NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
617 reportsClear category filter98,000 miles · Mar 6, 2015
Electrical SystemEngineExterior Lighting
MULTIPLE TIMES WHILE DRIVING THE HEADLIGHTS WILL MALFUNCTION AND TURN ON AND OFF, AT RANDOM DRIVING SPEEDS UNDER MANY DIFFERENT CONDITIONS. I CONTINUED TO DRIVE THE TRAILBLAZER EVEN AFTER THIS OCCURRED. JUST NOT AS OFTEN. IF THE HEATER WAS ON WHILE DRIVING AND THE HEADLIGHTS WOULD SHORT THE HEATER WOULD STOP AND THEN TURN BACK …
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MULTIPLE TIMES WHILE DRIVING THE HEADLIGHTS WILL MALFUNCTION AND TURN ON AND OFF, AT RANDOM DRIVING SPEEDS UNDER MANY DIFFERENT CONDITIONS. I CONTINUED TO DRIVE THE TRAILBLAZER EVEN AFTER THIS OCCURRED. JUST NOT AS OFTEN. IF THE HEATER WAS ON WHILE DRIVING AND THE HEADLIGHTS WOULD SHORT THE HEATER WOULD STOP AND THEN TURN BACK ON. THE FAN TURNS ON AT RANDOM, FIRST IT TURNS ON WHEN DRIVING AT RANDOM TIMES. THE FAN WILL TURN ON AT RANDOM TIMES WITH A HIGHER SPEED AND SOUND. I HAVE HAD THE INSPECTION COMPLETED MULTIPLE TIMES WITH A MECHANIC RE-ASSURING THE ISSUE ALTHOUGH IT HAS BEEN HAPPENING FREQUENTLY. THE CHECK ENGINE LIGHT IS ON ALL THE TIME DUE TO COMPUTER ERROR AND IS A $500.00 FIX. THIS HAS ALL HAPPENED AND BEEN REPORTED WITHIN THE FIRST YEAR I BOUGHT THE VEHICLE FROM KENDAL MOTORS IN LEWISTON IDAHO. I FIND THAT THE AMOUNT OF WORK TO FIX THIS VEHICLE IS OVERWHELMING AND TO SEE THAT THIS VEHICLE WAS UNDER 100.000 MILES IS FINANCIALLY DISTRESSING. I HAVE ALREADY HAD THE FUEL PUMP PORTION REMOVED AND FIXED TWICE, I HAD TO PURCHASE A LOCKING CAP. THE STEREO REPEATEDLY JAMS WITH NEW CD'S EVEN. *TR
NHTSA ODI #10692428
134,929 miles · Feb 28, 2015
Electrical System
OUR SPEEDOMETER DOES NOT WORK ANY LONGER AND AS I READ, THIS IS A COMMON PROBLEM BUT THERE IS SO RECALL ON THE VEHICLE. *TR
NHTSA ODI #10691260
76,000 miles · Feb 5, 2015
Electrical SystemFuel/propulsion System
THE FUEL GAUGE STOPPED WORKING IN MY VEHICLE AND BY THE TIME THE RECALL OCCURRED IN 2013, MY VEHICLE HAS MORE THAN THE LIMITED MILEAGE OF 120,000 OR LESS TO PAY FOR HALF THE REPAIR COST. THE SPEEDOMETER FAILED TO WORK AT ALL BACK IN 2009 AS WELL. *TR
NHTSA ODI #10681580
115,000 miles · Feb 4, 2015
Electrical System
TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. WHILE DRIVING AT VARIOUS SPEEDS, THE HEADLIGHTS WOULD INTERMITTENTLY OPERATE. THE VEHICLE WAS TAKEN TO THE DEALER WHO DIAGNOSED THAT THE FUSE BOX NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS …
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TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. WHILE DRIVING AT VARIOUS SPEEDS, THE HEADLIGHTS WOULD INTERMITTENTLY OPERATE. THE VEHICLE WAS TAKEN TO THE DEALER WHO DIAGNOSED THAT THE FUSE BOX NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 115,000. UPDATED 4/15/15*CN UPDATED 9/20/2017*CN
NHTSA ODI #10681208
107,000 miles · Jan 16, 2015
Electrical System
WHEN I FILL UP WITH GAS MY GAS GAUGE READS 0. AFTER DRIVING 40 - 80 MI. IT SLOWLY COMES BACK, BUT READS INCORRECTLY FOR A FEW MILES. BY THE TIME ITS NEARING 1/4 TO 1/2 TANK IS SEEMS OK. I REALLY THINK ITS ONLY A MATTER OF TIME BEFORE IT QUITS ALTOGETHER. I DON'T TRUST AND USE MY ODOMETER TO ESTIMATE MY GAS LEVEL. *TR
NHTSA ODI #10673030
Mileage unknown · Jan 12, 2015
Electrical System
FIRST MY TEMP GAUGE STARTED READING INCORRECTLY. THE NEEDLE WOULD POINT WAY OUTSIDE THE NORMAL RANGE OF THE GAUGE, OFTEN STRAIGHT DOWNWARD. THEN MY SPEEDOMETER STOPPED WORKING. AT A FULL STOP IT SAYS I'M GOING BETWEEN 50 AND 65 MPH. I'VE READ ONLINE THAT THIS IS APPARENTLY A BIG PROBLEM FOR THIS MODEL AND YEAR (SEVERAL REPAIRS P…
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FIRST MY TEMP GAUGE STARTED READING INCORRECTLY. THE NEEDLE WOULD POINT WAY OUTSIDE THE NORMAL RANGE OF THE GAUGE, OFTEN STRAIGHT DOWNWARD. THEN MY SPEEDOMETER STOPPED WORKING. AT A FULL STOP IT SAYS I'M GOING BETWEEN 50 AND 65 MPH. I'VE READ ONLINE THAT THIS IS APPARENTLY A BIG PROBLEM FOR THIS MODEL AND YEAR (SEVERAL REPAIRS PER WEEK) AND YET THERE'S NO RECALL? *TR
NHTSA ODI #10671904
115,000 miles · Jan 7, 2015
Electrical SystemVehicle Speed Control
SPEEDOMETER STOPPED WORKING A FEW TIMES UNTIL IT COMPLETELY HAS GONE DEAD AND DOESN'T WORK AT ALL. MY TRAILBLAZER ALSO HAS STALLED IF STOPPED AT A RED LIGHT MORE THAN ONCE. *TR
NHTSA ODI #10670625
87,000 miles · Dec 8, 2014
Electrical SystemExterior LightingPower Train
WHILE PUTTING THE TRUCK INTO 4X4 HI, LO, OR ALL WHEEL DRIVE, THE TRANSFER CASE NEVER DOES FULLY PUT IT INTO 4X4. WHILE DRIVING, THE DIM LIGHTS TURN COMPLETELY OFF. THE BRIGHTS WORK, BUT THE DIMS DO NOT. THESE WILL NOT TURN BACK ON UNTIL THE TRUCK IS SHUT OFF OR A PROPER BUMP IS HIT. THE HEATER BLOWER IN THE FRONT SOMETIMES WILL …
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WHILE PUTTING THE TRUCK INTO 4X4 HI, LO, OR ALL WHEEL DRIVE, THE TRANSFER CASE NEVER DOES FULLY PUT IT INTO 4X4. WHILE DRIVING, THE DIM LIGHTS TURN COMPLETELY OFF. THE BRIGHTS WORK, BUT THE DIMS DO NOT. THESE WILL NOT TURN BACK ON UNTIL THE TRUCK IS SHUT OFF OR A PROPER BUMP IS HIT. THE HEATER BLOWER IN THE FRONT SOMETIMES WILL NIT COME ON. THE BACK WILL BE BLOWING, NOT THE FRONT. ALSO IF A BUMP IS HIT IMPROPERLY, THE BACK SPEAKERS WILL START BUZZING. *TR
NHTSA ODI #10662911
10,000 miles · Dec 3, 2014
Electrical SystemExterior Lighting
MULTIPLE TIMES MY TRAILBLAZER HAS STALLED WITHOUT WARNING. IT TENDS TO HAPPEN WHEN I AM IN A STOPPED POSITION. WHETHER IT IS AT A STOP LIGHT OR JUST STOPPING IN GENERAL. IT TAKES A MINUTE AND THEN RESTARTS. *JS IT HAS ALSO MULTIPLE TIMES LOST HEAD LIGHTS. THE LAST TIME WAS AT 9PM WHILE DRIVING HOME WITH MY CHILDREN I…
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MULTIPLE TIMES MY TRAILBLAZER HAS STALLED WITHOUT WARNING. IT TENDS TO HAPPEN WHEN I AM IN A STOPPED POSITION. WHETHER IT IS AT A STOP LIGHT OR JUST STOPPING IN GENERAL. IT TAKES A MINUTE AND THEN RESTARTS. *JS IT HAS ALSO MULTIPLE TIMES LOST HEAD LIGHTS. THE LAST TIME WAS AT 9PM WHILE DRIVING HOME WITH MY CHILDREN IN THE CAR. MY HEADLIGHTS WENT OUT I HAD TO PULL OVER AND THE ONLY WAY MY LIGHTS WOULD WORK WAS IF I HELD MY HIGH BEAMS ON.
NHTSA ODI #10661927
110,000 miles · Nov 30, 2014
Electrical System
THE SPEEDOMETER NO LONGER WORKS. AS THE WEATHER GETS COLDER, THE NEEDLE WILL GET STUCK IN THE 90-100 RANGE AND NOT RESET WHEN THE CAR IS TURNED OFF.I AM THE ORIGINAL OWNER OF THE CAR AND THIS STARTED HAPPENING ABOUT A COUPLE OF YEARS AGO AS THE WINTER APPROACHES. IN THE SUMMER THE SPEEDOMETER SEEMS TO WORK FINE. YEARS AGO THE NE…
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THE SPEEDOMETER NO LONGER WORKS. AS THE WEATHER GETS COLDER, THE NEEDLE WILL GET STUCK IN THE 90-100 RANGE AND NOT RESET WHEN THE CAR IS TURNED OFF.I AM THE ORIGINAL OWNER OF THE CAR AND THIS STARTED HAPPENING ABOUT A COUPLE OF YEARS AGO AS THE WINTER APPROACHES. IN THE SUMMER THE SPEEDOMETER SEEMS TO WORK FINE. YEARS AGO THE NEEDLE ON THE OIL GAUGE STOPPED WORKING. IT WAS GOING TO COST OVER $700.00 TO REPLACE THE INSTRUMENT PANEL SO DECIDED AGAINST THAT SINCE I CHANGE THE OIL REGULARLY. THE SPEEDOMETER IS A NECESSITY AND THE OCCURRING DEFECT SEEMS LIKE A VERY COMMON PROBLEM ON THIS MODEL. WHY ISN'T THIS BEING ADDRESSED? *TR
NHTSA ODI #10661340
NHTSA investigations
2RQ17002 · 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.
DP10001 · Fuel Level Gauge System Failure
Opened Jan 7, 2010 · Closed May 23, 2011
Status: closed (inferred from source dates) · Fuel System, Other; Fuel System, Other:storage:fuel Gauge System
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.
Additional source detail variants (2)
Fuel System, Other
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.
Fuel System, Other:storage:fuel Gauge System
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.
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