NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,466 reports89,000 miles · Jun 9, 2011
Fuel System, Other
TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. WHILE THE VEHICLE WAS PARKED THE CONTACT ADDED FUEL AND THE FUEL GAUGE BEGAN FLUCTUATING BETWEEN EMPTY AND FULL. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE VEHICLE WAS NOT REPAIRED. THERE WAS AN INVESTIGATION UNDER NHTSA ACTION NUMBER: DP10001 (FUEL SYST…
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TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. WHILE THE VEHICLE WAS PARKED THE CONTACT ADDED FUEL AND THE FUEL GAUGE BEGAN FLUCTUATING BETWEEN EMPTY AND FULL. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE VEHICLE WAS NOT REPAIRED. THERE WAS AN INVESTIGATION UNDER NHTSA ACTION NUMBER: DP10001 (FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM) THAT MAY BE RELATED TO THE FAILURE. THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 89,000.
NHTSA ODI #10405691
82,000 miles · Jun 7, 2011
Fuel System, Gasoline
GAS GAUGE DOES NOT ACCURATELY ACCOUNT FOR WHAT IS IN THE FUEL TANK. AFTER FILLING THE TANK UP WITH GASOLINE THE GAUGE WILL GO TO EMPTY AND THE LOW FUEL LIGHT WILL COME ON. THE GAUGE WILL MOVE FROM FULL TO EMPTY PERIODICALLY. HAVE BEEN USING THE DIGITAL FUEL USED READOUT TO GAUGE WHEN I NEED TO REFUEL.
NHTSA ODI #10406348
84,565 miles · Jun 3, 2011
Fuel System, Gasoline
WHILE DRIVING DOWN HIGHWAY, FUEL GAUGE BEGAN MOVING RADICALLY FROM EMPTY TO FULL AND NEVER STABILIZED. EACH TIME THE GAUGE APPROACHED THE "EMPTY" THE WARNING LIGHT AND ALARM WOULD SOUND. CONSTANT MOVEMENT OF FUEL GAUGE AND ALARM IS DISTRACTING TO DRIVER. INACCURATE FUEL MEASUREMENT CAUSES CONCERN FOR DIVER WHICH IS AN UNNECES…
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WHILE DRIVING DOWN HIGHWAY, FUEL GAUGE BEGAN MOVING RADICALLY FROM EMPTY TO FULL AND NEVER STABILIZED. EACH TIME THE GAUGE APPROACHED THE "EMPTY" THE WARNING LIGHT AND ALARM WOULD SOUND. CONSTANT MOVEMENT OF FUEL GAUGE AND ALARM IS DISTRACTING TO DRIVER. INACCURATE FUEL MEASUREMENT CAUSES CONCERN FOR DIVER WHICH IS AN UNNECESSARY DISTRACTION FROM DRIVING THAT COULD LEAD TO ACCIDENT.
NHTSA ODI #10405093
90,000 miles · Jun 3, 2011
Fuel System, Gasoline
TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE FUEL GAUGE CONSTANTLY DISPLAYED AN INACCURATE READING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP WHERE THE CONTACT WAS INFORMED THAT THE FUEL SENDING UNIT NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 90,000 AN…
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TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE FUEL GAUGE CONSTANTLY DISPLAYED AN INACCURATE READING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP WHERE THE CONTACT WAS INFORMED THAT THE FUEL SENDING UNIT NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 90,000 AND THE CURRENT MILEAGE WAS 104,000. UPDATED 07/20/11*LJ THE CONSUMER STATED HE RAN OUT OF FUEL ON THREE OCCASIONS. THE CONSUMER STATED THE FUEL GAUGE READ FULL, WHEN THERE WAS NO GAS AND IT READ EMPTY, WHEN THERE WAS GAS. UPDATED 12/02/11
NHTSA ODI #10404294
70,000 miles · Jun 1, 2011
Electrical SystemFuel System, Gasoline
ERRATIC FUEL GAUGE, REPORTS NO FUEL EVEN WHEN FUEL AVAILABLE, REPORTS 1/4 TANK OF FUEL AVAILABLE AND NO FUEL MAY BE AVAILABLE OR I MAY HAVE JUST FILLED THE TANK; ALSO REPORTS NO FUEL OR LOW FUEL WHEN TANK HAS BEEN FILLED. VEHICLE HAS STALLED OUT AND WOULD NOT START; WAS OUT OF FUEL BUT GAUGE INDICATED 1/4 TANK OF FUEL. OIL GAUGE…
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ERRATIC FUEL GAUGE, REPORTS NO FUEL EVEN WHEN FUEL AVAILABLE, REPORTS 1/4 TANK OF FUEL AVAILABLE AND NO FUEL MAY BE AVAILABLE OR I MAY HAVE JUST FILLED THE TANK; ALSO REPORTS NO FUEL OR LOW FUEL WHEN TANK HAS BEEN FILLED. VEHICLE HAS STALLED OUT AND WOULD NOT START; WAS OUT OF FUEL BUT GAUGE INDICATED 1/4 TANK OF FUEL. OIL GAUGE HAS ALSO BECOME ERRATIC; AND GOES FROM SHOWING NO OIL PRESSURE TO LOW OIL PRESSURE TO VERY HIGH PRESSURE. HAVE TO PULL OVER IMMEDIATELY AND CHECK OIL LEVEL AT SIDE OF ROAD OR WHERE EVER AVAILABLE TO DO SO AT TIME. NOT ALWAYS SAFE AREA TO PULL OFF. BOTH ISSUES CREATE VERY HAZARDOUS AND DANGEROUS SITUATIONS FOR THE DRIVER AND PASSENGERS IN THE VEHICLE.
NHTSA ODI #10404929
104,000 miles · Jun 1, 2011
Electrical SystemExterior Lighting
TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE GASOLINE GAUGE AND THE SPEEDOMETER FAILED. SHE WAS UNABLE TO SEE HOW FAST SHE WAS TRAVELING OR WHETHER OR NOT SHE HAD A SUFFICIENT AMOUNT OF FUEL IN THE VEHICLE. IN ADDITION, THE HEADLIGHTS WOULD ALSO SHUT OFF ON AN INTERMITTENT BASIS WHICH CAUSED HER…
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TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE GASOLINE GAUGE AND THE SPEEDOMETER FAILED. SHE WAS UNABLE TO SEE HOW FAST SHE WAS TRAVELING OR WHETHER OR NOT SHE HAD A SUFFICIENT AMOUNT OF FUEL IN THE VEHICLE. IN ADDITION, THE HEADLIGHTS WOULD ALSO SHUT OFF ON AN INTERMITTENT BASIS WHICH CAUSED HER TO CHANGE THE BULBS FREQUENTLY. THE VEHICLE WAS NOT INSPECTED BY A DEALER NOR HAD IT BEEN REPAIRED. THE MANUFACTURER WAS CONTACTED AND ADVISED HER THAT THERE WERE NO RECALLS ON THE VEHICLE. THE FAILURE MILEAGE WAS APPROXIMATELY 104,000.
NHTSA ODI #10404085
109,760 miles · May 31, 2011
Fuel System, Gasoline
2005 CHEVROLET TRAILBLAZER CONSISTENTLY REGISTER INCORRECT FUEL LEVEL CAUSING AN UNSAFE CONDITION WHERE THE DRIVER CANNOT DETERMINE CURRENT FUEL LEVEL. GAUGE INSTANTLY READS EMPTY UPON FILLING , AND THEN MOVES ERRATICALLY WHILE DRIVING. THIS CONDITION IS UNSAFE AS IT CAN CAUSE THE ENGINE TO STALL AT SPEED WHILE IN TRAFFIC. THIS …
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2005 CHEVROLET TRAILBLAZER CONSISTENTLY REGISTER INCORRECT FUEL LEVEL CAUSING AN UNSAFE CONDITION WHERE THE DRIVER CANNOT DETERMINE CURRENT FUEL LEVEL. GAUGE INSTANTLY READS EMPTY UPON FILLING , AND THEN MOVES ERRATICALLY WHILE DRIVING. THIS CONDITION IS UNSAFE AS IT CAN CAUSE THE ENGINE TO STALL AT SPEED WHILE IN TRAFFIC. THIS ACCORDING TO RESEARCH IS A COMMON PROBLEM IN THIS VEHICLE AND LIKE GM MODELS. *TR
NHTSA ODI #10403925
87,866 miles · May 28, 2011
Fuel System, Other
MY GAS GAUGE IS DEFECTIVE. I RAN OUT OF GAS ON INTERSTATE 17 BECAUSE THE GAUGE INSIDE THE VEHICLE READ 1/2 FULL WHEN THE VEHICLE WAS OUT OF GAS. *TR
NHTSA ODI #10403631
100,000 miles · May 26, 2011
Electrical System
1.) NOTHING I CAN THINK OF THAT I DID CAUSED THE PROBLEM TO START. 2.) THE SPEEDOMETER IN MY 2005 TRAILBLAZER SIMPLY DOES NOT TELL THE CORRECT SPEED. NEARLY EVER TIME I DRIVE THE TACK WILL EITHER STAY AT 0 OR WILL GO UP TO AND BEYOND 120 MPH. I HAVE RESORTED TO USING MY GPS TO TELL MY SPEED, BUT IT IS A LARGE INCONVENIENCE TO M…
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1.) NOTHING I CAN THINK OF THAT I DID CAUSED THE PROBLEM TO START. 2.) THE SPEEDOMETER IN MY 2005 TRAILBLAZER SIMPLY DOES NOT TELL THE CORRECT SPEED. NEARLY EVER TIME I DRIVE THE TACK WILL EITHER STAY AT 0 OR WILL GO UP TO AND BEYOND 120 MPH. I HAVE RESORTED TO USING MY GPS TO TELL MY SPEED, BUT IT IS A LARGE INCONVENIENCE TO ME AND MAY OTHERS THAT I HAVE FOUND ONLINE. 3.) I HAVE JUST BEGUN TO RESEARCH THE PROBLEM SO I HAVE NOT DONE ANYTHING TO FIX THE ISSUE. *TR
NHTSA ODI #10402873
50,000 miles · May 25, 2011
Electrical SystemFuel System, Gasoline
TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 35 MPH THE SPEEDOMETER BEGAN TO MOVE ERRATICALLY. THE SPEEDOMETER READING FLUCTUATED AND DISPLAYED THE INCORRECT SPEEDS. THE FUEL GAUGE ALSO DID NOT DISPLAY THE ACCURATE AMOUNT OF GASOLINE IN THE FUEL TANK. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE…
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TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 35 MPH THE SPEEDOMETER BEGAN TO MOVE ERRATICALLY. THE SPEEDOMETER READING FLUCTUATED AND DISPLAYED THE INCORRECT SPEEDS. THE FUEL GAUGE ALSO DID NOT DISPLAY THE ACCURATE AMOUNT OF GASOLINE IN THE FUEL TANK. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE TECHNICIANS STATED THE FUEL LEVEL SENSOR AND THE INSTRUMENT CLUSTER NEEDED TO BE REPLACED. THERE WAS AN OPEN INVESTIGATION UNDER NHTSA ACTION NUMBER: DP10001 (FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP) WHICH MAY BE RELATED TO THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND AGREED TO COVER THE REPAIR COST FOR THE INSTRUMENT CLUSTER. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 50,000.
NHTSA ODI #10402723
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.