NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports117,650 miles · Nov 11, 2009
Electrical System
SPEEDOMETER NOT INDICATING CORRECTLY ON 2004 CHEVY TRAILBLAZER. GM WILL NOT COVER REPLACEMENT COST OF INSTRUMENT CLUSTER EVEN THOUGH THEY HAVE RECALLED FULL SIZE PICKUPS AND SUVS FOR SAME PROBLEM. MANY COMPLAINTS FOR SAME PROBLEM REGISTERED ON VARIOUS INTERNET SITES. CANNOT TELL CORRECT SPEED VEHICLE IS TRAVELING, AND NOT CONFID…
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SPEEDOMETER NOT INDICATING CORRECTLY ON 2004 CHEVY TRAILBLAZER. GM WILL NOT COVER REPLACEMENT COST OF INSTRUMENT CLUSTER EVEN THOUGH THEY HAVE RECALLED FULL SIZE PICKUPS AND SUVS FOR SAME PROBLEM. MANY COMPLAINTS FOR SAME PROBLEM REGISTERED ON VARIOUS INTERNET SITES. CANNOT TELL CORRECT SPEED VEHICLE IS TRAVELING, AND NOT CONFIDENT IN OTHER SYSTEM INDICATORS ON INSTRUMENT PANEL. *TR
NHTSA ODI #10291899
59,599 miles · Nov 11, 2009
Fuel System, Gasoline
2004 CHEVROLET TRAILBLAZER LT LEAKING GAS & FUMES WHERE FILLER NECK JOINS TANK. HAVE LEARNED ONLINE THAT THERE ARE MANY PEOPLE HAVING THE SAME PROBLEM. DEALER AND GM WILL DO NOTHING TO HELP ME PAY FOR THE REPAIRS. I PAID $1350.00 TO HAVE A NEW GAS TANK INSTALLED. THIS MUST BE A DEFECT. I HAD MY VEHICLE CHECKED SEVERAL TIMES FOR …
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2004 CHEVROLET TRAILBLAZER LT LEAKING GAS & FUMES WHERE FILLER NECK JOINS TANK. HAVE LEARNED ONLINE THAT THERE ARE MANY PEOPLE HAVING THE SAME PROBLEM. DEALER AND GM WILL DO NOTHING TO HELP ME PAY FOR THE REPAIRS. I PAID $1350.00 TO HAVE A NEW GAS TANK INSTALLED. THIS MUST BE A DEFECT. I HAD MY VEHICLE CHECKED SEVERAL TIMES FOR THE SERVICE ENGINE SOON LIGHT IN THE PAST. ONE OCCASION WAS THE FUEL CAP AND ON ANOTHER THEY COULD FIND NO CODE. THIS SHOULD BE COVERED. THEY KNOW THEY HAVE A PROBLEM. MY EXTENDED WARRANTY RAN OUT 26 DAYS BEFORE THIS HAPPENED. *TR THANK YOU
NHTSA ODI #10291890
63,500 miles · Nov 4, 2009
Electrical System
2004 CHEVROLET TRAILBLAZER INSTRUMENT CLUSTER INTERMITTENTLY WORKS. SOMETIMES ONE THING WORKS, SOMETIMES NONE, SOMETIMES ALL. ABS LIGHT FLASHES ON AND OFF CAUSING WARNING BELL TO RING INTERMITTENTLY. I FELL THAT THIS IS UNSAFE SINCE THE SPEEDOMETER WILL NOT WORK. I HAVE TALKED WITH OTHERS THAT HAVE HAD SIMILAR PROBLEMS. *TR
NHTSA ODI #10290997
61,000 miles · Nov 4, 2009
Electrical System
MY INSTRUMENT PANEL ABS, AIRBAG, BATTERY, AND BRAKE LIGHTS ALL CAME ON WITH THE TEMPERATURE, FUEL, BATTER VOLTAGE, AND OIL PRESSURE GAUGES NOT WORKING. AFTER A FEW DAYS MY BATTERY WENT DEAD. REPLACED THE BATTERY THINKING THIS WAS CAUSING THE PROBLEM THEN NONE OF GAUGES WORKED AND ALL THE PANEL LIGHTS WERE OFF. NOTHING WAS HAPPEN…
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MY INSTRUMENT PANEL ABS, AIRBAG, BATTERY, AND BRAKE LIGHTS ALL CAME ON WITH THE TEMPERATURE, FUEL, BATTER VOLTAGE, AND OIL PRESSURE GAUGES NOT WORKING. AFTER A FEW DAYS MY BATTERY WENT DEAD. REPLACED THE BATTERY THINKING THIS WAS CAUSING THE PROBLEM THEN NONE OF GAUGES WORKED AND ALL THE PANEL LIGHTS WERE OFF. NOTHING WAS HAPPENING ON THE INSTRUMENT PANEL. STARTED THE CAR THE NEXT DAY AND HAD ORIGINAL PROBLEM. DEALER CHECKED IT OUT AND RECOMMENDED A NEW INSTRUMENT PANEL CLUSTER MODULE AT ABOUT $475 INSTALLED. VERY BIG SAFETY ISSUE IF YOU CAN'T TELL WHAT'S GOING ON WITH YOUR CAR LIKE GAS LEVEL AND ENGINE TEMPERATURE. *TR
NHTSA ODI #10290963
Mileage unknown · Nov 4, 2009
Visibility
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE THE VEHICLE WAS STATIONARY IN A PARKING LOT THE LIFT-GATE WINDOW EXPLODED OUTWARDLY. WHEN THE FAILURE OCCURRED THERE WERE NO OCCUPANTS IN THE VEHICLE. THERE WERE NO PERSONAL INJURIES. THE POLICE WAS NOTIFIED; HOWEVER, NO POLICE REPORT WAS FILED. THE VEHICLE HAS NOT BEEN R…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE THE VEHICLE WAS STATIONARY IN A PARKING LOT THE LIFT-GATE WINDOW EXPLODED OUTWARDLY. WHEN THE FAILURE OCCURRED THERE WERE NO OCCUPANTS IN THE VEHICLE. THERE WERE NO PERSONAL INJURIES. THE POLICE WAS NOTIFIED; HOWEVER, NO POLICE REPORT WAS FILED. THE VEHICLE HAS NOT BEEN REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE UNKNOWN. UPDATED 02/19/10. *LJ UPDATED 02/19/10 UPDATED 05/05/10.*JB
NHTSA ODI #10290911
80,000 miles · Oct 28, 2009
Electrical System
SPEEDOMETER WILL INTERMITTENTLY SHOW SPEED MUCH FASTER THAN ACTUAL SPEED. FOR EXAMPLE, SHOWING 120+ MPH WHEN ONLY GOING 40MPH. *TR
NHTSA ODI #10290077
85,000 miles · Oct 28, 2009
Exterior Lighting
STARTED THE VEHICLE (AT NIGHT), LOW BEAM HEADLIGHTS WERE NOT WORKING. FUSES WERE CHECKED, THEY WERE FINE. *TR
NHTSA ODI #10290074
65,135 miles · Oct 27, 2009
Electrical System
SPEEDOMETER ON MY 2004 CHEVROLET TRAILBLAZER LT IS DISPLAYING ERRATIC READINGS. WHEN THE VEHICLE IS PARKED THE SPEEDOMETER IS SHOWING THE VEHICLE IS MOVING AT 40 MPH. WHEN DRIVING AT SPEEDS APPROXIMATELY 40 MPH THE SPEEDOMETERS SHOWS THE VEHICLE IS MOVING AT 90 MPH. MULTIPLE POSTS REGARDING THIS ISSUE ONLINE. FAULTY INSTRUMENT…
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SPEEDOMETER ON MY 2004 CHEVROLET TRAILBLAZER LT IS DISPLAYING ERRATIC READINGS. WHEN THE VEHICLE IS PARKED THE SPEEDOMETER IS SHOWING THE VEHICLE IS MOVING AT 40 MPH. WHEN DRIVING AT SPEEDS APPROXIMATELY 40 MPH THE SPEEDOMETERS SHOWS THE VEHICLE IS MOVING AT 90 MPH. MULTIPLE POSTS REGARDING THIS ISSUE ONLINE. FAULTY INSTRUMENT CLUSTERS ON THESE VEHICLES. ALSO, BEFORE THE SPEEDOMETER BEGAN SHOWING ERRATIC READINGS TODAY, THE SPEEDOMETER DIDN'T MOVE SMOOTHLY. WHEN ACCELERATING THE SPEEDOMETER MOVED ONE TICK AT A TIME, SIMILAR TO HOW THE SECOND HAND ON A CLOCK MOVES. THE NEXT TIME I GOT IN THE CAR AFTER THIS HAPPENED IS WHEN THE SPEEDOMETER STARTED SHOWING INACCURATE SPEED RATINGS. THIS IS A SAFETY ISSUE SINCE YOU CAN NOT TELL HOW FAST THE VEHICLE IS TRAVELING. MY VEHICLE CURRENTLY HAS 65,000 MILES. I PURCHASED IT 2.5 YEARS AGO WHEN IT HAD 29,000 MILES AT CARMAX. I HAVEN'T HAD THE VEHICLE REPAIRED YET, BUT ALL POSTS I HAVE READ ONLINE INDICATE THAT THE ENTIRE INSTRUMENT PANEL WILL NEED TO BE REPLACED. *TR
NHTSA ODI #10290052
20,000 miles · Oct 25, 2009
Electrical System
ENTIRE INSTRUMENT PANEL NOT WORKING IN MY 2004 CHEVROLET TRAILBLAZER. FIRST INCIDENT 10/16/2009, CORRECTED ITSELF WITHIN 10 MINS. STOPPED WORKING AGAIN 10/25/2009, NO SELF CORRECTION THIS TIME, NOT WORKING AT ALL. CALLING CHEVY DEALERSHIP TOMORROW. *TR
NHTSA ODI #10289732
122,000 miles · Oct 21, 2009
Exterior Lighting
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 45 MPH WITH THE AUTOMATIC HEADLIGHTS ON, THE LOW BEAM HEADLIGHTS FAILED WITHOUT WARNING. THE CONTRACT DROVE INTO THE EMERGENCY LANE AND TURNED THE HIGH BEAMS ON. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR INSPECTION. THE TECHNICIAN WAS UNABLE TO DUPLICATE…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 45 MPH WITH THE AUTOMATIC HEADLIGHTS ON, THE LOW BEAM HEADLIGHTS FAILED WITHOUT WARNING. THE CONTRACT DROVE INTO THE EMERGENCY LANE AND TURNED THE HIGH BEAMS ON. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR INSPECTION. THE TECHNICIAN WAS UNABLE TO DUPLICATE THE FAILURE. THE VEHICLE HAS NOT BEEN REPAIRED FOR THE MALFUNCTION. THE FAILURE MILEAGE WAS 122,000. THE CURRENT MILEAGE WAS 124,000.
NHTSA ODI #10289259
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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