NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
627 reportsClear category filter20,000 miles · Dec 14, 2010
Electrical System
I BOUGHT A 2004 TRAILBLAZER WITH A FACTORY INSTALLED TOW PACKAGE, INCLUDING ELECTRIC HOOKUP. WHEN I HOOKED IT TO A TRAVEL TRAILER, THE TBLAZER SENT TO CHARGE TO THE TRAILER FOR BATTERY CHARGE, INTERIOR LIGHTS, ETC. THE DEALER, GOLD MOTORS IN NEWPORT, OREGON, SAID THERE WAS NO PROBLEM. HOWEVER, IT STILL REFUSED TO WORK. I TOOK TH…
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I BOUGHT A 2004 TRAILBLAZER WITH A FACTORY INSTALLED TOW PACKAGE, INCLUDING ELECTRIC HOOKUP. WHEN I HOOKED IT TO A TRAVEL TRAILER, THE TBLAZER SENT TO CHARGE TO THE TRAILER FOR BATTERY CHARGE, INTERIOR LIGHTS, ETC. THE DEALER, GOLD MOTORS IN NEWPORT, OREGON, SAID THERE WAS NO PROBLEM. HOWEVER, IT STILL REFUSED TO WORK. I TOOK THE CAR TO A LOCAL MECHANIC. HE DISCOVERED SEVERAL WIRES IN THE BOX HOUSING THE WIRING MANIFOLD AT THE FRONT DRIVER SIDE OF THE ENGINE WERE CROSS-WIRED. HE STRAIGHTENED IT OUT AT THE COST OF TWO HOURS LABOR. IF THIS IS THE STANDARD QUALITY OF GM QUALITY, THEY SHOULD BE ALLOWED TO GO BANKRUPT. *TR
NHTSA ODI #10370687
60,000 miles · Dec 14, 2010
Electrical System
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING AT AN UNKNOWN SPEED WHEN THE FUEL GAUGE BEGAN TO FLUCTUATE BACK AND FORTH BETWEEN DIFFERENT READINGS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE CONTACT WAS ADVISED THAT THE INSTRUMENT CLUSTER WAS FAILING. THE VEHICLE WAS NOT REPAIRED. THE…
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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING AT AN UNKNOWN SPEED WHEN THE FUEL GAUGE BEGAN TO FLUCTUATE BACK AND FORTH BETWEEN DIFFERENT READINGS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE CONTACT WAS ADVISED THAT THE INSTRUMENT CLUSTER WAS FAILING. THE VEHICLE WAS NOT REPAIRED. THE VOLTAGE GAUGE AND RPM GAUGE HAD SINCE STOPPED FUNCTIONING AND THE SPEEDOMETER WOULD FAIL INTERMITTENTLY. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE WAS 100,000.
NHTSA ODI #10370589
62,000 miles · Dec 7, 2010
Electrical System
FUEL, ENGINE TEMPERATURE, TACHOMETER NOT DISPLAYING CORRECT DATA. FUEL AND TEMP GAUGE DISPLAYS SHOW NEEDLE PINNED (BELOW LOWER HALF OF GAUGE) AND TACH SOMETIMES DOES NOT WORK OR SHOWS ZERO AT IDLE. THIS SEEMS TO BE A COMMON PROBLEM AND OCCURANCE WITH THIS MAKE AND MODEL. OBVIOUSLY, THE MOST IMPORTANT IS THE GAS GAUGE... NOT KNOW…
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FUEL, ENGINE TEMPERATURE, TACHOMETER NOT DISPLAYING CORRECT DATA. FUEL AND TEMP GAUGE DISPLAYS SHOW NEEDLE PINNED (BELOW LOWER HALF OF GAUGE) AND TACH SOMETIMES DOES NOT WORK OR SHOWS ZERO AT IDLE. THIS SEEMS TO BE A COMMON PROBLEM AND OCCURANCE WITH THIS MAKE AND MODEL. OBVIOUSLY, THE MOST IMPORTANT IS THE GAS GAUGE... NOT KNOWING EXACTLY HOW MUCH FUEL IS IN THE TANK IS HAZARDOUS AND ANNOYING. I HAVE TO "GUESS" WHEN TO FUEL UP, ESPECIALLY ON LONGER TRIPS.
NHTSA ODI #10370131
59,900 miles · Dec 6, 2010
Electrical System
2004 CHEVY TRAILBLAZER LT SPEEDOMETER STOPPED WORKING AND RPM GAUGE IS ACTING WEIRD. *TR
NHTSA ODI #10369387
98,000 miles · Nov 28, 2010
Electrical System
IT STARTED WITH THE SPEEDO GOING CRAZY , YOU WILL BE GOING 45-50 AND THE SPEEDO SAYS YOU ARE GOING 120. AT A STOP SIGN IT WILL SAY YOU ARE GOING 40. HAD IT CHECKED DEALER SAYS IT'S YOUR COMPUTER IT HAPPENS ALL THE TIME. WINNER CHEVROLET, COLFAX CA. NEXT TEMP GAUGE GOES TO 260 DEGREES. WE PULL OVER HAVE IT TOWED IN MECH. SAYS IT…
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IT STARTED WITH THE SPEEDO GOING CRAZY , YOU WILL BE GOING 45-50 AND THE SPEEDO SAYS YOU ARE GOING 120. AT A STOP SIGN IT WILL SAY YOU ARE GOING 40. HAD IT CHECKED DEALER SAYS IT'S YOUR COMPUTER IT HAPPENS ALL THE TIME. WINNER CHEVROLET, COLFAX CA. NEXT TEMP GAUGE GOES TO 260 DEGREES. WE PULL OVER HAVE IT TOWED IN MECH. SAYS ITS FINE ITS A COMPUTER PROBLEM. NOW THE GAS GAUGE AND VOLTS GAS EMPTY AND WAY OVER CHARGING. MECH. SAYS IT A COMPUTER. *TR
NHTSA ODI #10368043
66,547 miles · Nov 27, 2010
Electrical SystemVehicle Speed Control
SPEEDOMETER SHOW 40 DOING 60 OR SO CAN NOT REALLY TELL HOW FAST I AM GOING TACHOMETER NOT WORKING RIGHT READING ON THE INTERNET THIS IS A SEVERE PROBLEM GM RECALL TRUCKS AND SOME OTHER MODELS WHY NOT THE TRAILBLAZERS
NHTSA ODI #10368815
65,000 miles · Nov 23, 2010
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE SPEEDOMETER MALFUNCTIONED WHILE DRIVING CAUSING THE CONTACT TO BE UNWARE OF HOW FAST SHE WAS DRIVING. THE FAILURE OCCURRED INTERMITTENTLY. THE VEHICLE WAS NOT BEEN INSPECTED OR REPAIRED BY A DEALER. THE FAILURE MILEAGE WAS APPROXIMATELY 65,000. THE V…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE SPEEDOMETER MALFUNCTIONED WHILE DRIVING CAUSING THE CONTACT TO BE UNWARE OF HOW FAST SHE WAS DRIVING. THE FAILURE OCCURRED INTERMITTENTLY. THE VEHICLE WAS NOT BEEN INSPECTED OR REPAIRED BY A DEALER. THE FAILURE MILEAGE WAS APPROXIMATELY 65,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10367316
100,000 miles · Nov 22, 2010
Electrical System
2004 CHEVY TRAILBLAZER ALL GAUGES HAVE FAILED. ONE BY ONE, SPEEDOMETER, GAS, OIL, TEMP, TACK. I FEEL THIS IS A SAFETY ISSUE THAT GM SHOULD ADDRESS. *TR
NHTSA ODI #10367068
68,720 miles · Nov 20, 2010
Electrical System
2004 CHEVROLET TRAILBLAZER INSTRUMENT CLUSTER NOT WORKING. FIRST THE TACHOMETER STOPPED, THEN SPEEDOMETER AND NOW OTHER GAUGES QUIT. I HAVE FOUND MANY PEOPLE HAVE HAD THE SAME PROBLEM AND GM IS DOING NOTHING ABOUT THE PROBLEM. IF ALL CARS FROM THIS SERIES END UP HAVING TO HAVE THEIR INSTRUMENT CLUSTER REPLACED THERE IS A BIGGER …
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2004 CHEVROLET TRAILBLAZER INSTRUMENT CLUSTER NOT WORKING. FIRST THE TACHOMETER STOPPED, THEN SPEEDOMETER AND NOW OTHER GAUGES QUIT. I HAVE FOUND MANY PEOPLE HAVE HAD THE SAME PROBLEM AND GM IS DOING NOTHING ABOUT THE PROBLEM. IF ALL CARS FROM THIS SERIES END UP HAVING TO HAVE THEIR INSTRUMENT CLUSTER REPLACED THERE IS A BIGGER PROBLEM WITH SOME FACTORY DEFECT AND IT SHOULD BE TAKEN CARE OF BY THE MANUFACTURER SINCE THE PRODUCT THEY SOLD IN THE MARKET HAS KNOWN DEFECTS. I HAVE READ HOW THIS PROBLEM HAS BEEN KNOWN AND REPORTS HAVE BEEN FILED WITH NHTSA FOR QUITE SOME TIME NOW AND NOTHING IS BEING DONE ABOUT IT. I THINK SOMEONE SHOULD FORCE THE HAND OF GM TO CORRECT THIS PROBLEM. *TR
NHTSA ODI #10366960
48,900 miles · Nov 16, 2010
Electrical System
THIS IS NOT AN ACCIDENT COMPLAIN. MY SPEEDOMETER IS STUCK ALL THE WAY TO THE RIGHT. THIS HAS HAPPENED FOR A COUPLE OF WEEKS NOW. IT DOES NOT MOVE WHEN I DRIVE OR PARK THE CAR. THE MILES ARE BEING RECORDED, BUT I DON'T KNOW IF THEY ARE ACCURATE. LOTS OF PEOPLE HAVE THIS PROBLEM. SEEMS TO ME THAT A RECALL SHOULD BE DONE. *TR
NHTSA ODI #10366427
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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