IllustrationTHIS CAR HAS HAD PROBLEMS BEFORE CUTTING OFF FOR NO REASON. THE DEALER WHERE I BOUGHT IT FROM SAID THAT "THEY COULD NOT FIND ANYTHING WRONG WITH IT". NOW THE CAR GAUGES AND DASHBOARD LIGHTS DO NOT WORK PROPERLY. THEY SOMETIMES DO NOT WORK AT ALL AND AFTER A WHILE TURN ON. *JB
2004 Chevrolet Trailblazer
Owner reports · Recalls · Investigations
More warning signs than most Trailblazer years
Owner complaints for the 2004 Chevrolet Trailblazer are substantially higher than the model-year median of 87.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Trailblazer years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
880–25K
16325–50K
27450–75K
17675–100K
137100–150K
61150K+
899 reports with mileage · 182 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.
- Electrical System. Review the 627 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Exterior Lighting. Review the 101 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 93 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
56 crash reports31 fire reports47 injury reports
What owners actually said
1,081 reportsSPEEDOMETER STARTED ACTING ERRATICALLY. EITHER POSTS NO SPEED, OR SHOWS A SPEED THAT IS OBVIOUSLY NOT CORRECT. TURNING OFF CAR, AND RESTARTING CORRECTS THE PROBLEM FOR THE MOMENT. *JB
I HAVE A 2004 CHEVY TRAILBLAZER. EARLY LAST MONTH I DISCOVERED MY SPEEDOMETER METER NOT STOPPING AT 0 MPH WHEN I APPROACHED A TRAFFIC LIGHT. IT STOPPED AT 20 MPH. THIS MEANT THE SPEEDOMETER WAS INDICATING A SPEED FASTER THAN I WAS ACTUALLY GOING. WHEN I TURNED THE VEHICLE OFF THAT EVENING AND BACK ON THE NEXT MORNING, IT RES…
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I HAVE A 2004 CHEVY TRAILBLAZER. EARLY LAST MONTH I DISCOVERED MY SPEEDOMETER METER NOT STOPPING AT 0 MPH WHEN I APPROACHED A TRAFFIC LIGHT. IT STOPPED AT 20 MPH. THIS MEANT THE SPEEDOMETER WAS INDICATING A SPEED FASTER THAN I WAS ACTUALLY GOING. WHEN I TURNED THE VEHICLE OFF THAT EVENING AND BACK ON THE NEXT MORNING, IT RESET AND RETURNED TO 0 MPH. AS THE MONTH PROGRESSED, THE SPEEDOMETER INDICATOR CONTINUED EXHIBITING THIS PROBLEM. THIS PROBLEM HAS CAUSED THE INDICATOR TO EXCEED PASSED THE 120 MPH INDICATOR. THE ONLY RESOLUTION HAS BEEN TO CONTINUOUSLY TURN THE CAR OFF AND BACK ON. DEPENDING ON WHERE THE INDICATOR STOPS WILL DICTATE HOW MANY TIMES I'LL HAVE TO TURN THE CAR OFF AND BACK ON TO GET THE INDICATOR BACK TO 0 MPH. *NM
THE CAR DRIVES FINE BUT A FEW WEEKS AFTER PURCHASE, THE PASSENGER MIRROR STARTED MOVING. I HAVE A CAR WHERE WHEN YOU OPEN THE CAR WITH YOUR DESIGNATED KEY, THE MIRRORS SET TO YOUR PREFERENCES. I KEPT RESETTING THE MIRROR AND A FEW DAYS LATER THEY WOULD NOT HOLD THE SET AGAIN. NOW EVERY TIME I SHUT OFF THE CAR AND GET BACK IN …
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THE CAR DRIVES FINE BUT A FEW WEEKS AFTER PURCHASE, THE PASSENGER MIRROR STARTED MOVING. I HAVE A CAR WHERE WHEN YOU OPEN THE CAR WITH YOUR DESIGNATED KEY, THE MIRRORS SET TO YOUR PREFERENCES. I KEPT RESETTING THE MIRROR AND A FEW DAYS LATER THEY WOULD NOT HOLD THE SET AGAIN. NOW EVERY TIME I SHUT OFF THE CAR AND GET BACK IN THE MIRRORS HAVE TO BE RESET. THERE HAVE BEEN TIMES WHEN I FORGET TO RESET THE MIRROR AND START DRIVING. I AM SO AFRAID I AM GOING TO HIT SOMEONE WHILE ATTEMPTING TO CHANGE LANES. I HAVE TO TRY TO RESET THE MIRROR WHILE DRIVING AND THIS TAKES MY ATTENTION AWAY FROM THE ROAD. I HAVE HAD THE CAR IN THE SHOP THREE TIMES IN KENTUCKY. AT FIRST THEY KEPT TELLING ME THEY COULDN'T FIND THE PROBLEM BECAUSE IT DIDN'T ACT UP FOR THEM BECAUSE IT WOULD HOLD FOR THE TIME THEY HAD THE CAR. FINALLY THEY DID ANOTHER TEST AND IT SHOWED I HAD A FAULTY PART IN THE DOOR THAT IS ATTACHED TO THE MIRROR. THEY REPLACED THAT AND IT HELD FOR ABOUT A WEEK AND A HALF AND THEN STARTED AGAIN. I WAS IN THE PROCESS OF MOVING TO SOUTH CAROLINA SO I TOOK IT TO A DEALERSHIP THERE. THEY COULDN'T FIND ANYTHING WRONG AND CHARGED ME FOR THE VISIT EVEN THOUGH THIS HAS BEEN AN ONGOING PROBLEM. I CALLED GM AND TALKED BY E-MAIL TO THEIR CUSTOMER SERVICE AND HAVE RECEIVED NO HELP AT ALL. THEY SAID THEY WOULD CALL BACK (THEY CALLED ONCE) BUT I HAVEN'T HEARD FROM THEM. *JB
I PARKED AND TURNED OFF MY CAR AND IT BURST INTO FLAMES. I HAD ABSOLUTELY NO WARNING, NO WARNING LIGHT CAME ON AND I HAD NO PROBLEMS WITH THE CAR AT ALL UNTIL THE FIRE. *NM
I HAVE HAD MY TRAIL BLAZER FOR 1 YR AND 1 MONTH. IN THAT TIME I HAVE HAD TO REPLACE FRONT AND BACK PADS AND ROTORS, BALL JOINTS, CATALYTIC (SP) CONVERTER, AND NOW THEY JUST TOLD ME I HAVE TO REPLACE THE HEAD GASKET ON THE MANIFOLD. WHAT THE HELL IS GOING ON WITH THIS VEHICLE. I NO LONGER FEEL SAFE DRIVING IT. THE OTHER DAY THE…
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I HAVE HAD MY TRAIL BLAZER FOR 1 YR AND 1 MONTH. IN THAT TIME I HAVE HAD TO REPLACE FRONT AND BACK PADS AND ROTORS, BALL JOINTS, CATALYTIC (SP) CONVERTER, AND NOW THEY JUST TOLD ME I HAVE TO REPLACE THE HEAD GASKET ON THE MANIFOLD. WHAT THE HELL IS GOING ON WITH THIS VEHICLE. I NO LONGER FEEL SAFE DRIVING IT. THE OTHER DAY THE RADIO JUST STOPPED PLAYING AND THEN THE SERVICE 4 WHEEL DRIVE LIGHT CAME ON. *NM
THE PANEL FOR THE POWER SEAT CONTROLS ON THE DRIVER'S SEAT IS DESIGNED SUCH THAT IT IS BROKEN LOOSE EASILY BY SIMPLY ENTERING AND EXITING THE VEHICLE. IT'S DESIGN AND MOUNTING LOCATION CAUSES IT TO HAVE TO SUPPORT THE WEIGHT OF THE DRIVER AS HE ENTERS OR EXITS THE VEHICLE. ONCE THE MOUNTING SUPPORTS BREAK, THE CONTROLS ARE ON…
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THE PANEL FOR THE POWER SEAT CONTROLS ON THE DRIVER'S SEAT IS DESIGNED SUCH THAT IT IS BROKEN LOOSE EASILY BY SIMPLY ENTERING AND EXITING THE VEHICLE. IT'S DESIGN AND MOUNTING LOCATION CAUSES IT TO HAVE TO SUPPORT THE WEIGHT OF THE DRIVER AS HE ENTERS OR EXITS THE VEHICLE. ONCE THE MOUNTING SUPPORTS BREAK, THE CONTROLS ARE ONLY SUPPORTED BY THE WIRING. *NM
TRAILBLAZER WAS TAKEN TO PLACE OF PURCHASE TO REPAIR PULSATING BRAKES. VEHICLE IS UNDER WARRANTY WITH UNDER 26,000 MILES. DEALER REFUSED TO REPAIR. SAID GM WOULD NOT PAY FOR REPAIRS. RUSTY ROTORS WAS THE DIAGNOSIS. CONTACTED GM REP (LISA) AND SHE TOLD ME I LIVED IN THE RUST-BELT AND THAT WAS THE REASON FOR THE RUSTY ROTOR COND…
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TRAILBLAZER WAS TAKEN TO PLACE OF PURCHASE TO REPAIR PULSATING BRAKES. VEHICLE IS UNDER WARRANTY WITH UNDER 26,000 MILES. DEALER REFUSED TO REPAIR. SAID GM WOULD NOT PAY FOR REPAIRS. RUSTY ROTORS WAS THE DIAGNOSIS. CONTACTED GM REP (LISA) AND SHE TOLD ME I LIVED IN THE RUST-BELT AND THAT WAS THE REASON FOR THE RUSTY ROTOR CONDITION, NOT DEFECTIVE PARTS. SHE REFUSED TO AUTHORIZE REPAIR. SUGGESTED I RETURN THE VEHICLE TO THE DEALER, HAVE THEM CUT THE ROTORS (AT A RATE OF $150 PER AXLE). SUBMIT THE BILL TO GM AND THEY WOULD DECIDE WHETHER TO REIMBURSE ME. *NM
THE SPEEDOMETER AND TACHOMETER GAUGES ON THE DASH DON'T WORK. THE GET STUCK AT SAY 50 MPH AND 7000 RPMS. SO YOU DON'T KNOW HOW FAST YOU ARE GOING OR WHAT THE TRUE RPM'S ARE. THAN IT TAKES ABOUT A WEEK AND YOUR DASH WILL START WORKING AGAIN. MY MECHANIC HAD 4 OTHER TRAILBLAZERS AT HIS SHOP WITH THE SAME ISSUE. IT COST 400.00 TO …
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THE SPEEDOMETER AND TACHOMETER GAUGES ON THE DASH DON'T WORK. THE GET STUCK AT SAY 50 MPH AND 7000 RPMS. SO YOU DON'T KNOW HOW FAST YOU ARE GOING OR WHAT THE TRUE RPM'S ARE. THAN IT TAKES ABOUT A WEEK AND YOUR DASH WILL START WORKING AGAIN. MY MECHANIC HAD 4 OTHER TRAILBLAZERS AT HIS SHOP WITH THE SAME ISSUE. IT COST 400.00 TO FIX AND YOU ARE WITH OUT A CAR FOR TWO DAYS. *JB
THE VEHICLE HAS STALLED OUT 3 TIMES IN THE PAST MONTH. CHECK ENGINE LIGHT CAME ON AND THEN REDUCED ENGINE POWER LIGHT. WE COULD ONLY GO 10 MPH. THANKFULLY WE WERE IN A RESIDENTIAL AREA AND NOT ON THE FREEWAY. DEALERSHIP SAID IT WAS A FAULTY ACCELERATOR POSITION MODULE AND THE PCM NEEDED TO BE REPROGRAMMED. LUCKY US WE ARE O…
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THE VEHICLE HAS STALLED OUT 3 TIMES IN THE PAST MONTH. CHECK ENGINE LIGHT CAME ON AND THEN REDUCED ENGINE POWER LIGHT. WE COULD ONLY GO 10 MPH. THANKFULLY WE WERE IN A RESIDENTIAL AREA AND NOT ON THE FREEWAY. DEALERSHIP SAID IT WAS A FAULTY ACCELERATOR POSITION MODULE AND THE PCM NEEDED TO BE REPROGRAMMED. LUCKY US WE ARE OVER IN MILES AND THIS IS NOT COVERED BY THE WARRANTY. *NM
Official recalls
205V198000 · Exterior Lighting:turn Signal
May 5, 2005
ON CERTAIN TRUCKS AND SPORT UTILITY VEHICLES, THE DRIVER WISHING TO SIGNAL A TURN BY MOVING THE DIRECTIONAL SIGNAL LEVER, (UP OR DOWN) MAY CAUSE THE FRONT MARKER/TURN LIGHTS AND REAR TURN LIGHTS TO FLASH IN A MANNER SIMILAR TO HAZARD WARNING, RATHER THAN FLASHING ON THE DESIRED SIDE ONLY.
Consequence & remedy
Consequence: THE DRIVER MAY NOT BE ABLE TO CLEARLY SIGNAL THEIR INTENTIONS TO TURN, CHANGE TRAVEL LANES, OR POTENTIALLY WARN OTHERS OF AN IMPAIRED VEHICLE OPERATING CONDITION INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE SUSPECT FLASHER MODULES WITH A NEW FLASHER MODULE DESIGNED WITH SEALED RELAYS AND MORE DURABLE CONTACT MATERIAL INSIDE OF THE RELAYS FREE OF CHARGE. THE RECALL BEGAN ON AUGUST 4, 2005. ISUZU BEGAN MAILING OWNER LETTERS ON AUGUST 4, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, ISUZU AT 1-800-255-6727, BUICK AT 1-866-608-8080, AND OLDSMOBILE AT 1-800-630-6537.
04V527000 · Exterior Lighting:brake Lights
Nov 1, 2004
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 & remedy
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.
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
4RQ17002 · Loss Of Headlights
Opened Apr 24, 2017 · Closed Mar 29, 2021
Status: closed (inferred from source dates) · Exterior Lighting: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 scope of this investigation was expanded to include all vehicles equipped with the subject Headlight Driver Module (HDM). The focus of the investigation was to determine whether actions performed by General Motors adequately addressed any unreasonable risk to motor vehicle safety in the subject vehicles concerning the headlights and the HDM that controls them.Under normal electrical load and environmental conditions, the HDM can overheat inside the Underhood Electrical Center (UEC). This can cause the module to fail and result in a simultaneous loss of both low beam headlights and both daytime running lights (DRLs), often with no warning or prior detectability to the driver. This failure can be intermittent or permanent. No other exterior lights are affected. High beams, turn signals, brake lights, and reverse lights are still operational.General Motors addressed this issue with 2 recalls (14V755 & 15V519) and a special coverage program (N172091910). In view of the recalls and special coverage program implemented by GM and the vehicle high beams continuing to operate, ODI has tentatively concluded that the actions taken by GM mitigate any unreasonable risk to safety posed by HDM failure in the subject vehicles.Accordingly, the investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The agency reserves the right to take additional action if warranted by new circumstances.The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
EA07009 · Fuel Pump Module Leaks Gasoline
Opened Jul 10, 2007 · Closed Aug 28, 2008
Status: closed (inferred from source dates) · Fuel System, Gasoline:delivery:fuel Pump
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 THEIR VEHICLES WHILE DRIVING.UPON FURTHER EXAMINATION OF THEIR VEHICLES, THEY DISCOVERED THAT FUEL VAPORS WERE COMING OUT OF THE TOP OF THE FUEL TANK. THIS CONDITION IS CAUSED BY CORROSION OF THE RETURN AND SENDER LINES OF THE FUEL PUMP MODULE.WATER AND ROAD SALT COLLECT ON TOP OF THE FUEL PUMP LEADING TO SMALL PINHOLES APPEARING ON THE FUEL LINES.FUEL MAY LEAK AND COLLECT ON TOP OF THE MODULE AND/OR SPILL ONTO THE GROUND.THE DATA EVALUATED UNDER THIS INVESTIGATION REFLECT A RELATIVELY LOW FREQUENCY OF OCCURRENCE THAT LARGELY ARISES IN SALT BELT STATES.GM HAS EXTENDED THE WARRANTY ON THE SUBJECT COMPONENT TO TEN YEARS OR 120,000 MILES.FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED AT THIS TIME; ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.FOR ADDITIONAL INFORMATION SELECT DOCUMENT SEARCH.
EA04021 · Brake Lamp Failure
Opened Aug 3, 2004 · Closed Nov 4, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
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 COMPLAINTS ALLEGING BRAKE LIGHTS NOT OPERATING WHEN THE BRAKE PEDAL IS DEPRESSED.ON AUGUST 3, 2004 ODI UPGRADED PE04-032 TO AN ENGINEERING ANALYSIS (EA04-021).BY LETTER DATED OCTOBER 27, 2004 GM NOTIFIED NHTSA THAT IT WILL CONDUCT A SAFETY RECALL (NHTSA # 04V527) COVERING SUBJECT VEHICLES THAT WERE NOT ALREADY REPAIRED UNDER GM'S SPECIAL POLICY.MY 2004 SUBJECT VEHICLES BUILT AFTER AUGUST 8, 2003 CONTAIN IMPROVED BRAKE LAMP ASSEMBLIES AND ARE NOT INCLUDED IN THE RECALL.GM DEALERS WILL INSTALL THE IMPROVED BRAKE LAMP ASSEMBLY ON SUBJECT VEHICLES BUILT ON AUGUST 8, 2003 AND EARLIER.THE ACTION TAKEN BY GM IS SUFFICIENT TO RESOLVE THE ISSUES RAISED BY THIS INVESTIGATION.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.
PE04032 · Brake Lamp Failure
Opened Apr 6, 2004 · Closed Aug 3, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
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 INDICATION TO THE DRIVER FROM INSIDE THE VEHICLE THAT ONE OR MORE BRAKE LAMPS BULBS ARE NOT FUNCTIONING.GM FOUND THAT HEAT FROM THE BULB COULD DEFORM THE LAMP SOCKET, PRODUCE ELECTRICAL ARCING AND AN INOPERATIVE BULB.TO CORRECT THE CONDITION, GM CHANGED THE BULB TO A BULB THAT TRANSMITS LESS HEAT TO THE SOCKET AND CHANGED THE SOCKET TO A THERMOPLASTIC POLYMER TO IMPROVE THERMAL STABILITY.THESE CHANGES WERE IMPLEMENTED INTO PRODUCTION VEHICLES ON OCTOBER 1, 2003.GM IMPLEMENTED A SPECIAL POLICY BY NOTIFYING CONSUMERS THAT IF THEY SHOULD EXPERIENCE A BRAKE LAMP FAILURE TO GO TO THEIR GM DEALERSHIP TO HAVE THE CIRCUIT BOARD CONTAINING THE BRAKE LAMP REPLACED ALONG WITH NEW BULBS.THIS POLICY IS GOOD FOR THE FIRST 6 YEARS OR 72,000 MILES OF THE LIFE OF THE VEHICLE.ODI WILL UPGRADE THIS INVESTIGATION TO EA 04-021 AND INCLUDE THE ABOVE MENTIONED VEHICLES.