NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports65,000 miles · Aug 19, 2008
Electrical System
LAST WEEK MY WIFE INDICATED THAT WHEN SHE WAS DRIVING, THE SPEEDOMETER IN OUR 2004 TRAILBLAZER WAS SHOWING SHE WAS GOING 100 MPH WHEN IN FACT SHE WAS NOT. I TOOK THE VEHICLE INTO THE DEALERSHIP AND THEY SAID THAT GM IS AWARE OF THE PROBLEM AND FIXING IT ON SOME MODELS BUT WILL NOT COVER THE $500 - $700 COST ON MY MODEL. I CONTAC…
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LAST WEEK MY WIFE INDICATED THAT WHEN SHE WAS DRIVING, THE SPEEDOMETER IN OUR 2004 TRAILBLAZER WAS SHOWING SHE WAS GOING 100 MPH WHEN IN FACT SHE WAS NOT. I TOOK THE VEHICLE INTO THE DEALERSHIP AND THEY SAID THAT GM IS AWARE OF THE PROBLEM AND FIXING IT ON SOME MODELS BUT WILL NOT COVER THE $500 - $700 COST ON MY MODEL. I CONTACTED GM YESTERDAY AND AM AWAITING A RESPONSE. IT HAS TO DO WITH THE INSTRUMENT CLUSTER AND THE PROBLEM IS STILL CONTINUING. I CALL ON THE NHTSA TO EXERT PRESSURE ON GM BEFORE SOMEONE IS KILLED AS THE RESULT OF THIS FAULTY PART THAT GM IS AWARE OF. *TR
NHTSA ODI #10238871
38,500 miles · Aug 18, 2008
Electrical System
ALL LIGHTS, AND BELLS WENT OFF ON INSTRUMENT PANEL. STARTED WITH THE CHECK 4-WHEEL DRIVE, THEN ALL OTHER LIGHTS STARTING FLASHING ON AND OFF. THE GAUGES KEPT GOING DOWN TO NOTHING. HAVE HAD IT IN TO THE SHOP 5 TIMES SO FAR. ISN'T THIS UNDER THE LEMON LAW? AND IT SEEMS AS THOUGH I HAVE TO LOOK FORWARD TO MY SPEEDOMETER GOING…
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ALL LIGHTS, AND BELLS WENT OFF ON INSTRUMENT PANEL. STARTED WITH THE CHECK 4-WHEEL DRIVE, THEN ALL OTHER LIGHTS STARTING FLASHING ON AND OFF. THE GAUGES KEPT GOING DOWN TO NOTHING. HAVE HAD IT IN TO THE SHOP 5 TIMES SO FAR. ISN'T THIS UNDER THE LEMON LAW? AND IT SEEMS AS THOUGH I HAVE TO LOOK FORWARD TO MY SPEEDOMETER GOING OUT NEXT. IT ONLY HAS 38,000 ON IT. I CANT BELIEVE GM WILL NOT TAKE RESPONSIBILITY FOR THEIR MISTAKE. *TR
NHTSA ODI #10238784
52,000 miles · Aug 17, 2008
Electrical System
I HAVE A 2004 CHEVY TRAILBLAZER. THE SPEEDOMETER WENT OUT LAST AUGUST. IT STARTED WITH STAYING ON 20 MPH WHILE I WAS STOPPED AND ENGINE WAS OFF. NOW IT HAS SINCE STOPPED COMPLETELY. IT IS NOW STUCK CLOCKWISE AT ABOUT 150 MPH WITH THE GAUGE POINTING TO NEUTRAL. *TR
NHTSA ODI #10238551
94,518 miles · Aug 4, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING DOWN A MOUNTAIN AT APPROXIMATELY 40 MPH, THE CONTACT BEGAN TO HEAR A GRINDING NOISE. THE VEHICLE WAS TAKEN TO A MECHANIC AND THEY STATED THAT THE CALIPERS LOCKED AND COMPLETELY BURNED THE BRAKES. THE DISC BRAKE PADS, ROTORS, AND CALIPERS WERE REPLACED ON THE REAR…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING DOWN A MOUNTAIN AT APPROXIMATELY 40 MPH, THE CONTACT BEGAN TO HEAR A GRINDING NOISE. THE VEHICLE WAS TAKEN TO A MECHANIC AND THEY STATED THAT THE CALIPERS LOCKED AND COMPLETELY BURNED THE BRAKES. THE DISC BRAKE PADS, ROTORS, AND CALIPERS WERE REPLACED ON THE REAR OF THE VEHICLE. THE CURRENT MILEAGE WAS 94,803 AND FAILURE MILEAGE WAS 94,518. UPDATED 09/16/08 *BF UPDATED 09/24/08. *JB
NHTSA ODI #10236814
40,000 miles · Aug 3, 2008
Engine And Engine CoolingFire
OUR 2004 CHEVROLET TRAILBLAZER WITH APPROX 40,000 MILES CAUGHT FIRE WHILE DRIVING APPROXIMATELY 40 MPH. WE NOTED SMOKE BEHIND THE CAR AND BEFORE WE COULD PULL OVER OTHER DRIVERS WERE YELLING TO US THAT THE CAR WAS ON FIRE. WE IMMEDIATELY GOT TO SIDE OF ROAD, TURNED OFF ENGINE AND A LARGE FIRE WAS COMING FROM THE HOOD. A GOOD S…
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OUR 2004 CHEVROLET TRAILBLAZER WITH APPROX 40,000 MILES CAUGHT FIRE WHILE DRIVING APPROXIMATELY 40 MPH. WE NOTED SMOKE BEHIND THE CAR AND BEFORE WE COULD PULL OVER OTHER DRIVERS WERE YELLING TO US THAT THE CAR WAS ON FIRE. WE IMMEDIATELY GOT TO SIDE OF ROAD, TURNED OFF ENGINE AND A LARGE FIRE WAS COMING FROM THE HOOD. A GOOD SAMARITAN RAN UP WITH A FIRE EXTINGUISHER AND PUT OUT THE FIRE THAT WAS APPROX 4 FEET HIGH FROM THE HOOD. ALL PASSENGERS SAFELY EXITED THE CAR AS SOON AS STOPPING AND DUE TO THE FIRE BEING EXTINGUISHED QUICKLY NO OTHER DAMAGE WAS DONE. THIS VEHICLE WAS RUNNING FINE WITH NO RECENT ISSUES OR SERVICE ON THE VEHICLE PRIOR TO THIS EVENT. WE HAVE NEVER HAD THE CAR SERVICED BY ANYONE OTHER THEN CHEVROLET DEALERSHIPS. WE WERE INFORMED BY THE TOW TRUCK COMPANY THAT THEY HAVE MANY 2004 CHEVY TRAILBLAZERS TOWED THAT HAVE CAUGHT FIRE. I HAVE SEEN SIMILAR EXPERIENCES DESCRIBED ONLINE BUT HAVE NOT FOUND IF THERE IS A TECHNICAL SERVICE BULLETIN RELATED TO THIS. *TR
NHTSA ODI #10236791
Mileage unknown · Aug 3, 2008
Seat Belts
MY SEAT BELT REMINDER LIGHT DOES NOT COME ON WHEN STARTING THE VEHICLE NOR DOES IT CHIME WHEN YOU DON'T HAVE YOUR SEAT BELT ON LIKE THE OWNERS MANUAL SAYS IT SUPPOSE TO DO. *TR
NHTSA ODI #10236783
35,000 miles · Aug 1, 2008
Electrical System
SPEEDOMETER AND RPM GAUGE DO NOT WORK. THEY ARE COMPLETELY INACCURATE. FOR EXAMPLE, IT SHOW 120 MPH WHEN I'M GOING 50MPH. AT FIRST IT ONLY MESSED UP SOMETIMES. NOW IT IS NEVER ACCURATE. I HAVE NOT FIXED IT. FROM WHAT I HAVE RESEARCHED, MANY OTHER PEOPLE ARE HAVING THE SAME PROBLEM, BUT GM HAS NOT ISSUED A RECALL FOR THAT …
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SPEEDOMETER AND RPM GAUGE DO NOT WORK. THEY ARE COMPLETELY INACCURATE. FOR EXAMPLE, IT SHOW 120 MPH WHEN I'M GOING 50MPH. AT FIRST IT ONLY MESSED UP SOMETIMES. NOW IT IS NEVER ACCURATE. I HAVE NOT FIXED IT. FROM WHAT I HAVE RESEARCHED, MANY OTHER PEOPLE ARE HAVING THE SAME PROBLEM, BUT GM HAS NOT ISSUED A RECALL FOR THAT ON THE TRAILBLAZER (TO MY KNOWLEDGE). *TR
NHTSA ODI #10236588
Mileage unknown · Jul 11, 2008
Fuel System, Gasoline
AROUND 50K MILES THE SERVICE ENGINE LIGHT CAME ON. I TOOK THE VEHICLE TO THE DEALERSHIP. I WAS ASKED IF I HAD RECENTLY GOT GAS, WHEN I REPLIED YES, HE TOLD ME TO TIGHTEN THE GAS CAP AND THE LIGHT WOULD GO IF IN A FEW DAYS. THE LIGHT DID GO OFF BUT THE MECHANIC NEVER DOCUMENTED ANYTHING ABOUT MY VISIT. SEVERAL WEEKS LATER THE…
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AROUND 50K MILES THE SERVICE ENGINE LIGHT CAME ON. I TOOK THE VEHICLE TO THE DEALERSHIP. I WAS ASKED IF I HAD RECENTLY GOT GAS, WHEN I REPLIED YES, HE TOLD ME TO TIGHTEN THE GAS CAP AND THE LIGHT WOULD GO IF IN A FEW DAYS. THE LIGHT DID GO OFF BUT THE MECHANIC NEVER DOCUMENTED ANYTHING ABOUT MY VISIT. SEVERAL WEEKS LATER THE SERVICE ENGINE LIGHT CAME ON AGAIN. THINKING THAT IT WAS THE SAME SITUATION I TIGHTENED THE GAS CAP AND DID NOT GO BACK TO THE DEALERSHIP. THIS TIME THE SERVICE ENGINE LIGHT DID NOT GO OFF. I TOOK THE VEHICLE TO AN INDEPENDENT GARAGE TO GET IT CHECKED OUT AND THE RESULT WAS A MALFUNCTION IN THE FUEL SYSTEM. OFTEN TIMES I SMELL GAS VAPORS ESPECIALLY AFTER FUELING. RECENTLY I WAS PARKED ON A HILL AND GAS WAS DRIPPING FROM MY TANK. LOCAL DEALERSHIPS ACT AS IF THEY HAVE NEVER HEARD OF THE PROBLEM. MY WARRANTY HAS EXPIRED. *TR
NHTSA ODI #10233868
83,000 miles · Jul 7, 2008
Fuel System, Gasoline
I WAS SMELLING GAS FUMES COMING FROM MY '04 CHEVY TRAILBLAZER. AFTER SOME INVESTIGATION FOUND THAT THE FITTING GOING INTO THE FUEL TANK FROM THE FILL LINE IS LEAKING. THE CHECK ENGINE HAS BEEN ON FOR A WHILE. *TR
NHTSA ODI #10233459
Mileage unknown · Jul 5, 2008
Tires
BOUGHT AN EXPENSIVE SET OF TIRES FOR MY SUV (ROLLOVER CONCERN) WITHIN 1 YEAR THE VALVE STEMS INSTALLED WITH THE NEW TIRES WERE ROTTING AWAY AND ONE OF THEM DETERIORATED SO BADLY ALL THE AIR COME OUT INSTANTLY. THEY LOOKED PERFECT FROM THE OUTSIDE BUT PUSHING ON THEM CAUSED THE OTHERS TO RIP AS WELL. *TR
NHTSA ODI #10233219
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.
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