2005 Chevrolet Trailblazer

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.

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.

The contact owned a 2005 Chevrolet Trailblazer. The contact stated that while driving approximately 35 MPH, the vehicle crashed into the rear passenger side of a second vehicle. During the crash, no air bags in the vehicle deployed. The contact sustained neck, shoulders, and back injuries and was transported to the local hospital. A Police report was filed at the scene but was not available. The vehicle was towed to a local towing yard. The cause of the failure was not yet determined. The insurance company deemed the vehicle a total loss. The manufacturer was notified of the failure. The failure mileage was 168,000

NHTSA ID

11754385

Incident

May 2, 2026

Mileage

168,000 mi

The contact owns a 2005 Chevrolet Trailblazer. The contact stated that while driving at an undisclosed speed, the brakes failed to operate as needed and the vehicle nearly crashed. Additionally, the contact reported that the rear of the vehicle lifted significantly and made a popping sound while driving. The vehicle was driven to an independent mechanic who diagnosed the vehicle with brake line failures, ABS malfunction, and severe structural deterioration of the undercarriage and the sub frame. The contact had recently purchased the vehicle and was informed that the vehicle was in good condition. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 109,124.

NHTSA ID

11730050

Incident

Apr 8, 2026

Mileage

109,124 mi

Fuel gauge intermittently reports empty when vehicle was just fully filled with fuel

NHTSA ID

11714358

Incident

Jul 5, 2024

The contact owns a 2005 Chevrolet Trailblazer. The contact stated that while driving at an undisclosed speed, the windshield wipers activated unintendedly, and the washer fluid was continuously sprayed on the windshield. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to an unknown dealer, where it was diagnosed with the windshield wiper control module failure. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 04V046000 (Visibility), but the VIN was not included. The manufacturer was notified of the failure, a case was filed, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 151,000.

NHTSA ID

11701214

Incident

Nov 24, 2025

Mileage

151,000 mi

My airbags didn’t go off in crash

NHTSA ID

11668390

Incident

Jun 4, 2025

The airbags failed to deploy In a significant collision where hood, radiator, grill/number and both headlights were damaged. GM has been contacted and fail and refuse to do an inspection stating the issue is time barred to 10 years to original warranty of vehicle and are failing to acknowledge manufacturer defect or issue a recall. There were no warning signs/lights prior to notify that the airbags would fail to deploy in an accident. The vehicle has not inspected, even a request has been made on multiple occasions, with getting the runaround and claim closed. The lack of safety puts other drivers/owners of the 2005 Trailblazer and or similar vehicles at risk, at time they will need it the most to find out airbags are defective and will not work. Injuries and lives are at risk only for GM to run a cover up and not stand up to do what is right. Police report number [XXX] Adams Co Sheriff's Office, could not upload. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11578840

Incident

Nov 26, 2023

The contact owns a 2005 Chevrolet Trailblazer. The contact stated that while driving at an undisclosed speed, the air bag warning light illuminated. The vehicle was taken to a dealer where it was diagnosed and determined that the seat belt pretensioner needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 186,228.

NHTSA ID

11557452

Incident

Nov 29, 2023

Mileage

186,228 mi

FOR SEVERAL YEARS THE LOW BEAM HEADLIGHTS WOULD GO OFF AND ON INTERMITTENTLY. NOW, THEY ARE MOSTLY OFF WHICH MEANS I CANNOT DRIVE MY VEHICLE AT NIGHT ANYMORE UNLESS I WANT TO BLIND PEOPLE OR GET STOPPED. I HAVE CHANGED HEADLAMPS, RELAYS AND FUSES TO NO AVAIL. NOW, I SEE THAT MANY OTHERS WITH THE SAME MAKE AND MODEL SUV HAVE BEEN HAVING THE SAME ISSUE BUT NO RECALLS HAVE BEEN ISSUED FOR THIS YEAR MODEL. THIS IS A MAJOR SAFETY ISSUE WHEN WE HAVE TO DRIVE WITH THE HIGH BEAMS ON AND WHEN THE LIGHTS GO OFF UNEXPECTEDLY. IF YOU WILL ISSUE A RECALL FOR ONE YEAR MODEL HAVING A PARTICULAR ISSUE, WHY WOULD YOU NOT DO THE SAME WITH ALL YEAR MODELS HAVING THE SAME ISSUE? COME ON CHEVROLET AND NHTSA, LET'S GET THIS PROBLEM SOLVED TO SAVE SOME LIVES. IT IS VERY SCARY TO BE DRIVING AND HAVE YOUR HEADLIGHTS GO OUT AND A MAJOR PAIN TO HAVE TO BE SURE YOU ARE HOME BY DARK OR NOT BE ABLE TO GO OUT AFTER DARK BECAUSE YOUR HEADLAMPS ARE OR MAY STOP WORKING.

NHTSA ID

11499496

Incident

Dec 30, 2022

This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.

This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.