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 reports
85,000 miles · Jan 29, 2011
Electrical System
MY SPEEDOMETER FAILED AND READS ANYTHING IT WANTS. YOU CAN BE DOING 25MPH AND IT WILL READ 110MPH OR YOU CAN BE DOING 60MPH AND IT WILL REGISTER 45MPH. THERE ARE A MILLION COMPLAINTS ON THE INTERNET ABOUT GM SPEEDOMETERS AND OTHER INSTRUMENT CLUSTERS FAILING. I THINK THIS IS A SAFETY CONCERN AND SHOULD BE INVESTIGATED. GM IS JUS…
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MY SPEEDOMETER FAILED AND READS ANYTHING IT WANTS. YOU CAN BE DOING 25MPH AND IT WILL READ 110MPH OR YOU CAN BE DOING 60MPH AND IT WILL REGISTER 45MPH. THERE ARE A MILLION COMPLAINTS ON THE INTERNET ABOUT GM SPEEDOMETERS AND OTHER INSTRUMENT CLUSTERS FAILING. I THINK THIS IS A SAFETY CONCERN AND SHOULD BE INVESTIGATED. GM IS JUST PASSING THE BUCK WHEN YOU ASK FOR HELP. JUST GO TO GOOGLE AND ASK FOR GM INSTRUMENT CLUSTER FAILURE AND COUNT THE COMPLAINTS. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
NHTSA ODI #10380389
61,000 miles · Jan 27, 2011
Electrical System
INSTRUMENT PANEL MALFUNCTIONS. SPEEDOMETER AND TACHOMETER DISPLAY INACCURATE INFORMATION. SPEEDOMETER WILL REGISTER 60 MPH WHILE AT A RED LIGHT. TACHOMETER DOES NOT GO TO ZERO EVEN WHEN ENGINE IS OFF. *TR
NHTSA ODI #10379262
Mileage unknown · Jan 26, 2011
Electrical System
I HAVE SEEN ACROSS MANY WEBSITES THAT THE INSTRUMENT PANEL ON THE 2004 CHEVROLET TRAILBLAZERS MALFUNCTION. WELL, OUR VEHICLE IS HAVING THE SAME ISSUE. MY MECHANIC SAYS HE HAS SEEN SEVERAL SIMILAR PROBLEMS AND SAYS IT WILL COST ABOUT $600 TO REPAIR. HE SUGGESTED CONTACTING CHEVY, BUT I HAVE SEEN THAT CHEVY IS NOT INTERESTED IN…
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I HAVE SEEN ACROSS MANY WEBSITES THAT THE INSTRUMENT PANEL ON THE 2004 CHEVROLET TRAILBLAZERS MALFUNCTION. WELL, OUR VEHICLE IS HAVING THE SAME ISSUE. MY MECHANIC SAYS HE HAS SEEN SEVERAL SIMILAR PROBLEMS AND SAYS IT WILL COST ABOUT $600 TO REPAIR. HE SUGGESTED CONTACTING CHEVY, BUT I HAVE SEEN THAT CHEVY IS NOT INTERESTED IN RESOLVING THE PROBLEM. I FIGURED IF THEY ARE GETTING ENOUGH COMPLAINTS TO THE NTSB, MAYBE THEY WILL RECALL THE EQUIPMENT AND I CAN GET IT PROPERLY REPAIRED. *TR
NHTSA ODI #10378879
100,000 miles · Jan 26, 2011
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 70 MPH THE INSTRUMENT PANEL STOPPED FUNCTIONING. THE SPEEDOMETER DID NOT DISPLAY THE SPEED THAT THE VEHICLE WAS TRAVELING. THE FUEL GAUGE ALSO DID NOT DISPLAY THE CORRECT AMOUNT OF FUEL IN THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO THE DEALER TO BE RE…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 70 MPH THE INSTRUMENT PANEL STOPPED FUNCTIONING. THE SPEEDOMETER DID NOT DISPLAY THE SPEED THAT THE VEHICLE WAS TRAVELING. THE FUEL GAUGE ALSO DID NOT DISPLAY THE CORRECT AMOUNT OF FUEL IN THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO THE DEALER TO BE REPAIRED. THE DEALER STATED THAT THE CONTACT HAD TO PAY THE REPAIR COSTS. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 100,000.
NHTSA ODI #10378720
40,000 miles · Jan 26, 2011
Electrical System
GM IS HAVING AN ELECTRICAL ISSUE ON MANY 2004 VEHICLES RESULTING IN GRADUAL DETERIORATION OF INSTRUMENT CLUSTER PERFORMANCE. IT STARTS WITH THE SPEEDOMETER FAILING, READING 120 MPH WHILE SITTING AT A RED LIGHT. THEN THE FUEL GAUGE, LOW FUEL LIGHT WILL COME ON, THEN WHILE DRIVING TO A FUEL STATION IT WILL SLOWLY CLIMB TO 1/2 TANK…
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GM IS HAVING AN ELECTRICAL ISSUE ON MANY 2004 VEHICLES RESULTING IN GRADUAL DETERIORATION OF INSTRUMENT CLUSTER PERFORMANCE. IT STARTS WITH THE SPEEDOMETER FAILING, READING 120 MPH WHILE SITTING AT A RED LIGHT. THEN THE FUEL GAUGE, LOW FUEL LIGHT WILL COME ON, THEN WHILE DRIVING TO A FUEL STATION IT WILL SLOWLY CLIMB TO 1/2 TANK READING OR MORE. NEXT IS THE TACHOMETER, IT WILL BOUNCE FROM 2000 RPM TO OVER 6000 RPM (RED LINE) ALSO WHILE SITTING AT STOP SIGN OR PARKED IN A PARKING SPACE. FINALLY THE OIL AND COOLANT TEMPERATURE GAUGES READ HOT (PAST RED LINE) AT INITIAL START UP FROM SITTING 12 HOURS IN -3 DEGREE WEATHER. AN ONLINE SEARCH HAS FOUND NUMEROUS COMPLAINTS OF THE SAME PROBLEM AROUND THE UNITED STATES EXTENDING BEYOND THE TRAILBLAZER TO OTHER VEHICLES. THIS SAME ISSUE WAS RECALLED ON GM TRUCKS BUT THE OTHER VEHICLES. THE VEHICLE OPERATOR HAS NO ACCURATE IDEA OF MPH, RPM, OIL OR WATER TEMPERATURE AND BATTERY CHARGE. THE AVERAGE REPAIR COST TO REPLACE THE BAD COMPUTER BOARD IS $500 TO $1000. *TR
NHTSA ODI #10378708
45,000 miles · Jan 24, 2011
Electrical System
INSTRUMENT CLUSTER KEEPS BREAKING. *TR
NHTSA ODI #10378417
125,000 miles · Jan 24, 2011
Fuel System, GasolineVehicle Speed Control
TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THE CRUISE CONTROL AS WELL AS THE FUEL GAUGE NO LONGER FUNCTIONED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE CONTACT WAS TOLD THEY DO NOT KNOW HOW TO REMEDY THE FAILURES. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 100,000 AND THE CURRE…
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TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THE CRUISE CONTROL AS WELL AS THE FUEL GAUGE NO LONGER FUNCTIONED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE CONTACT WAS TOLD THEY DO NOT KNOW HOW TO REMEDY THE FAILURES. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 100,000 AND THE CURRENT MILEAGE WAS 115,000.
NHTSA ODI #10378404
25,000 miles · Jan 20, 2011
Electrical System
INSTRUTMENT CLUSTER DOES NOT WORK AT TIMES....DOOR LOCKS LOCK AND UNLOCK BY THEIRSELVES AT TIMES...BEEN HAPPENING FOR A LONG TIME...
NHTSA ODI #10378949
70,000 miles · Jan 19, 2011
Electrical System
SPEEDOMETER, TACHOMETER NOT WORKING AND HAVE NOT BEEN FOR OVER 1 YR. OTHER GAUGES WORK WHEN THEY WANT TO. WILL COST TOO MUCH TO TAKE TO DEALER TO GET FIXED AND HAVE HEARD THAT THERE ARE LOTS OF OTHER VEHICLES SAME YR HAVING SAME ISSUES. THEY SHOULD DO A RECALL ON THESE TO FIX. *TR
NHTSA ODI #10377200
68,000 miles · Jan 17, 2011
Unknown Or Other
THE SPEEDOMETER QUIT READING CORRECTLY. AT SOME TIMES IT WOULD READ 100 MPH WHEN DOING 30 MPH. IT THEN WORSENED TO THE POINT WHERE IT IS AT NOW. THE SPEEDOMETER DOES NOT WORK AT ALL. THE TACHOMETER HAS MALFUNCTIONED THE SAME WAY AS WELL. THIS HAS TO BE A SAFETY ISSUE SINCE THE DRIVER HAS NO WAY OF TRULY KNOWING HOW FAST THEY…
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THE SPEEDOMETER QUIT READING CORRECTLY. AT SOME TIMES IT WOULD READ 100 MPH WHEN DOING 30 MPH. IT THEN WORSENED TO THE POINT WHERE IT IS AT NOW. THE SPEEDOMETER DOES NOT WORK AT ALL. THE TACHOMETER HAS MALFUNCTIONED THE SAME WAY AS WELL. THIS HAS TO BE A SAFETY ISSUE SINCE THE DRIVER HAS NO WAY OF TRULY KNOWING HOW FAST THEY ARE DRIVING. I HAVE CONTACTED CHEVROLET ABOUT THIS ISSUE, AND THEY REFUSE TO SEE THAT THOUSANDS OF THESE VEHICLES ARE HAVING THE SAME PROBLEM. THERE SHOULD BE A SAFETY RECALL NOW.
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.
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
4
RQ17002 · 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.
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.
2004 Chevrolet Trailblazer Problems, Complaints & Recalls | Skip That Year
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