NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
193 reports26,000 miles · Jun 14, 2010
Power TrainInjury
TL* THE CONTACT OWNS A 2008 CHEVROLET TRAILBLAZER. THE CONTACT WAS EXITING THE VEHICLE WITH THE ENGINE OFF AND THE VEHICLE INDEPENDENTLY BEGAN ROLLING BACKWARD. THE DRIVER'S DOOR KNOCKED HER DOWN AND SHE SUFFERED MINOR INJURIES. THE VEHICLE CONTINUED TO ROLL INTO THE STREET WITHOUT INCIDENT. THE CONTACT DID NOT TAKE THE VEHICLE …
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TL* THE CONTACT OWNS A 2008 CHEVROLET TRAILBLAZER. THE CONTACT WAS EXITING THE VEHICLE WITH THE ENGINE OFF AND THE VEHICLE INDEPENDENTLY BEGAN ROLLING BACKWARD. THE DRIVER'S DOOR KNOCKED HER DOWN AND SHE SUFFERED MINOR INJURIES. THE VEHICLE CONTINUED TO ROLL INTO THE STREET WITHOUT INCIDENT. THE CONTACT DID NOT TAKE THE VEHICLE TO THE DEALER FOR DIAGNOSIS OR REPAIRS. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE AND CURRENT MILEAGES WERE 26,000.
NHTSA ODI #10336221
15,500 miles · Jun 11, 2010
Electronic Stability Control (esc)
WHILE DRIVING MULTIPLE TIMES REACHING A RIGHT HAND CURVE AT HIGHWAY SPEEDS THE ELECTRONIC STABILITY CONTROL LIGHT FLASHES AND THE ANTI-LOCK BRAKES SIMULTANEOUSLY ENGAGE MULTIPLE TIMES SOMETIMES BAD ENOUGH TO CAUSE A WHEEL TO SLIP. DEALER HAS BEEN IN TOUCH MULTIPLE TIMES WITH GM ABOUT THE PROBLEM AND CLAIM THEY CANT FIGURE OUT W…
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WHILE DRIVING MULTIPLE TIMES REACHING A RIGHT HAND CURVE AT HIGHWAY SPEEDS THE ELECTRONIC STABILITY CONTROL LIGHT FLASHES AND THE ANTI-LOCK BRAKES SIMULTANEOUSLY ENGAGE MULTIPLE TIMES SOMETIMES BAD ENOUGH TO CAUSE A WHEEL TO SLIP. DEALER HAS BEEN IN TOUCH MULTIPLE TIMES WITH GM ABOUT THE PROBLEM AND CLAIM THEY CANT FIGURE OUT WHAT'S WRONG. HAPPENS MULTIPLE TIMES PER WEEK. *TR
NHTSA ODI #10335855
23,150 miles · May 18, 2010
Vehicle Speed Control
TL* THE CONTACT OWNS A 2008 CHEVROLET TRAILBLAZER. WHILE DRIVING AT 10 MPH APPROACHING A STOP SIGN, THERE WAS AN ABNORMAL INCREASE IN ENGINE RPMS. THE CONTACT SHUT OFF THE ENGINE TO CORRECT THE FAILURE. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE FAILURE MILEAGE WAS 23,150 AND THE CURRENT MILE…
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TL* THE CONTACT OWNS A 2008 CHEVROLET TRAILBLAZER. WHILE DRIVING AT 10 MPH APPROACHING A STOP SIGN, THERE WAS AN ABNORMAL INCREASE IN ENGINE RPMS. THE CONTACT SHUT OFF THE ENGINE TO CORRECT THE FAILURE. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE FAILURE MILEAGE WAS 23,150 AND THE CURRENT MILEAGE WAS UNKNOWN. UPDATED 07/16/10 *BF UPDATED 07/27/10
NHTSA ODI #10331046
38,000 miles · May 18, 2010
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2008 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 40 MPH, THE BRAKES LOCKED WITHOUT WARRANT. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER WHERE THE FAILURE WAS UNABLE TO BE DUPLICATED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 38,000.
NHTSA ODI #10330956
13,800 miles · May 16, 2010
Service Brakes, Hydraulic
I HAVE A 2008 CHEVY TRAILBLAZER SS WITH 13800 MILES ON IT. I WAS DRIVING IN NORMAL TRAFFIC CONDITIONS ON CITY STREETS WHEN MY BRAKES APPLIED THEM SELVES AND BEGAN TO CAUSE THE VEHICLE TO SLOW DOWN TO A STOP WHILE DRIVING. I HAD TO PRESS ON THE GAS PEDAL HEAVILY SO THE VEHICLE WOULD MOVE TO AVOID A COLLISION WITH VEHICLES TURNING…
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I HAVE A 2008 CHEVY TRAILBLAZER SS WITH 13800 MILES ON IT. I WAS DRIVING IN NORMAL TRAFFIC CONDITIONS ON CITY STREETS WHEN MY BRAKES APPLIED THEM SELVES AND BEGAN TO CAUSE THE VEHICLE TO SLOW DOWN TO A STOP WHILE DRIVING. I HAD TO PRESS ON THE GAS PEDAL HEAVILY SO THE VEHICLE WOULD MOVE TO AVOID A COLLISION WITH VEHICLES TURNING AHEAD OF ME AND ALSO VEHICLES TRAVELING BEHIND ME. I GOT TO A SAFE AREA AND PULLED OVER AND SAW THAT THE GAS PEDAL WAS FIRM AS CAN BE AND WOULD NOT LOOSEN UP, I SHIFTED THE VEHICLE INTO PARK AND THE BRAKES DISENGAGED. I TOOK THE VEHICLE TO THE DEALER THE NEXT DAY AND THEY WHERE UN ABLE TO REPLICATE THE PROBLEM AND RETURNED THE VEHICLE TO ME WITH NO REPAIRS COMPLETED. I ASKED THEM TO DOCUMENT THIS IN CASE IT HAPPENS AGAIN AND CAUSES A CRASH SO THEY CAN BE HELD LIABLE. I DO NOT FEEL SAFE OPERATING MY VEHICLE ANYMORE KNOWING THAT AT ANY TIME MY BRAKES MIGHT TURN ON. *TR
NHTSA ODI #10330602
25,000 miles · Apr 13, 2010
SteeringSuspension
2008 CHEVY TRAILBLAZER SHUTTERS IN FRONT END AT HIGHWAY SPEEDS. *TR
NHTSA ODI #10325489
24,000 miles · Mar 24, 2010
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2008 CHEVROLET TRAILBLAZER. WHEN THE CONTACT ATTEMPTED TO ACCELERATE AT A TRAFFIC LIGHT, THE BRAKES WOULD NOT DISENGAGE. HE ATTEMPTED TO RELEASE THE BRAKES BY SHIFTING GEARS AND APPLY CONSTANT, STEADY PRESSURE TO THE BRAKE PEDAL. WITHIN A FEW MINUTES, THE BRAKE RELEASED. ON A SEPARATE OCCASION, WHILE DRIVI…
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TL* THE CONTACT OWNS A 2008 CHEVROLET TRAILBLAZER. WHEN THE CONTACT ATTEMPTED TO ACCELERATE AT A TRAFFIC LIGHT, THE BRAKES WOULD NOT DISENGAGE. HE ATTEMPTED TO RELEASE THE BRAKES BY SHIFTING GEARS AND APPLY CONSTANT, STEADY PRESSURE TO THE BRAKE PEDAL. WITHIN A FEW MINUTES, THE BRAKE RELEASED. ON A SEPARATE OCCASION, WHILE DRIVING AT SPEEDS OF 15 MPH, THE BRAKES LOCKED. HE ABRUPTLY DEPRESSED THE ACCELERATOR PEDAL IN AN ATTEMPT TO AVOID A POTENTIAL CRASH. HE WAS ABLE TO MANEUVER THE VEHICLE OFF OF THE ROAD AND SHUT OFF THE ENGINE. UPON RESTARTING THE VEHICLE, IT FUNCTIONED NORMALLY. THE WARNING LIGHTS ILLUMINATED DURING BOTH FAILURES. THE DEALER COULD NOT DUPLICATE NOR DETERMINE THE CAUSE OF THE FAILURE. THERE WERE NO REPAIRS MADE TO THE VEHICLE. THE MANUFACTURER WAS NOT NOTIFIED. THE CURRENT MILEAGE WAS 31,225 AND THE FAILURE MILEAGE WAS APPROXIMATELY 24,000.
NHTSA ODI #10321715
15 miles · Mar 17, 2010
Power Train
2008 TRAILBLAZER SHAKES FRONT END AT HIGHWAY SPEED, AND TRANSMISSION BOGS DOWN TRAVELING NORMAL SPEED AS WELL. *TR
NHTSA ODI #10320370
Mileage unknown · Mar 10, 2010
Engine And Engine Cooling
I HAVE A 2008 TRAIL BLAZER AD THE EXHAUST MANIFOLD HAS A BIG CRACK IN IT. THIS TRIAL BLAZER IS NOT THAT OLD. TO ME THIS SEEMS BE A MANUFACTURING DEFECT. PLEASE ADVISE . *TR
NHTSA ODI #10318469
Mileage unknown · Dec 7, 2009
Electrical System
WHILE ENTERING A GAS STATION THE VEHICLE IN FRONT OF ME SLAMMED ON THE BRAKES. THIS WAS DONE BECAUSE THE GM AT THE PUMP HAD IT'S BACKUP LIGHTS ON AND WASN'T EVEN BACKING UP. WHAT'S REALLY DISTURBING IS THE FACT PEOPLE WILL START TA IGNORE THESE IN DARK OR RAINY PARKING LOTS AND POTENTIALLY GET RUN OVER. SHOULDN'T BACKUP LIGHTS O…
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WHILE ENTERING A GAS STATION THE VEHICLE IN FRONT OF ME SLAMMED ON THE BRAKES. THIS WAS DONE BECAUSE THE GM AT THE PUMP HAD IT'S BACKUP LIGHTS ON AND WASN'T EVEN BACKING UP. WHAT'S REALLY DISTURBING IS THE FACT PEOPLE WILL START TA IGNORE THESE IN DARK OR RAINY PARKING LOTS AND POTENTIALLY GET RUN OVER. SHOULDN'T BACKUP LIGHTS ONLY BE USED FOR BACKING UP? THIS LOOKS LIKE A PROBLEM WITH THE WHOLE VEHICLE LINEUP. *TR
NHTSA ODI #10294822
NHTSA investigations
1RQ17002 · 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.