NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,466 reports97,650 miles · Nov 23, 2011
Power Train
AT APPROXIMATELY 11:00 AM JUST AFTER PARKING THE VEHICLE IN AN INCLINED HOME DRIVEWAY AND AFTER TURNING THE ENGINE OFF FOR 2-3 MINUTES AND WITH THE AUTOMATIC TRANSMISSION IN THE PARK POSITION, THE VEHICLE ON ITS OWN STARTED TO ROLL DOWN THE CONCRETE DRIVEWAY AND INTO THE RESIDENTIAL STREET. NO ONE WAS INJURED OR RUN OVER, THOUG…
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AT APPROXIMATELY 11:00 AM JUST AFTER PARKING THE VEHICLE IN AN INCLINED HOME DRIVEWAY AND AFTER TURNING THE ENGINE OFF FOR 2-3 MINUTES AND WITH THE AUTOMATIC TRANSMISSION IN THE PARK POSITION, THE VEHICLE ON ITS OWN STARTED TO ROLL DOWN THE CONCRETE DRIVEWAY AND INTO THE RESIDENTIAL STREET. NO ONE WAS INJURED OR RUN OVER, THOUGH THE POTENTIAL WAS GREAT SINCE MY WIFE AND I WERE BOTH UNLOADING THE CAR FROM THE REAR SIDE DOORS AND THE TAILGATE, BUT WE WERE NEITHER IN THE DOORWAYS OR BEHIND THE VEHICLE. APPARENTLY THE PARK TRANSMISSION LOCK FAILED OR BECAME DISENGAGED - A SERIOUS DEFECT. THE VEHICLE CAME TO A STOP IN THE MIDDLE OF THE STREET. I RESTARTED THE CAR AND HAVE DRIVEN IT OVER 100 MILES WITHOUT INCIDENT SINCE YESTERDAY. I HAVE USED THE PARK POSITION WITHOUT INCIDENT SINCE THAT TIME, THOUGH I HAVE NOT PARKED THE VEHICLE ON AN INCLINED SURFACE.
NHTSA ODI #10437188
Mileage unknown · Nov 22, 2011
Electrical SystemExterior LightingFuel System, Gasoline
THE TRAILBLAZER I BOUGHT SEEM TO BE MORE OF A HEADACHE THE A SPORT VEHICLE. I WISH I HAD LOOK BETTER AT ALL THE INFORMATION THE WAS OUT THERE. I WILL NOT PURCHASE ANOTHER ONE, OR RECOMMEND THIS VEHICLE TO ANYONE. SORRY I BOUGHT IT. *TR
NHTSA ODI #10436699
50,000 miles · Nov 16, 2011
Electrical System
MY SPEEDOMETER ALL OF A SUDDEN JUMPED TO OVER 70MPH WHEN I WAS ONLY GOING ABOUT 30MPH. SINCE JUNE OF THIS YEAR IT HAS HAPPENED NUMBEROUS TIMES. NOW IT JUST SITS AT THE BOTTOM OF THE SPEEDOMETER WHEN IT IS TURNED OFF. *TR
NHTSA ODI #10436034
105,000 miles · Nov 14, 2011
Fuel System, Gasoline
TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE FUEL GAUGE MALFUNCTIONED DUE TO A FAULTY FUEL SENSOR AND THE CONTACT WAS NOT ABLE TO READ THE CORRECT FUEL LEVELS IN THE VEHICLE. THE MANUFACTURER WAS CONTACTED AND OFFERED TO COVER FIFTY PERCENT OF THE REPAIR COSTS. THE FAILURE MILEAGE WAS 105,000. …
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TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE FUEL GAUGE MALFUNCTIONED DUE TO A FAULTY FUEL SENSOR AND THE CONTACT WAS NOT ABLE TO READ THE CORRECT FUEL LEVELS IN THE VEHICLE. THE MANUFACTURER WAS CONTACTED AND OFFERED TO COVER FIFTY PERCENT OF THE REPAIR COSTS. THE FAILURE MILEAGE WAS 105,000.
NHTSA ODI #10435521
100,000 miles · Nov 14, 2011
Fuel System, Gasoline
I WAS DRIVING ON THE HIGHWAY AT 70MPH WHEN MY ENGINE SUDDENLY CUT. I LOST POWER STEERING AND BRAKES. LUCKILY, TRAFFIC WAS CLEAR ENOUGH AND AN EXIT RAMP WAS ACCESSIBLE; HOWEVER, I HAD A VERY DIFFICULT TIME STEERING TO THE SIDE AND THOUGHT I WAS GOING TO BE UNABLE TO BRAKE. I WAS STRANDED ON THE OFF RAMP FOR HOURS BY MYSELF IN …
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I WAS DRIVING ON THE HIGHWAY AT 70MPH WHEN MY ENGINE SUDDENLY CUT. I LOST POWER STEERING AND BRAKES. LUCKILY, TRAFFIC WAS CLEAR ENOUGH AND AN EXIT RAMP WAS ACCESSIBLE; HOWEVER, I HAD A VERY DIFFICULT TIME STEERING TO THE SIDE AND THOUGHT I WAS GOING TO BE UNABLE TO BRAKE. I WAS STRANDED ON THE OFF RAMP FOR HOURS BY MYSELF IN 40 DEGREE WEATHER AND NO HEAT. MY GAS GAUGE HAS NOT WORKED FOR SEVERAL MONTHS (SEE MY FIRST COMPLAINT 10408603). I HAVE BEEN GUESSING AT AMOUNT OF FUEL BY MILES DRIVEN. I SHOULD HAVE HAD AT LEAST 30 MILES MORE OF GAS. OBVIOUSLY, THIS IS NOT A SAFE WAY TO GAUGE FUEL LEVEL. IT WILL COST $600 TO HAVE THE FUEL SYSTEM FIXED. BECAUSE THIS IS AN OBVIOUS PROBLEM WITH TRAILBLAZERS, I FEEL THE COMPANY SHOULD ISSUE A RECALL. *TR
NHTSA ODI #10435462
116,176 miles · Nov 13, 2011
Electrical System
BLOWER FAN STAYS ON CONSTANTLY EVEN WHEN IS CUT OFF. ONLY WAY TO CUT OFF FAN IS TO PULL OUT MODULE IN FUSE BOX UNDER HOOD.:( *TR
NHTSA ODI #10435389
50,000 miles · Nov 13, 2011
Electrical System
SPEEDOMETER JUMPS TO DIFFERENT SPEEDS . WHEN YOU SHUT OFF THE TRUCK IT WILL STAY STUCK 110MPH, OR WHEN YOU RESTART THE CAR IT WILL JUST JUMP DOWN A LITTLE 100MPH. OTHER CHEVY MODELS HAVE HAD RECALLS ON THE SAME PROBLEM BUT NOT CHEVY TRAILBLAZER? WHY *TR
NHTSA ODI #10435377
87,000 miles · Nov 8, 2011
Electrical SystemFuel System, Gasoline
THE FUEL GAUGE WENT OUT IN MY VEHICLE. MY SPEEDOMETER IS DOING THE SAME THING AND MY OIL GAUGE. HOW IS THAT NOT A SAFETY RECALL! CALLED THEY SAID THERE WAS NO RECALL. RECEIVED A NOTICE THAT THEY WOULD PAY HALF OF REPAIR FOR THE FUEL GAUGE. AFTER WARRANTY WAS UP. *TR
NHTSA ODI #10434894
60,000 miles · Nov 7, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING 35 MPH WHEN THE ABS WARNING LIGHT ILLUMINATED AND THE BRAKES MALFUNCTIONED. THE CONTACT HAD TO PUMP THE BRAKES AND SHIFT THE VEHICLE INTO A LOWER GEAR TO SLOW THE VEHICLE DOWN. THERE WAS ALSO AN ABNORMAL INCREASE IN STOPPING DISTANCE. THE CONTACT TOOK…
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TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING 35 MPH WHEN THE ABS WARNING LIGHT ILLUMINATED AND THE BRAKES MALFUNCTIONED. THE CONTACT HAD TO PUMP THE BRAKES AND SHIFT THE VEHICLE INTO A LOWER GEAR TO SLOW THE VEHICLE DOWN. THERE WAS ALSO AN ABNORMAL INCREASE IN STOPPING DISTANCE. THE CONTACT TOOK THE VEHICLE TO THE DEALER WHERE THE DEALER DIAGNOSED THE VEHICLE AS HAVING A FAULTY ABS MODULE. THE DEALER REPLACED THE ABS MODULE. THE FAILURE MILEAGE WAS 60,000.
NHTSA ODI #10434759
100,000 miles · Nov 7, 2011
Engine And Engine CoolingFuel System, Gasoline
TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING APPROXIMATELY 45-50 MPH WHEN THE VEHICLE WOULD SUDDENLY JERK FORWARD AS IF IT WERE ATTEMPTING TO STALL. IN ADDITION, THE FUEL GAUGE WOULD NOT OPERATE PROPERLY AND WOULD READ EMPTY AFTER SHE WOULD REFILL THE TANK. THE VEHICLE WAS NOT INSPECTED BY A DEALER …
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TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT WAS DRIVING APPROXIMATELY 45-50 MPH WHEN THE VEHICLE WOULD SUDDENLY JERK FORWARD AS IF IT WERE ATTEMPTING TO STALL. IN ADDITION, THE FUEL GAUGE WOULD NOT OPERATE PROPERLY AND WOULD READ EMPTY AFTER SHE WOULD REFILL THE TANK. THE VEHICLE WAS NOT INSPECTED BY A DEALER NOR REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS UNKNOWN AND THE CURRENT MILEAGE WAS APPROXIMATELY 100,000.
NHTSA ODI #10434435
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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