NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
145 reportsClear category filterMileage unknown · Mar 28, 2010
Electrical System
THERE HAVE NOT BEEN ANY ACCIDENTS OR INJURIES YET, THAT I KNOW OF. THERE HAVE, HOWEVER, BEEN MANY COMPLAINTS THAT I HAVE SEEN FOR THE SAME PROBLEM I AM HAVING AND CHEVY DOES NOT CARE. THE SPEEDOMETER AND OTHER GAUGES ON MY 2004 TRAILBLAZER DO NOT WORK CORRECTLY, THE SPEEDOMETER CAN READ 0-120 WHEN AT A COMPLETE STOP. THEREFORE W…
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THERE HAVE NOT BEEN ANY ACCIDENTS OR INJURIES YET, THAT I KNOW OF. THERE HAVE, HOWEVER, BEEN MANY COMPLAINTS THAT I HAVE SEEN FOR THE SAME PROBLEM I AM HAVING AND CHEVY DOES NOT CARE. THE SPEEDOMETER AND OTHER GAUGES ON MY 2004 TRAILBLAZER DO NOT WORK CORRECTLY, THE SPEEDOMETER CAN READ 0-120 WHEN AT A COMPLETE STOP. THEREFORE WE NEVER KNOW HOW FAST WE ARE GOING AND WITH CHILDREN IN THE VEHICLE THIS IS VERY DISTURBING. BESIDES THE GAUGES THE WIRES FOR THE HEADLIGHTS KEEP BURNING. I WAS TOLD WHEN I HAD THE FIRST ONE FIXED THAT IT IS VERY COMMON IN THESE VEHICLES. THE FACT THAT BOTH OF THESE PROBLEMS ARE SO COMMON WITH MANY CHEVY VEHICLES AND THEY ARE RECALLING SOME AND NOT ALL, I GUESS I JUST WANT TO KNOW WHY NOT ALL? *CN
NHTSA ODI #10322517
600,000 miles · Mar 23, 2010
Electrical System
THE SPEEDOMETER AND BATTERY GUAGE WILL NOT WORK. THE SPEEDOMETER SHOWS OVER 100 MPH WHEN YOU ARE NOT MOVING. CALLED THE DEALERSHIP AND THEY SAID THEY GET CALLS EVERYDAY ON THIS PROBLEM, BUT GM DOES NOT HAVE A RECALL ON THE TRAILBLAZER ONLY ON THE PICKUP TRUCKS.
NHTSA ODI #10321589
Mileage unknown · Mar 15, 2010
Electrical System
I ALSO JUST HAD TO REPLACE THE CLUSTER FOR MY INSTRUMENT PANEL IN MY 2004 CHEVROLET TRAILBLAZER. I FIND IT VERY INTERESTING, THE NUMBER OF CARS THAT ARE HAVING THE SAME FAILURE AS I HAVE HAD AT APPROXIMATELY THE SAME TIME. *TR
NHTSA ODI #10319690
95,000 miles · Mar 12, 2010
Electrical System
AS I HAVE SEEN FROM OTHER OWNERS OF THE SAME GM PRODUCT, WHILE DRIVING DOWN THE ROAD MY SPEEDOMETER DOESN'T WORK RIGHT. IS ALWAYS REGISTERING AT A VERY HIGH SPEED, SOMETIMES EVEN PEGGING DOWN WHERE YOUR GEARS ARE LOCATED. COSTS TO REPAIR IS $600-$700 AND 5-7 DAYS OF DOWN TIME AS THE PART MUST BE SENT AWAY AND REPAIRED. LIKE OTH…
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AS I HAVE SEEN FROM OTHER OWNERS OF THE SAME GM PRODUCT, WHILE DRIVING DOWN THE ROAD MY SPEEDOMETER DOESN'T WORK RIGHT. IS ALWAYS REGISTERING AT A VERY HIGH SPEED, SOMETIMES EVEN PEGGING DOWN WHERE YOUR GEARS ARE LOCATED. COSTS TO REPAIR IS $600-$700 AND 5-7 DAYS OF DOWN TIME AS THE PART MUST BE SENT AWAY AND REPAIRED. LIKE OTHER CONSUMERS I CAN NOT AFFORD THIS COSTLY REPAIR. I WOULD THINK AFTER THE NUMEROUS COMPLAINTS GM WOULD REPAIR. PERSONALLY, I'M CONSIDERING FOREIGN NEXT TIME. AT LEAST THEY OWN UP TO THEIR MISTAKES AND REPAIR AT NO COST TO THE CONSUMER. *TR
NHTSA ODI #10319128
82,000 miles · Feb 27, 2010
Electrical System
INSTRUMENT PANEL GAUGES FLUCTUATE, SHOWING INACCURATE READINGS. SPEEDOMETER STICKS ON ONE SPEED AND ALSO JUST FAILS CONSISTENTLY. *TR
NHTSA ODI #10314840
Mileage unknown · Feb 23, 2010
Electrical System
ON 02/05 /2010 I WAS GOING SOUTH ON 165 TO MONROE, LA IT WAS ABOUT 8:00 AT NIGHT,WHEN THE DASHBOARD LIGHTS THEN THE HEADLIGHTS JUST WENT OUT. THIS MADE ME GO INTO A PANIC. I DID NOT KNOW WHAT TO DO BECAUSE IT WAS VERY DARK. I DID MANAGE TO PULL OVER. THANKFULLY THERE WAS A GAS STATION NEAR BY. ON 2/06/2010 I TOOK TO A CHE…
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ON 02/05 /2010 I WAS GOING SOUTH ON 165 TO MONROE, LA IT WAS ABOUT 8:00 AT NIGHT,WHEN THE DASHBOARD LIGHTS THEN THE HEADLIGHTS JUST WENT OUT. THIS MADE ME GO INTO A PANIC. I DID NOT KNOW WHAT TO DO BECAUSE IT WAS VERY DARK. I DID MANAGE TO PULL OVER. THANKFULLY THERE WAS A GAS STATION NEAR BY. ON 2/06/2010 I TOOK TO A CHEVY DEALER AND THEY TOLD ME THAT THEY HAVE BE SEEING THIS PROBLEM FOR SOME TIME. BUT THEY CLOSE EARLY ON SATURDAY SO THEY COULD NOT FITS IT IN ONE DAY. SO I TOOK TO ANOTHER REPAIR SHOP AND THEY TOLD ME THEY HAVE SEEN THIS SAME PROBLEM 4 TIMES IN JAN. SO CHEVROLET HAS A PROBLEM THAT NEEDS LOOKING INTO. *TR
NHTSA ODI #10313439
65,750 miles · Feb 16, 2010
Electrical System
I OWN A 2004 CHEVY TRAILBLAZER THAT I PURCHASED NEW IN 2004. IN 2007, THE INSTRUMENT CLUSTER BEGAN TO MALFUNCTION EXHIBITING ERRATIC FUNCTION. I TOOK IT TO MY LOCAL DEALER WHERE I PURCHASED THE VEHICLE AND IT WAS REPLACED UNDER THE WARRANTY. NOW, HERE IT IS, 2/2010 AND THE CLUSTER IS DOING THE VERY SAME THING THE ORIGINAL DEF…
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I OWN A 2004 CHEVY TRAILBLAZER THAT I PURCHASED NEW IN 2004. IN 2007, THE INSTRUMENT CLUSTER BEGAN TO MALFUNCTION EXHIBITING ERRATIC FUNCTION. I TOOK IT TO MY LOCAL DEALER WHERE I PURCHASED THE VEHICLE AND IT WAS REPLACED UNDER THE WARRANTY. NOW, HERE IT IS, 2/2010 AND THE CLUSTER IS DOING THE VERY SAME THING THE ORIGINAL DEFECTIVE CLUSTER WAS DOING. I HAVE GONE ONLINE AND READ WHERE MANY, MANY OWNERS OF CHEVY PRODUCTS FROM 2003 ON ARE HAVING THESE COMPARABLE ISSUES AND THAT CHEVY HAS SOME SORT OF EXTENDED WARRANTY THEY ARE OFFERING FOR MANY GM PRODUCTS WITH THESE DEFECTIVE CLUSTERS. I AM DISGUSTED BY THE FACT THAT, FROM WHAT I HAVE READ ONLINE, TRAILBLAZER OWNERS HAVE BEEN EXCLUDED FROM THIS EXTENDED WARRANTY DUE TO AN INADEQUATE NUMBER OF COMPLAINTS NECESSARY TO WARRANT COVERAGE. IT IS A KNOWN FACT THAT THE TRAILBLAZER HAS THE IDENTICAL INSTRUMENT CLUSTER AS THE OTHER GM PRODUCTS COVERED IN THEIR EXTENDED WARRANTY. AT THIS POINT, I AM ADDING MYSELF TO WHAT I'M SURE IS A GROWING NUMBER OF UNHAPPY GM OWNERS COMING TO YOU IN HOPES THAT GM WILL BE MADE HELD RESPONSIBLE TO REPLACE A THEIR DEFECTIVE PRODUCT. *TR
NHTSA ODI #10311143
64,000 miles · Feb 9, 2010
Electrical System
THE SPEEDOMETER, OIL PRESSURE GAUGE, AND TACHOMETER HAVE STOPPED WORKING ON MY 04 TRAILBLAZER. ONLY HAVE 64,000 MILES ON IT. HAVE TALKED TO MECHANICS ABOUT REPLACING. TOLD IT WOULD COST BETWEEN $400 AND $800 TO REPLACE BUT MAY NOT FIX THE PROBLEM IN THE LONG TERM--MANY TIMES REPLACED CLUSTERS HAVE THE SAME PROBLEM. LOOK AT THE I…
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THE SPEEDOMETER, OIL PRESSURE GAUGE, AND TACHOMETER HAVE STOPPED WORKING ON MY 04 TRAILBLAZER. ONLY HAVE 64,000 MILES ON IT. HAVE TALKED TO MECHANICS ABOUT REPLACING. TOLD IT WOULD COST BETWEEN $400 AND $800 TO REPLACE BUT MAY NOT FIX THE PROBLEM IN THE LONG TERM--MANY TIMES REPLACED CLUSTERS HAVE THE SAME PROBLEM. LOOK AT THE INTERNET AND YOU WILL SEE THAT MANY PEOPLE ARE HAVING THE SAME PROBLEM. *TR
NHTSA ODI #10308181
65,655 miles · Feb 4, 2010
Electrical System
I WAS DRVING DOWN THE ROAD AND THE SPEEDOMETER STOPPED WORKING WHILE THE TRUCK WAS IN MOTION. IT WENT FROM 60 MPH TO THE NEEDLE GOING ALL THE WAY PAST 120 AND POINTING DOWN AT THE ODOMETER. MY SPEED DID NOT CHANGE DURING ALL THIS. *TR
NHTSA ODI #10305180
Mileage unknown · Feb 1, 2010
Electrical System
EACH TIME I START MY 2004 CHEVY TRAILBLAZER EXT THE "CHANGE ENGINE OIL" LIGHT COMES ON. AFTER 15 SECONDS IT TURNS OFF. ON SEVERAL OCCASIONS, MY RPM WILL EITHER GO EXTREMELY HIGH, TRAVELING 30 AND THE RPM SAYS I'M DOING 90, OR WILL GO EXTREMELY LOW, GOING 30-SAYS I'M GOING 0. ALSO, MY GAS GAUGE STARTED ME OUT WITH JUST UNDER A…
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EACH TIME I START MY 2004 CHEVY TRAILBLAZER EXT THE "CHANGE ENGINE OIL" LIGHT COMES ON. AFTER 15 SECONDS IT TURNS OFF. ON SEVERAL OCCASIONS, MY RPM WILL EITHER GO EXTREMELY HIGH, TRAVELING 30 AND THE RPM SAYS I'M DOING 90, OR WILL GO EXTREMELY LOW, GOING 30-SAYS I'M GOING 0. ALSO, MY GAS GAUGE STARTED ME OUT WITH JUST UNDER A HALF A TANK OF GAS, AND WHEN I GOT TO WORK 15 MILES AWAY, I AM UNDER A QUARTER A TANK OF GAS. FINALLY, MY 4WD AND ALL-WHEEL-DRIVE FLASHES INTERMITTENTLY WHILE I AM DRIVING. I DO NOT NEED TO SWITCH IT MYSELF, IT JUST SOMETIMES SWITCHES TO 4HI, AND FLASHES BETWEEN. THIS MORNING I NOTICED THE LIGHT WASN'T ON, PERIOD. THE ELECTRICAL SYSTEM IS ENTIRELY MESSED UP. *TR
NHTSA ODI #10303683
NHTSA investigations
3RQ17002 · 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.
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