NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports60,000 miles · Apr 3, 2010
Electrical System
I HAVE A 2004 CHEVROLET TRAILBLAZER. THE INSTRUMENT PANEL ONLY WORKS INTERMITTENTLY. I HAVE CHECKED THE INTERNET AND THIS SEEMS TO BE ONE OF THE MOST NUMEROUS COMPLAINTS. I FEEL AS IF THIS PRESENT A SAFETY HAZARD. SINCE THIS IS YOUR JOB TO PROTECT THE PUBLIC FROM DEFECTIVE AUTOMOBILES I FEEL YOU SHOULD INVESTIGATE THIS MATTE…
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I HAVE A 2004 CHEVROLET TRAILBLAZER. THE INSTRUMENT PANEL ONLY WORKS INTERMITTENTLY. I HAVE CHECKED THE INTERNET AND THIS SEEMS TO BE ONE OF THE MOST NUMEROUS COMPLAINTS. I FEEL AS IF THIS PRESENT A SAFETY HAZARD. SINCE THIS IS YOUR JOB TO PROTECT THE PUBLIC FROM DEFECTIVE AUTOMOBILES I FEEL YOU SHOULD INVESTIGATE THIS MATTER. THANK YOU. RANDALL SALTINK
NHTSA ODI #10323578
Mileage unknown · Apr 1, 2010
Electrical System
SPEEDOMETER SLOWLY STOPPED WORKING THEN ALL THE OTHER GAUGES FAILED. THE GAUGES DO NOT WORK INCLUDING THE SPEEDOMETER, RPM GAUGES, GAS LEVEL, OIL LEVEL, BATTERY LEVEL AND ALSO TEMPERATURE GAUGE DOES NOT WORK. THE FAILURE IS ALWAYS WHILE DRIVING NEVER HAVE THE WORKED SINCE THE FIRST INCIDENCE.
NHTSA ODI #10323416
77,200 miles · Apr 1, 2010
Equipment
ALL OF MY GAUGES ON MY DASHBOARD COMPLETELY TURN OFF AND THEN RANDOMLY TURN BACK ON. IT IS VERY DANGEROUS TO DRIVE AROUND WITH NO SPEEDOMETER, GAS GAUGE, OLIL, BATTERY, TACHOMETER OR ODOMETER ON. THEN IT ALL OF A SUDDEN WILL TURN ON. IT NEEDS TO BE RECALLED. I TOOK IT TO A REPAIR SHOP AND THEY SAID IT WOULD COST AROUND $500 …
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ALL OF MY GAUGES ON MY DASHBOARD COMPLETELY TURN OFF AND THEN RANDOMLY TURN BACK ON. IT IS VERY DANGEROUS TO DRIVE AROUND WITH NO SPEEDOMETER, GAS GAUGE, OLIL, BATTERY, TACHOMETER OR ODOMETER ON. THEN IT ALL OF A SUDDEN WILL TURN ON. IT NEEDS TO BE RECALLED. I TOOK IT TO A REPAIR SHOP AND THEY SAID IT WOULD COST AROUND $500 IF NOT MORE TO HAVE THEM TAKE APART MY DASH AND LOOK AND THEN POSSIBLY SEND IT OUT TO SEEIF IT CAN BE FI.XED THERE ARE NUMEROUS PEOPLE I HAVE FOUND ONLINE WITH THIS SAME PROBLEM WITH THE SAME VEHICLE.
NHTSA ODI #10323351
63,000 miles · Mar 29, 2010
Electrical System
I JUST BOUGHT A USED '04 TRAILBLAZER WITH 63000 MILES AND THE SPEEDOMETER IS NOT WORKING PROPERLY...THE NEEDLE IS JUST POINTING SOUTH! *CN
NHTSA ODI #10322718
101,000 miles · Mar 25, 2010
Exterior Lighting
2004 CHEVROLET TRAILBLAZER, WHILE DRIVING AT NIGHT THE LOW BEAM LIGHTS WENT OUT, I HAD TO DRIVE HOME WITH HIGH BEAMS ON, THIS IS A MAJOR CONCERN, IT IS UNSAFE ON THE ROAD. IT HAS HAPPEN SEVERAL TIME, THEY USUALLY COME BACK ON, BUT NOT THIS TIME.
NHTSA ODI #10322223
47,717 miles · Mar 25, 2010
Electrical SystemUnknown Or Other
2004 TRAILBLAZER WHEN STOPPING DOORS AND WINDOWS WON,T OPEN AT TIMES,EVEN WHEN PUSHING UNLOCK BUTTON.TRAPPED INSIDE. STOPPING AND STARTING ENGINES SEEMS TO FINALLY UNLOCK DOORS,CARRYING HAMMER TO BUST OUT WINDOWS IN CASE OF EMERGENCY FIRE ECT.REPAIR OF ELECTRIAL EQUIMENT BY MAHER ST PETE FL. NOW OK
NHTSA ODI #10322090
120,000 miles · Mar 24, 2010
Electrical System
TACHOMETER AND SPEEDOMETER STARTED INTERMITTANTLY FAILING. UNIT IS FAILED MORE OFTEN THAN IT WORKS. UNIT HAS NOT BEEN REPAIRED AT THIS TIME.
NHTSA ODI #10321884
62,000 miles · Mar 23, 2010
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. HE STATED THAT THE INSTRUMENT PANEL WOULD INTERMITTENTLY FAIL. HE VERIFIED THAT THE SPEEDOMETER AND FUEL LEVEL INDICATOR WOULD NOT READ PROPERLY. THERE WERE ALSO OTHER RANDOM WARNING LIGHTS THAT WOULD ILLUMINATE SPORADICALLY. THE DEALER STATED THAT THE VEHICLE COULD BE REPAIRED A…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. HE STATED THAT THE INSTRUMENT PANEL WOULD INTERMITTENTLY FAIL. HE VERIFIED THAT THE SPEEDOMETER AND FUEL LEVEL INDICATOR WOULD NOT READ PROPERLY. THERE WERE ALSO OTHER RANDOM WARNING LIGHTS THAT WOULD ILLUMINATE SPORADICALLY. THE DEALER STATED THAT THE VEHICLE COULD BE REPAIRED AT THE OWNERS EXPENSE. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 62,000 AND THE CURRENT MILEAGE WAS 63,500. UPDATED 05/13/10. *LJ
NHTSA ODI #10321574
17,008 miles · Mar 22, 2010
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT NOTICED THAT THE TACHOMETER BEGAN MOVING ERRATICALLY WHILE DRIVING 10 MPH AND THEN IT STOPPED FUNCTIONING. THE VEHICLE WAS TAKEN TO THE DEALER WHO REPLACED THE DASHBOARD CLUSTER ASSEMBLY. THE FAILURE MILEAGE WAS 17008 AND THE CURRENT MILEAGE WAS 17185.
NHTSA ODI #10321381
70,000 miles · Mar 21, 2010
Electrical System
2004 CHEVY TRAILBLAZER INSTRUMENT CLUSTER PROBLEMS. VEHICLE ONLY HAS 70K MILES. GAUGES FREQUENTLY READ INCORRECT READINGS. THE COOLANT TEMPERATURE GAUGE HAS TAKEN A DEEP DIVE AND HAS PEGGED OUT AS FAR AS IT CAN GO AND DOES NOT MOVE NOW. MOST INSTRUMENT BACKLIGHTS HAVE BURNED OUT PREVENTING THE SPEEDOMETER AND OTHER GAUGES FROM B…
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2004 CHEVY TRAILBLAZER INSTRUMENT CLUSTER PROBLEMS. VEHICLE ONLY HAS 70K MILES. GAUGES FREQUENTLY READ INCORRECT READINGS. THE COOLANT TEMPERATURE GAUGE HAS TAKEN A DEEP DIVE AND HAS PEGGED OUT AS FAR AS IT CAN GO AND DOES NOT MOVE NOW. MOST INSTRUMENT BACKLIGHTS HAVE BURNED OUT PREVENTING THE SPEEDOMETER AND OTHER GAUGES FROM BEING SEEN AT NIGHT. VERY DANGEROUS. QUICK SEARCH ON INTERNET RESULTS IN A SEVERE EPIDEMIC OF THIS PROBLEM WITH ALL GM SUV'S. A CLASS ACTION LAWSUIT RESULTED IN A NATIONWIDE RECALL FOR THIS PROBLEM FOR ALL SIMILAR VEHICLES BUT NOT THE CHEVY TRAILBLAZER OR GMC ENVOY. THIS SEEMS TO BE A CRIMINAL ACT BY GM. SOMETHING NEEDS TO BE DONE TO PROTECT OWNERS OF THESE VEHICLES. *TR
NHTSA ODI #10321224
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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