NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
627 reportsClear category filter70,000 miles · Sep 8, 2009
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 10-15 MPH, THE VEHICLE STARTED TO LOOSE POWER. OCCASIONALLY THE VEHICLE SHUT OFF, THE BATTERY AND RPM GAUGES ALSO STOPPED WORKING. THE CONTACT FEELS IS AWARE OF THE SAFETY RISK SINCE THE VEHICLE SHUT OFF WITHOUT WARNING WHICH COULD RESULT IN A CRASH. THE CURRENT MIL…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 10-15 MPH, THE VEHICLE STARTED TO LOOSE POWER. OCCASIONALLY THE VEHICLE SHUT OFF, THE BATTERY AND RPM GAUGES ALSO STOPPED WORKING. THE CONTACT FEELS IS AWARE OF THE SAFETY RISK SINCE THE VEHICLE SHUT OFF WITHOUT WARNING WHICH COULD RESULT IN A CRASH. THE CURRENT MILEAGE WAS 90,000 AND THE FAILURE MILEAGE WAS 70,000.
NHTSA ODI #10283345
45,000 miles · Sep 6, 2009
Electrical System
I OWN A 2004 CHEVY TRAILBLAZER, MY INSTRUMENT CLUSTER STOPPED WORKING A COUPLE OF MONTHS AFTER I BOUGHT IS USED. WHILE LOOKING AT OTHER WEB SITE AND DOING A SEARCH I HAVE NOTICED THAT I AM NOT THE ONLY ONE. I HAVE NOT HAD A REPAIR DONE DO TO THE COST OF THE PART. EXACT PROBLEMS ARE, THE GAS GAUGE DOES "FLOATS" THE OIL PRESSURE G…
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I OWN A 2004 CHEVY TRAILBLAZER, MY INSTRUMENT CLUSTER STOPPED WORKING A COUPLE OF MONTHS AFTER I BOUGHT IS USED. WHILE LOOKING AT OTHER WEB SITE AND DOING A SEARCH I HAVE NOTICED THAT I AM NOT THE ONLY ONE. I HAVE NOT HAD A REPAIR DONE DO TO THE COST OF THE PART. EXACT PROBLEMS ARE, THE GAS GAUGE DOES "FLOATS" THE OIL PRESSURE GAUGE DOES NOT READ THE SPEEDOMETER IS NON-FUNCTIONAL. *TR
NHTSA ODI #10283033
70,000 miles · Aug 17, 2009
Electrical SystemService Brakes, Hydraulic
HAD P0128 CODE FOR ABOUT 1 YEAR. REPLACED THERMOSTAT AFTER P1680 CODE, REDUCED ENGINE POWER LIGHT CAME ON. REDUCED ENGINE POWER LIGHT WENT AWAY ON NEXT CRANK UP TO MOVE VEHICLE AND CHANGE THERMOSTAT. ABS AND BRAKE LIGHTS BOTH ON INTERMITTENTLY. TACHOMETER HAS BEEN STICKING AND SPEEDOMETER SHOWED ERRATIC SIGNS AROUND 55 MPH. …
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HAD P0128 CODE FOR ABOUT 1 YEAR. REPLACED THERMOSTAT AFTER P1680 CODE, REDUCED ENGINE POWER LIGHT CAME ON. REDUCED ENGINE POWER LIGHT WENT AWAY ON NEXT CRANK UP TO MOVE VEHICLE AND CHANGE THERMOSTAT. ABS AND BRAKE LIGHTS BOTH ON INTERMITTENTLY. TACHOMETER HAS BEEN STICKING AND SPEEDOMETER SHOWED ERRATIC SIGNS AROUND 55 MPH. NOW ALL GAUGES GOING WACKO OR NOT WORKING AT ALL AT TIMES. TEMPERATURE GAUGE WRAPPED COMPLETELY AROUND WITHOUT EVEN STARTING COLD ENGINE. ABOUT A MILE LATER, INSTRUMENT PANEL LIT COMPLETELY UP THEN WENT AWAY, GAUGES RESET, AND RAN FINE WITH PROPERLY OPERATING INSTRUMENT PANEL... AT LEAST UNTIL I GOT HOME. THEN WACKO STUFF AGAIN. RESET PCM BY DISCONNECTING BATTERY CABLE, NOW THINGS SEEM FINE... FOR NOW. I'M TOLD TO REDO BAD GROUND ON ECBM BEFORE SUSPECTING BAD ABS MODULE AND TO REPLACE IGNITION SWITCH BEFORE SUSPECTING BAD INSTRUMENT CLUSTER AND PCM. HOWEVER, DEALER ANALYSIS SAID ABS MODULE GOT MOISTURE IN IT AND THE INSTRUMENT PANEL NEEDS TO BE REPLACE. FIRST IS A $1000 ABS MODULE, SECOND IS A $400 PANEL, BOTH HAVE LABOR CHARGES ADDITIONAL. *TR
NHTSA ODI #10280604
70,000 miles · Aug 15, 2009
Electrical System
INCIDENT, 2004 TRAILBLAZER GAUGES ARE NOT WORKING. STARTED WITH TACH, THEN SPEED, NOW OIL, BATTERY, TEMP GAUGES NOT WORKING (ALL OVER THE PLACE WITH READINGS). GAS GAUGE OCCASIONALLY NOT WORKING. UNDERSTAND 2002-2003 ARE UNDER RECALL. 2004 NEEDS TO BE ADDED. *TR
NHTSA ODI #10280504
29,000 miles · Aug 13, 2009
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. IN JULY OF 2009, THE SPEEDOMETER BEGAN TO FAIL. ON ONE OCCASION, WHILE DRIVING BETWEEN 20-30 MPH, THE SPEEDOMETER REGISTERED 90 MPH. THE SECOND FAILURE OCCURRED WHILE DRIVING 55 MPH AND THE SPEEDOMETER DISPLAYED 30 MPH. THE CONTACT REPLACED THE BATTERY, BUT THE FAILURE WAS NO…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. IN JULY OF 2009, THE SPEEDOMETER BEGAN TO FAIL. ON ONE OCCASION, WHILE DRIVING BETWEEN 20-30 MPH, THE SPEEDOMETER REGISTERED 90 MPH. THE SECOND FAILURE OCCURRED WHILE DRIVING 55 MPH AND THE SPEEDOMETER DISPLAYED 30 MPH. THE CONTACT REPLACED THE BATTERY, BUT THE FAILURE WAS NOT CORRECTED. SHE TOOK THE VEHICLE TO THE DEALER AND THEY REPROGRAMMED THE COMPUTER, WHICH CORRECTED THE ISSUE FOR A FEW MONTHS. THE CONTACT WILL TAKE THE VEHICLE BACK TO THE DEALER. REPORT NUMBER 71-749316845 WAS FILED WITH THE MANUFACTURER AND THEY STATED THAT SHE WILL NOT BE CHARGED THE TOTAL PRICE FOR THE REPAIR AT THE DEALER. THE CURRENT AND FAILURE MILEAGES WERE 29,000.
NHTSA ODI #10280369
47,000 miles · Aug 5, 2009
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 60 MPH, THE INSTRUMENT PANEL GAUGES BLINKED ON AND OFF, FAILED COMPLETELY, AND THEN RETURNED TO NORMAL. THERE WAS NO WARNING PRIOR TO THE FAILURE. THE VEHICLE WAS TAKEN TO THE DEALER AND THEY STATED THAT THE INSTRUMENT CLUSTER FAILED. THE REPAIR WOULD COST $100.…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 60 MPH, THE INSTRUMENT PANEL GAUGES BLINKED ON AND OFF, FAILED COMPLETELY, AND THEN RETURNED TO NORMAL. THERE WAS NO WARNING PRIOR TO THE FAILURE. THE VEHICLE WAS TAKEN TO THE DEALER AND THEY STATED THAT THE INSTRUMENT CLUSTER FAILED. THE REPAIR WOULD COST $100. THE VEHICLE IS CURRENTLY BEING REPAIRED. THE CONTACT CALLED THE MANUFACTURER AND WAS INFORMED THAT NO COMPENSATION WOULD BE PROVIDED BECAUSE THE FAILURE WAS NOT COVERED UNDER WARRANTY OR RECALL. THE FAILURE MILEAGE WAS 47,000 AND CURRENT MILEAGE WAS 47,500. UPDATED 08/28/09 *BF UPDATED 08/31/09.*JB
NHTSA ODI #10279448
34,655 miles · Jul 31, 2009
Electrical System
SPEEDOMETER IS INACCURATE. WHEN STANDING STILL, IT COULD READ 100MPH. WHEN 55MPH, IT MAY READ 20MPH. I'VE HEARD MANY TRAILBLAZERS HAVE THIS PROBLEM. MAKES IT VERY DIFFICULT TO DRIVE THE CORRECT SPEED LIMIT. TOO IN AREAS WHERE IT'S DANGEROUS OR TOO SLOW ALSO CAUSES PROBLEMS WITH PEOPLE TRYING TO PASS. HELP! *TR
NHTSA ODI #10278874
38,297 miles · Jul 24, 2009
Electrical System
ALL THE GAUGES EXCEPT THE SPEEDOMETER OF MY 2004 CHEVY TRAIL BLAZER WENT OUT. *TR
NHTSA ODI #10278242
55,000 miles · Jul 23, 2009
Electrical System
MY SPEEDOMETER AND TACHOMETER DO NOT WORK ON MY 2004 CHEVY TRAILBLAZER. OCCASIONALLY MY CHECK ENGINE LIGHT WILL STAY ON AS WELL. *TR
NHTSA ODI #10278055
52,000 miles · Jul 20, 2009
Electrical System
ALL DASH COMPONENTS INTERMITTENT FOR A FEW DAYS, NOW ALL GAUGES INOPERATIVE. UNABLE TO DETERMINE SPEED, ENGINE CONDITION, GAS LEVEL. *TR
NHTSA ODI #10277481
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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