NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
627 reportsClear category filter60,000 miles · Jan 3, 2011
Electrical System
TACHOMETER AND SPEEDOMETER ON MY 2004 CHEVY TRAILBLAZER DO NOT WORK. PROBLEM STARTED INTERMITTENTLY AT APPROXIMATELY 60,000 MILES. INITIALLY THE PROBLEM ONLY OCCURRED AFTER USING CRUISE CONTROL. HOWEVER, THE VEHICLE NOW HAS OVER 70,000 MILES AND BOTH GAUGES DO NOT WORK AT ALL. VEHICLE HASN EVER BEEN IN ANY ACCIDENT TO CAUSE …
Read full complaint
TACHOMETER AND SPEEDOMETER ON MY 2004 CHEVY TRAILBLAZER DO NOT WORK. PROBLEM STARTED INTERMITTENTLY AT APPROXIMATELY 60,000 MILES. INITIALLY THE PROBLEM ONLY OCCURRED AFTER USING CRUISE CONTROL. HOWEVER, THE VEHICLE NOW HAS OVER 70,000 MILES AND BOTH GAUGES DO NOT WORK AT ALL. VEHICLE HASN EVER BEEN IN ANY ACCIDENT TO CAUSE THIS ISSUE. SPEEDOMETER DIAL NOW READS PAST 120 MPH EVEN WHEN CAR IS STOPPED. FUEL GAUGE ALSO HAS RECENTLY STARTED TO FAIL. *TR
NHTSA ODI #10374020
101,200 miles · Jan 3, 2011
Electrical System
SPEEDOMETER HAS BECOME VERY ERRATIC. SHOWS TOO FAST AND OTHER TIMES SHOWS TO SLOW BY FROM 5 TO 30 MPH. VERY UNSAFE. CHEVROLET DEALER SAID BEEN NO PROBLEMS NEED TO COME IN AND DIAGNOSIS. THIS HAS BEEN OCCURRING THE HOLE MONTH OF DECEMBER 2010, AND NOW IN JAN. 2011. *TR
NHTSA ODI #10373989
81,000 miles · Dec 30, 2010
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 50 MPH THE OIL PRESSURE GAUGE AND THE TACHOMETER ON THE INSTRUMENT CLUSTER STOPPED WORKING PROPERLY. THE VEHICLE HAD NOT BEEN TAKEN TO THE DEALER FOR THE FAILURE. THE FAILURES WERE INTERMITTENT AT FIRST AND RECENTLY STOPPED WORKING. THE VEHICLE WAS NOT…
Read full complaint
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 50 MPH THE OIL PRESSURE GAUGE AND THE TACHOMETER ON THE INSTRUMENT CLUSTER STOPPED WORKING PROPERLY. THE VEHICLE HAD NOT BEEN TAKEN TO THE DEALER FOR THE FAILURE. THE FAILURES WERE INTERMITTENT AT FIRST AND RECENTLY STOPPED WORKING. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS UNAVAILABLE. THE FAILURE MILEAGE WAS 81,000 AND THE CURRENT MILEAGE WAS 83,000.
NHTSA ODI #10373529
92,000 miles · Dec 29, 2010
Electrical System
SPEEDOMETER STUCK/INSTRUMENT PANEL ON CHRISTMAS DAY WE WERE TRAVELING TO FAMILIES HOUSE TO CELEBRATE THE HOLIDAYS. 1.5 HOURS INTO THE TRIP, THE SPEEDOMETER WENT CRAZY AND WAS AT 90 WHEN WE WERE GOING 65. PULLED OVER AND WHEN WE STOPPED IT INCREASED TO 120 MPH. SINCE WE HAD ANOTHER 3.5 HRS OF OUR TRIP AND IT WAS UNSURE EXACTL…
Read full complaint
SPEEDOMETER STUCK/INSTRUMENT PANEL ON CHRISTMAS DAY WE WERE TRAVELING TO FAMILIES HOUSE TO CELEBRATE THE HOLIDAYS. 1.5 HOURS INTO THE TRIP, THE SPEEDOMETER WENT CRAZY AND WAS AT 90 WHEN WE WERE GOING 65. PULLED OVER AND WHEN WE STOPPED IT INCREASED TO 120 MPH. SINCE WE HAD ANOTHER 3.5 HRS OF OUR TRIP AND IT WAS UNSURE EXACTLY WHAT WAS WRONG (SINCE THERE WERE NO DEALERSHIP/SERVICE STATIONS OPEN), WE TURNED AROUND AND WENT HOME. NICE CHRISTMAS THAT WE HAD, NOT. ON MONDAY (THE NEXT DAY THE DEALERSHIP WAS OPEN) I CALLED TO GET AN APPT. AND COULDN'T' GET IN UNTIL TUESDAY. WENT IN TUESDAY AND OF COURSE CHARGED ME A DIAGNOSTIC FEE, WHEN I COULD TELL FROM SEARCHING THE INTERNET WHAT WAS WRONG (BY NOW THE SPEEDOMETER WAS STRAIGHT DOWN BETWEEN 0 AND 120). 1.5 HRS LATER THE DEALERSHIP TELLS ME IT IS THE INSTRUMENT PANEL (SURPRISE, SURPRISE) AND THAT THEY WOULD HAVE TO ORDER SINCE THEY HAVE NONE IN STOCK. IT WOULD TAKE 4-5 BUSINESS DAYS. THE EARLIEST WE'RE LOOKING AT GETTING IS NEXT WEEK, NOW 10 DAYS PAST THE DAY IT HAPPENED. I ASKED THE DEALERSHIP FOR A LOANER AND THEY OFFERED ME ENTERPRISE RENTAL FOR $40/DAY (MY EXPENSE). THEY COULD OFFER ME NOTHING ELSE, SENDING ME ON MY WAY. OK, CHEVY...SINCE THIS IS A HUGE PROBLEM, THE LEAST YOU COULD DO IS STOCK DEALERSHIPS WITH THE PANELS, ESPECIALLY SINCE THIS IS A LARGE DEALERSHIP. IT IS NOT SAFE TO BE DRIVING AROUND WITH NO WORKING SPEEDOMETER. DID I MENTION THIS IS ALSO MY VACATION WEEK....NICE, BEING STUCK AT HOME CAUSE YOU HAVE AN INOPERABLE VEHICLE. CHEVY NEEDS TO STEP UP TO THE PLATE AND MAKE THIS RIGHT WITH THEIR COSTUMERS. I HAVE BEEN A FAITHFUL OWNER SINCE 1994. A $415 PART/PLUS LABOR IS RIDICULOUS WHEN THERE HAVE BEEN SO MANY COMPLAINTS, YOU NEED TO RECALL THIS. *TR
NHTSA ODI #10373210
83,000 miles · Dec 22, 2010
Electrical System
INSTRUMENT PANEL GAUGES STOPPED WORKING. TACHOMETER, SPEEDOMETER, OIL PRESSURE AND VOLTAGE GAUGE RANDOMLY STOP WORKING. *TR
NHTSA ODI #10372080
127,000 miles · Dec 22, 2010
Electrical System
WE PURCHASED A 2005 CHEVROLET TRAILBLAZER IN 2007. BEGINNING IN 2008, OUR INSTRUMENT CLUSTER BEGAN TO FAIL, STARTING WITH THE SPEEDOMETER. AT TIMES, THE SPEEDOMETER SHOWED 15 TO 20 MPH SLOWER THAN ACTUAL SPEED, RESULTING IN UNSAFE AND UNLAWFUL SPEEDS. THE CLUSTER THEN FAILED IN THE FUEL SENSOR AND OIL PRESSURE SENSOR AREAS, AND …
Read full complaint
WE PURCHASED A 2005 CHEVROLET TRAILBLAZER IN 2007. BEGINNING IN 2008, OUR INSTRUMENT CLUSTER BEGAN TO FAIL, STARTING WITH THE SPEEDOMETER. AT TIMES, THE SPEEDOMETER SHOWED 15 TO 20 MPH SLOWER THAN ACTUAL SPEED, RESULTING IN UNSAFE AND UNLAWFUL SPEEDS. THE CLUSTER THEN FAILED IN THE FUEL SENSOR AND OIL PRESSURE SENSOR AREAS, AND HAS NOT WORKED IN OVER 2 YEARS. WHEN GM WAS CONTACTED, THEY INDICATED THEY HAD NOT RECEIVED ANY COMPLAINTS ABOUT THE ISSUE. HOWEVER, WHEN LOOKING ONLINE AT FORUMS AND OTHER RESOURCES, AND TALKING WITH GM/CHEVROLET DEALER MECHANICS, THIS PROBLEM IS WIDESPREAD AND COMMON, RESULTING IN EXPENSIVE REPAIR BILLS AND IN CASES GIVING VEHICLE OWNERS NO CHOICE BUT TO DRIVE AN UNSAFE VEHICLE DUE TO NOT HAVING THE RESOURCES TO GET THE FACTORY DEFECT REPAIRED. *TR
NHTSA ODI #10372068
89,000 miles · Dec 21, 2010
Electrical System
INSTRUMENT CLUSTER HAS QUIT WORKING. *TR
NHTSA ODI #10371985
60,000 miles · Dec 21, 2010
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 40 MPH, THE SPEEDOMETER STOPPED FUNCTIONING PROPERLY. THE CONTACT STATED THAT THE SPEEDOMETER REGISTERED 115 MPH WHEN HE WAS ONLY DRIVING 40 MPH. THE FUEL AND RPM GAUGES WERE ALSO NOT FUNCTIONING. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO STATE…
Read full complaint
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 40 MPH, THE SPEEDOMETER STOPPED FUNCTIONING PROPERLY. THE CONTACT STATED THAT THE SPEEDOMETER REGISTERED 115 MPH WHEN HE WAS ONLY DRIVING 40 MPH. THE FUEL AND RPM GAUGES WERE ALSO NOT FUNCTIONING. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO STATED THAT THE INSTRUMENT CLUSTER NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 60,000 AND THE CURRENT MILEAGE WAS APPROXIMATELY 61,000.
NHTSA ODI #10371954
104,400 miles · Dec 18, 2010
Electrical System
2004 CHEVY TRAILBLAZER HAS INSTRUMENT CLUSTER FAILURE...TACHOMETER STUCK AT "MAXIMUM", AND DEALER REPORTS ALL THE GAUGES WILL BE UNRELIABLE, SHORTLY. HAVE READ DOZENS OF THESE COMPLAINTS, BUT GM (WHO *WE* SAVED) WON'T MAKE IT RIGHT? *TR
NHTSA ODI #10371173
Mileage unknown · Dec 16, 2010
Electrical System
I OWN A 2004 CHEVY TRAILBLAZER; THE TACHOMETER, SPEEDOMOTER AND OTHER GAUGES STARTED TO FLUCTUATE AND NOW THE SPEEDOMETER NEVER WORKS PROPERLY, THE TACHOMETER COMES AND GOES AND NOW THE OIL GAUGE IS NOT SHOWING THE PROPER READING (I HAD IT CHECKED OUT TO MAKE SURE I HAD OIL AND NO OTHER ISSUES). I AM TOLD A NEW CLUSTER BOARD IS…
Read full complaint
I OWN A 2004 CHEVY TRAILBLAZER; THE TACHOMETER, SPEEDOMOTER AND OTHER GAUGES STARTED TO FLUCTUATE AND NOW THE SPEEDOMETER NEVER WORKS PROPERLY, THE TACHOMETER COMES AND GOES AND NOW THE OIL GAUGE IS NOT SHOWING THE PROPER READING (I HAD IT CHECKED OUT TO MAKE SURE I HAD OIL AND NO OTHER ISSUES). I AM TOLD A NEW CLUSTER BOARD IS NEEDED AT THE COST OF $600-$700. CHEVY IS MORE THAN AWARE OF THIS BEING A "TYPICAL/KNOWN" ISSUE AND I CANNOT UNDERSTAND WHY THERE HAS NOT BEEN A RECALL ON THIS FORCING THEM TO REPLACE THESE CLUSTER BOARDS. I HAVE PURCHASED A GPS WHICH HAS THE SPEEDOMETER OPTION SO I KNOW AT WHAT SPEED I AM TRAVELING; BUT IF THE OIL AND GAS GAUGES GO; I HAVE NO CHOICE TO FORK OVER $6-700.00. WHY IS CHEVROLET NOT BEING HELD ACCOUNTABLE FOR FAULTY EQUIPMENT THEY INSTALLED IN THEIR $37,000 VEHICLES? WHO ELSE CAN I GO TO IN ATTEMPTS TO GET SOMEONE'S ATTENTION TO GET CHEVROLET TO TAKE RESPONSIBILITY? *TR
NHTSA ODI #10370990
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.
Illustration