NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
627 reportsClear category filter90,000 miles · Oct 21, 2010
Electrical System
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT BELIEVED HE WAS DRIVING APPROXIMATELY 45 MPH WHEN HE NOTICED HE WAS PASSING ALL OF THE OTHER VEHICLES ON THE ROADWAY. HE THEN REALIZED THAT THE SPEEDOMETER WAS DISPLAYING AN IMPROPER READING. THE FAILURE PERSISTED AND PROGRESSIVELY BECAME WORSE. THE VEHICLE WAS NOT…
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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT BELIEVED HE WAS DRIVING APPROXIMATELY 45 MPH WHEN HE NOTICED HE WAS PASSING ALL OF THE OTHER VEHICLES ON THE ROADWAY. HE THEN REALIZED THAT THE SPEEDOMETER WAS DISPLAYING AN IMPROPER READING. THE FAILURE PERSISTED AND PROGRESSIVELY BECAME WORSE. THE VEHICLE WAS NOT TAKEN TO BE EXAMINED FOR THE CAUSE OF FAILURE AND WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 90,000.
NHTSA ODI #10361518
79,000 miles · Oct 13, 2010
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 55 MPH THE CONTACT NOTICED THAT THE SPEEDOMETER WAS NO LONGER WORKING PROPERLY. HE STATED THAT HE COULD NO LONGER TELL WHAT SPEED THE VEHICLE WAS TRAVELING. THE FAILURE HAD OCCURRED FOR ALMOST A YEAR. THE VEHICLE WAS NOT TAKEN TO AN AUTHORIZED DEALER FOR THE FAILURE…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 55 MPH THE CONTACT NOTICED THAT THE SPEEDOMETER WAS NO LONGER WORKING PROPERLY. HE STATED THAT HE COULD NO LONGER TELL WHAT SPEED THE VEHICLE WAS TRAVELING. THE FAILURE HAD OCCURRED FOR ALMOST A YEAR. THE VEHICLE WAS NOT TAKEN TO AN AUTHORIZED DEALER FOR THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 79,000 AND THE CURRENT MILEAGE WAS 86,000.
NHTSA ODI #10360239
Mileage unknown · Oct 1, 2010
Electrical System
WAS DRIVING AND MY SPEEDOMETER STARTED ACTING UP....GIVING WRONG READINGS AND SAYING I WAS GOING 80 MPH WHEN I WAS STOPPED ALL TOGETHER. NO IT IS PERMANENTLY STUCK ON MY 2004 TRAILBLAZER. *TR
NHTSA ODI #10358568
120,000 miles · Sep 30, 2010
Electrical SystemFuel System, Gasoline
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 55 MPH, THE SPEEDOMETER INDICATED A SPEED OF 0 MPH. EACH TIME SHE OPERATED THE VEHICLE, THE CONTACT STATED THAT THE SPEEDOMETER WOULD DISPLAY AN IMPROPER READING. THE VEHICLE WAS TAKEN TO A LOCAL REPAIR SHOP WHERE IT WAS REPAIRED. THREE DAYS LATER, THE FAILURE OCCUR…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 55 MPH, THE SPEEDOMETER INDICATED A SPEED OF 0 MPH. EACH TIME SHE OPERATED THE VEHICLE, THE CONTACT STATED THAT THE SPEEDOMETER WOULD DISPLAY AN IMPROPER READING. THE VEHICLE WAS TAKEN TO A LOCAL REPAIR SHOP WHERE IT WAS REPAIRED. THREE DAYS LATER, THE FAILURE OCCURRED AGAIN. IN ADDITION TO THE SPEEDOMETER, THE FUEL GAUGE ALSO GAVE INCORRECT READINGS ON THE FUEL LEVEL AND THE RPM GAUGE ALSO DISPLAYED INCORRECT READINGS. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE CONTACT WAS INFORMED THAT THE FUEL TANK HAD TO BE REMOVED AND THE RPM GAUGE FAILURE HAD BEEN REPAIRED THREE TIMES. THE PROBLEMS HAD NOT BEEN REMEDIED. THE FAILURE MILEAGE WAS APPROXIMATELY 120,000 AND THE CURRENT MILEAGE WAS APPROXIMATELY 142,000.
NHTSA ODI #10358402
82,888 miles · Sep 27, 2010
Electrical System
INSTRUMENT CLUSTER BECOMING UNRELIABLE, SPECIFICALLY THE SPEEDO AND RPM. IF THE ACTUAL SPEED IS 55 MPH I WILL GET ONE OF THREE READINGS: THE ACTUAL SPEED, A HIGHER SPEED OF ANY VALUE, A LOWER OR NEGATIVE SPEED OF ANY VALUE. HAS BEEN GOING ON FOR MORE THAN A YEAR. HAD HEARD THAT THE 2004 AVALANCHE HAD A RECALL ON THE INSTRUMEN…
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INSTRUMENT CLUSTER BECOMING UNRELIABLE, SPECIFICALLY THE SPEEDO AND RPM. IF THE ACTUAL SPEED IS 55 MPH I WILL GET ONE OF THREE READINGS: THE ACTUAL SPEED, A HIGHER SPEED OF ANY VALUE, A LOWER OR NEGATIVE SPEED OF ANY VALUE. HAS BEEN GOING ON FOR MORE THAN A YEAR. HAD HEARD THAT THE 2004 AVALANCHE HAD A RECALL ON THE INSTRUMENT CLUSTER AND WONDER IF THE TWO VEHICLES USES THE SAME PART. *TR
NHTSA ODI #10357817
51,000 miles · Sep 24, 2010
Electrical System
THE INSTRUMENT CLUSTER ON MY TRAILBLAZER HAS BEGUN TO FAIL. THE TACHOMETER, SPEEDOMETER AND TEMPERATURE GAUGE ARE NOT ALWAYS ACCURATE. MY VEHICLE IS NO LONGER UNDER WARRANTY AND THE DEALER WILL CHARGE TO REPAIR. AFTER LOOKING ONLINE A LOT OF PEOPLE HAVE HAD THE SAME ISSUE. CHEVROLET HAS ISSUED A RECALL FOR TRUCKS WITH THE SA…
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THE INSTRUMENT CLUSTER ON MY TRAILBLAZER HAS BEGUN TO FAIL. THE TACHOMETER, SPEEDOMETER AND TEMPERATURE GAUGE ARE NOT ALWAYS ACCURATE. MY VEHICLE IS NO LONGER UNDER WARRANTY AND THE DEALER WILL CHARGE TO REPAIR. AFTER LOOKING ONLINE A LOT OF PEOPLE HAVE HAD THE SAME ISSUE. CHEVROLET HAS ISSUED A RECALL FOR TRUCKS WITH THE SAME INSTRUMENT CLUSTER, BUT MY VEHICLE IS NOT COVERED FOR SOME REASON EVEN THOUGH IT USES THE SAME HARDWARE. *TR
NHTSA ODI #10357422
70,000 miles · Sep 24, 2010
Electrical System
THE VEHICLES CLUSTERS WILL MALFUNCTION SEVERAL TIMES A WEEK. FOR EXAMPLE THE RPM GAUGE WILL STOP FUNCTIONING AS WILL THE OIL PRESSURE GAUGE AND THE FUEL GAUGE WILL ALSO MALFUNCTION. SERVICE ENGINE LIGHT POPS UP ONCE A MONTH TAKEN VEHICLE TO SHOP BUT VEHICLE HAS NOTHING WRONG WITH IT. I BELIEVE IT HAS TO DO WITH VEHICLES CLUSTER…
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THE VEHICLES CLUSTERS WILL MALFUNCTION SEVERAL TIMES A WEEK. FOR EXAMPLE THE RPM GAUGE WILL STOP FUNCTIONING AS WILL THE OIL PRESSURE GAUGE AND THE FUEL GAUGE WILL ALSO MALFUNCTION. SERVICE ENGINE LIGHT POPS UP ONCE A MONTH TAKEN VEHICLE TO SHOP BUT VEHICLE HAS NOTHING WRONG WITH IT. I BELIEVE IT HAS TO DO WITH VEHICLES CLUSTER THAT IS CONSTANTLY NOT WORKING , IT GOES CRAZY ALL OF A SUDDEN. I HAVE TO REPLACE THE VEHICLES CLUSTER FOR THIS PROBLEM TO BE CORRECTED. *TR
NHTSA ODI #10357286
40,000 miles · Sep 14, 2010
Electrical System
ELECTRICAL PROBLEMS: CAR WILL DIE WITHOUT WARNING (TOOK THIS TO CHEVY AND THEY COULD NOT FIND A PROBLEM, LOW BEAMS REPEATEDLY GO OUT AFTER CHANGING FUSE, SPEEDOMETER STOPPED WORKING COMPLETELY, FUEL GAUGE STOPPED WORKING COMPLETELY, FRONT A/C WILL NOT BLOW EVER, DIFFERENT PANEL LIGHTS DO NOT WORK, PANEL BUTTONS FUNCTION INCORREC…
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ELECTRICAL PROBLEMS: CAR WILL DIE WITHOUT WARNING (TOOK THIS TO CHEVY AND THEY COULD NOT FIND A PROBLEM, LOW BEAMS REPEATEDLY GO OUT AFTER CHANGING FUSE, SPEEDOMETER STOPPED WORKING COMPLETELY, FUEL GAUGE STOPPED WORKING COMPLETELY, FRONT A/C WILL NOT BLOW EVER, DIFFERENT PANEL LIGHTS DO NOT WORK, PANEL BUTTONS FUNCTION INCORRECTLY. *TR
NHTSA ODI #10355592
55,000 miles · Sep 14, 2010
Electrical System
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING APPROXIMATELY 40 MPH WHEN ALL OF THE GAUGES AND LIGHTS ON THE INSTRUMENT PANEL FAILED. THE CONTACT REPLACED THE INSTRUMENT PANEL FUSE YET THE FAILURE PERSISTED. THE VEHICLE WAS THEN TAKEN TO A LOCAL, INDEPENDENT MECHANIC WHERE THE CONTACT WAS INFORMED T…
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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING APPROXIMATELY 40 MPH WHEN ALL OF THE GAUGES AND LIGHTS ON THE INSTRUMENT PANEL FAILED. THE CONTACT REPLACED THE INSTRUMENT PANEL FUSE YET THE FAILURE PERSISTED. THE VEHICLE WAS THEN TAKEN TO A LOCAL, INDEPENDENT MECHANIC WHERE THE CONTACT WAS INFORMED THAT THE ENTIRE INSTRUMENT PANEL WOULD NEED REPLACING. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 55,000.
NHTSA ODI #10355502
107,000 miles · Sep 13, 2010
Electrical System
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING APPROXIMATELY 45 MPH WHEN ALL OF THE INSTRUMENT PANEL GAUGES FAILED. THE VEHICLE WAS PULLED OVER AND SHUT OFF. UPON RESTART, THE GAUGES BEGAN TO FUNCTION PROPERLY. THE CONTACT STATED THAT THE FAILURE WOULD OCCUR INTERMITTENTLY. THE VEHICLE WAS NOT TA…
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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING APPROXIMATELY 45 MPH WHEN ALL OF THE INSTRUMENT PANEL GAUGES FAILED. THE VEHICLE WAS PULLED OVER AND SHUT OFF. UPON RESTART, THE GAUGES BEGAN TO FUNCTION PROPERLY. THE CONTACT STATED THAT THE FAILURE WOULD OCCUR INTERMITTENTLY. THE VEHICLE WAS NOT TAKEN TO BE EXAMINED FOR THE CAUSE OF FAILURE NOR REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 107,000.
NHTSA ODI #10355260
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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