicles, the directional/hazard signals may not operate as designed. Actuation of the turn signal or hazard lights will cause them to illuminate and remain illuminated (not flash as intended). Drivers may not be able to clearly signal their intentions to turn, change travel lanes or potentially warn others of an impaired vehicle operating condition. Correction: Deal…
Transport Canada #2005131 · May 2005Lights And Instruments
On certain 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. The loss of one or both of the tail lamps/stop lamps could reduce the vehicle's visibility to following drivers and fail to warn others that the vehicle is braking and/or is stopped, which could lead to a…
Transport Canada #2004390 · Oct 2004Brakes
On certain vehicles, the brake hoses are not labelled with a designation that identifies the manufacturer of the assembly as required by CMVSS 106. This non-compliance has no effect on the performance of the involved brake hose assemblies. Correction: Since this does not pose a safety risk, no corrective action is required.
Transport Canada #2004088 · Mar 2004Source: Transport Canada Motor Vehicle Safety Recalls Database.
About the Chevrolet trailblazer ext
The Chevrolet TrailBlazer is a mid-size SUV produced by Chevrolet, a division of General Motors. The nameplate was first used in North America from 2001 to 2008; in 2009, it was replaced by the Traverse, as a crossover SUV. In 2011, production of a newly redesigned version of the Trailblazer for the Asian and Brazilian markets began.
From Wikipedia, licensed CC BY-SA 4.0. Describes the model line in general, not this model year specifically.