NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,466 reports49,500 miles · Feb 16, 2009
Electrical System
WHEN DRIVING SOMETIMES LIGHTS WILL BECOME DIM. WHEN ADJUSTING SEAT TO DRIVERS SIDE MIRROR ALSO TURNS UPWARD. IF OPENING RIGHT SIDE PASSENGER DOOR IN BACK WITH RADIO ON, RADIO GETS TERRIBLE BUZZING NOISE. I HAVE TO SHUT VEHICLE OFF AND TURN BACK ON AGAIN. ALSO MY CD PLAYERS HAS QUIT WORKING FOR NO REASON AT ALL AND GETS VERY HOT …
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WHEN DRIVING SOMETIMES LIGHTS WILL BECOME DIM. WHEN ADJUSTING SEAT TO DRIVERS SIDE MIRROR ALSO TURNS UPWARD. IF OPENING RIGHT SIDE PASSENGER DOOR IN BACK WITH RADIO ON, RADIO GETS TERRIBLE BUZZING NOISE. I HAVE TO SHUT VEHICLE OFF AND TURN BACK ON AGAIN. ALSO MY CD PLAYERS HAS QUIT WORKING FOR NO REASON AT ALL AND GETS VERY HOT AND ALSO SOMETIMES WHEN YOU START VEHICLE THE MILEAGE GAUGE WILL NOT WORK. HAVE TO SHUT VEHICLE OFF AND RESTART SOMETIMES. THIS IS A 2005 TRAILBLAZER. *TR
NHTSA ODI #10258781
70,194 miles · Feb 11, 2009
Electrical SystemFuel System, Gasoline
1. CHECK ENGINE LIGHT STAYS ON CONSISTENTLY NO MATTER WHAT REPAIRS I HAVE DONE. 2. SPEEDOMETER FAILS TO CONSTANTLY. I RECENTLY GOT A SPEEDING TICKET FOR NOT STAYING WITHIN SPEED LIMIT. 3. DEALERSHIP HAS CONSTANTLY SAID THEY HAVE NOT HEARD OF ANY COMPLAINTS BY ANY CONSUMERS. 4. ONSTAR SYSTEM HAS FAILED FROM A YEAR AFTER PURCHA…
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1. CHECK ENGINE LIGHT STAYS ON CONSISTENTLY NO MATTER WHAT REPAIRS I HAVE DONE. 2. SPEEDOMETER FAILS TO CONSTANTLY. I RECENTLY GOT A SPEEDING TICKET FOR NOT STAYING WITHIN SPEED LIMIT. 3. DEALERSHIP HAS CONSTANTLY SAID THEY HAVE NOT HEARD OF ANY COMPLAINTS BY ANY CONSUMERS. 4. ONSTAR SYSTEM HAS FAILED FROM A YEAR AFTER PURCHASE. 5. OCCASIONALLY STALLS AND SMELLS OF GASOLINE. *TR
NHTSA ODI #10258414
Mileage unknown · Feb 11, 2009
Fuel System, Gasoline
THE FUEL GAUGE ON MY 2005 CHEVY TRAILBLAZER HAS STOPPED WORKING. THE GAUGE ALWAYS READS EMPTY EVEN AFTER FILLING THE TANK TO THE FILL LEVEL. THIS PROBLEM JUST STARTED HAPPEN OUT OF THE BLUE ONE DAY ABOUT 6 MONTHS AGO. HAVE BEEN READING ONLINE THAT MANY PEOPLE ARE RUNNING INTO THIS ISSUE WITH 2004-2006 CHEVY TRAILBLAZERS. T…
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THE FUEL GAUGE ON MY 2005 CHEVY TRAILBLAZER HAS STOPPED WORKING. THE GAUGE ALWAYS READS EMPTY EVEN AFTER FILLING THE TANK TO THE FILL LEVEL. THIS PROBLEM JUST STARTED HAPPEN OUT OF THE BLUE ONE DAY ABOUT 6 MONTHS AGO. HAVE BEEN READING ONLINE THAT MANY PEOPLE ARE RUNNING INTO THIS ISSUE WITH 2004-2006 CHEVY TRAILBLAZERS. TO DATE, I HAVE NOT HAD THE PROBLEM LOOKED AT, BUT WILL BE WITHIN THE NEXT WEEK. *TR
NHTSA ODI #10258372
50,000 miles · Feb 11, 2009
Electrical System
WHEN DRIVING AT NIGHT AND NOT ON THE THROTTLE THE HEADLIGHTS AND INSTRUMENT LIGHTS FLASH ON AND OFF IN MY 05 TRAILBLAZER. IT DOES IT EVERY NIGHT AS I DRIVE HOME AND CAUSES PEOPLE AROUND ME TO DRIVE ERRATICALLY. THE TRUCK ALSO SUDDENLY REVS WHILE COMING TO A STOP. TWICE IT HAS CAUSED ME TO TAP THE PERSON IN FRONT OF ME WHILE MY…
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WHEN DRIVING AT NIGHT AND NOT ON THE THROTTLE THE HEADLIGHTS AND INSTRUMENT LIGHTS FLASH ON AND OFF IN MY 05 TRAILBLAZER. IT DOES IT EVERY NIGHT AS I DRIVE HOME AND CAUSES PEOPLE AROUND ME TO DRIVE ERRATICALLY. THE TRUCK ALSO SUDDENLY REVS WHILE COMING TO A STOP. TWICE IT HAS CAUSED ME TO TAP THE PERSON IN FRONT OF ME WHILE MY HEADLIGHTS ARE FLASHING SO IT BADLY SCARES PEOPLE AROUND ME. THE DEALERSHIP CLAIMS THEY CAN FIND NO FAULT IN THE TRUCK BUT THE PROBLEMS ARE BECOMING SO BAD THAT I AM AFRAID TO DRIVE THE TRUCK AND THAT IS A VERY BAD PLACE TO BE STUCK IN. I HAVE READ THAT MORE THEN A FEW PEOPLE HAVE THESE ISSUES AND THAT THERE IS NO FIX ACCORDING TO GM- SO I FELT THAT I HAD BETTER REPORT THIS HERE AS WELL. *TR
NHTSA ODI #10258317
17,023 miles · Feb 6, 2009
Seats
BOUGHT VEHICLE 8/10/05. FIFTEEN MONTHS LATER ON 1/29/07, I HAD TO REPLACE THE FRONT SEAT ADJUSTER ACTUATOR ASSEMBLY ON THE DRIVER SIDE. THE SAFETY HAZARD IS THAT I HAD TO DRIVE 3 WEEKS WITH PILLOWS PROPPED BEHIND ME & USING MY TIP-TOES ON THE GAS AND BRAKE PEDDLES UNTIL THE PART WAS REPLACED. THE SEAT STOPPED WORKING A FEW MONTH…
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BOUGHT VEHICLE 8/10/05. FIFTEEN MONTHS LATER ON 1/29/07, I HAD TO REPLACE THE FRONT SEAT ADJUSTER ACTUATOR ASSEMBLY ON THE DRIVER SIDE. THE SAFETY HAZARD IS THAT I HAD TO DRIVE 3 WEEKS WITH PILLOWS PROPPED BEHIND ME & USING MY TIP-TOES ON THE GAS AND BRAKE PEDDLES UNTIL THE PART WAS REPLACED. THE SEAT STOPPED WORKING A FEW MONTHS AGO AND IT TOOK A WEEK TO GET AN APPOINTMENT AT THE DEALER. THAT WEEK I HAD TO DRIVE WITH PILLOWS PROPPED BEHIND ME & USING MY TIP-TOES ON THE GAS AND BRAKE PEDDLES ON THE INTERSTATE TO GET TO WORK. WHEN THEY FINALLY GOT IT IN THE SHOP, THERE WAS NOTHING WRONG WITH IT. THIS MORNING GETTING READY TO GO TO WORK, MY SEAT DID NOT WORK AGAIN. I DROVE TO WORK USING TIP-TOES AND PILLOWS. WHEN I WAS LEAVING WORK, THE SEAT WORKED. HAVING TO RELY ON PILLOWS AND TIP-TOES BECAUSE OF AN UNRELIABLE DRIVER SIDE FRONT SEAT ADJUSTER ACTUATOR ASSEMBLY IS AN EXTREME SAFETY HAZARD TO MYSELF AND EVERYONE AROUND ME. *TR
NHTSA ODI #10257762
53,300 miles · Feb 5, 2009
Electrical SystemExterior Lighting
THE SPEEDOMETER STICKS AT VARIOUS SPEEDS. SOMETIMES IT SHOWS *BELOW* ZERO WHEN I'M MOVING. LAST NIGHT, I WAS TRAVELING AT APPROX. 65-70MPH, I ASSUME, BUT THE SPEEDOMETER WAS STUCK AT 30. WHEN DECELERATING, THE SPEEDOMETER WILL STICK AT CERTAIN SPEEDS, AND THEN JERK DOWN SUDDENLY. MY TRAILBLAZER ONLY HAS ABOUT 53,000 MILES …
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THE SPEEDOMETER STICKS AT VARIOUS SPEEDS. SOMETIMES IT SHOWS *BELOW* ZERO WHEN I'M MOVING. LAST NIGHT, I WAS TRAVELING AT APPROX. 65-70MPH, I ASSUME, BUT THE SPEEDOMETER WAS STUCK AT 30. WHEN DECELERATING, THE SPEEDOMETER WILL STICK AT CERTAIN SPEEDS, AND THEN JERK DOWN SUDDENLY. MY TRAILBLAZER ONLY HAS ABOUT 53,000 MILES ON IT. I HAVE SEEN REPORTS OF THIS ISSUE BEGINNING AT 30K, BUT MOST KICK IN AT AROUND 50K. I AM CALLING THE SHOP TODAY. FROM WHAT I'VE READ, IT'S RELATED TO A FAULTY STEPPER MOTOR. IF I AM ABLE TO UPDATE THIS REPORT, I WILL. HOWEVER, I THINK THIS IS VERY UNSAFE AND AM NOT GOING TO WAIT TO REPORT IT UNTIL AFTER THE REPAIR; I'VE SEEN AT LEAST 40 (I STOPPED COUNTING) OTHER COMPLAINTS ABOUT A MALFUNCTIONING SPEEDOMETER IN 05 TRAILBLAZERS ON ABOUTAUTOMOBILE.COM (I ALSO HAVE ISSUES WITH DIMMING LIGHTS AND HEADLIGHTS FLASHING AT NIGHT). *TR
NHTSA ODI #10257547
65,000 miles · Feb 4, 2009
Vehicle Speed ControlVisibility
2005 TRAILBLAZER: 1) SPEEDOMETER WOULD READ WRONG SPEED WHILE DRIVING, NEEDLE WOULD MAX OR ZERO OUT WHILE DRIVING, AND NOW IS COMPLETELY NOT WORKING; CAN NOT DETERMINE CORRECT SPEED WHICH COULD LEAD TO TICKET OR ACCIDENT. 2) WIPERS STAY ON WITH SWITCH IN THE OFF POSITION, MUST PULL FUSE TO STOP THEM; WIPERS ARE DISTRACTION GOING…
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2005 TRAILBLAZER: 1) SPEEDOMETER WOULD READ WRONG SPEED WHILE DRIVING, NEEDLE WOULD MAX OR ZERO OUT WHILE DRIVING, AND NOW IS COMPLETELY NOT WORKING; CAN NOT DETERMINE CORRECT SPEED WHICH COULD LEAD TO TICKET OR ACCIDENT. 2) WIPERS STAY ON WITH SWITCH IN THE OFF POSITION, MUST PULL FUSE TO STOP THEM; WIPERS ARE DISTRACTION GOING ACROSS DRY WINDOW OR MUST STOP TO PUT FUSE IN IF WEATHER REQUIRES. CURRENTLY VEHICLE IS IN SHOP FOR REPAIR. FIRST REPLACEMENT PART FOR WIPERS DID NOT SOLVE PROBLEM. THROUGH VIEWING OTHER INTERNET COMMENTS THIS IS NOT AN ISOLATED PROBLEM. IT NEEDS TO BE ADDRESSED BEFORE AN UNEXPECTED DRIVER IS INVOLVED IN AN ACCIDENT DO TO THESE ISSUES. *TR
NHTSA ODI #10257495
36,000 miles · Feb 3, 2009
Fuel System, Other
TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 55 MPH ON NORMAL ROAD CONDITIONS, THE VEHICLE STOPPED BECAUSE IT UNEXPECTEDLY RAN OUT OF FUEL. THE FUEL GAUGE DISPLAYED INACCURATE READINGS AND THE DRIVER WAS UNABLE TO DETERMINE THE VEHICLE'S FUEL TANK CAPACITY. ASSISTANCE WAS CALLED TO THE SCENE A…
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TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 55 MPH ON NORMAL ROAD CONDITIONS, THE VEHICLE STOPPED BECAUSE IT UNEXPECTEDLY RAN OUT OF FUEL. THE FUEL GAUGE DISPLAYED INACCURATE READINGS AND THE DRIVER WAS UNABLE TO DETERMINE THE VEHICLE'S FUEL TANK CAPACITY. ASSISTANCE WAS CALLED TO THE SCENE AND THE VEHICLE WAS TAKEN TO THE AUTHORIZED DEALER FOR INSPECTION. THE TECHNICIAN STATED THAT THE FAILURE WAS RELATED TO THE FUEL SENSOR. THE VEHICLE WAS REPAIRED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER ON A SEPARATE OCCASION FOR THE SAME FAILURE AND A PART WAS ORDERED FOR THE FAILED COMPONENT. THE VEHICLE CANNOT BE REPAIRED AGAIN UNTIL THE PART IS AVAILABLE. THE FAILURE MILEAGE WAS 36,000.
NHTSA ODI #10257337
35,000 miles · Jan 31, 2009
Fuel System, Gasoline
THE GAS GAUGE ON MY 2005 TRAILBLAZER IS DEFECTIVE. THE GAUGE BEGAN TO MALFUNCTION ABOUT ONE YEAR AGO. WHEN I FILL THE TANK, THE GAUGE DROPS TO EMPTY. IT THEN FLOATS AROUND AND I NEVER KNOW HOW MUCH GAS I ACTUALLY HAVE. I HAVE TO USE MY TRIP METER TO KNOW WHEN I NEED TO FILL UP. THIS IS A DANGEROUS AND WORRISOME THING TO DEAL WIT…
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THE GAS GAUGE ON MY 2005 TRAILBLAZER IS DEFECTIVE. THE GAUGE BEGAN TO MALFUNCTION ABOUT ONE YEAR AGO. WHEN I FILL THE TANK, THE GAUGE DROPS TO EMPTY. IT THEN FLOATS AROUND AND I NEVER KNOW HOW MUCH GAS I ACTUALLY HAVE. I HAVE TO USE MY TRIP METER TO KNOW WHEN I NEED TO FILL UP. THIS IS A DANGEROUS AND WORRISOME THING TO DEAL WITH. I WOULD HATE TO RUN OUT OF GAS ON THE INTERSTATE BY MYSELF. I HAVE RESEARCHED THIS ON THE INTERNET AND APPARENTLY THIS IS A WIDESPREAD PROBLEM. *TR
NHTSA ODI #10257027
80,000 miles · Jan 26, 2009
Air BagsCrashInjury
TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT WAS THE PASSENGER IN A VEHICLE TRAVELING 35 MPH ON ICY ROAD CONDITIONS. ANOTHER VEHICLE PULLED OUT IN FRONT OF THEM AND CRASHED INTO THE VEHICLE. THE VEHICLE WAS DESTROYED AND THE AIR BAGS FAILED TO DEPLOY. THE CONTACT WAS TRANSPORTED TO THE HOSPITAL BY AMBULANCE.…
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TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT WAS THE PASSENGER IN A VEHICLE TRAVELING 35 MPH ON ICY ROAD CONDITIONS. ANOTHER VEHICLE PULLED OUT IN FRONT OF THEM AND CRASHED INTO THE VEHICLE. THE VEHICLE WAS DESTROYED AND THE AIR BAGS FAILED TO DEPLOY. THE CONTACT WAS TRANSPORTED TO THE HOSPITAL BY AMBULANCE. HER NECK WAS SNAPPED BACKWARDS. THE SEAT BELT PROPERLY RESTRAINED HER AT THE TIME OF THE CRASH. A POLICE REPORT WAS FILED AND THE OTHER DRIVER RECEIVED A CITATION. THE DEALER WAS UNABLE TO DETERMINE WHY THE AIR BAGS FAILED. THE FAILURE MILEAGE WAS 80,000.
NHTSA ODI #10256371
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.