2007 Chevrolet Trailblazer Headlight Problems

Which parts fail

• Headlights
  10
• Headlights › Switch
  2

Components named in complaints (headlights, tail lights, turn signals, interior lights).

Mileage when the problem started

• Under 25k
  32%
• 25k–50k
  97%
• 50k–75k
  1814%
• 75k–100k
  1713%
• 100k–150k
  5341%
• 150k+
  2922%

Owner reports

Selected complaints filed with NHTSA by 2007 Chevrolet Trailblazer owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owns a 2007 Chevrolet Trailblazer. The contact stated while driving 55 MPH at nighttime, the low-beam headlights started flickering, and then became inoperable. The vehicle decelerated and veered to the side of the road. The contact engaged the high-beam headlights and continued driving. The contact stated that he replaced the low-beam headlights relay several times. Additionally, the contact replaced the low beam headlights switch, bulb, and fuses; however, the failure persisted. The local dealer and a second dealer, Pohanka Chevrolet (13915 US-50, Chantilly, VA 20151) were notified of the failure and informed the contact that the VIN was not included in a recall. The contact related the failure to GM Campaign Number: N140291. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. …

The contact owns a 2007 Chevrolet Trailblazer. The contact stated that while driving at various speeds, the headlights became inoperable without warning. The contact stated that the failure had occurred several times. The contact replaced the headlight bulbs three times, the fuse, and the switch. The failure persisted. The contact had spoken with the dealer who stated the headlamp driver module (HDM) module needed to be replaced; however, the vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The manufacturer informed the contact that an unknown recall for the failure had expired. The approximate failure mileage was 200,200.

The contact owns a 2007 Chevrolet Trailblazer. The contact stated that while driving at night, the low-beam headlights would not provide adequate illumination for safe driving. The hi-beam headlight would be used to provide adequate illumination. Upon investigation, the contact discovered NHTSA Campaign Number: 15V519000 (Exterior Lighting) which she linked to the failure. The contact had taken the vehicle to a dealer where she was informed that there were no recalls on the VIN. The contact was able to replace the module and fuses; however, the headlights remained defective. The vehicle had yet to be repaired. The failure mileage was 219,000.

My headlights turn off bybthemselves while driving, other times they wont turn off at all after car is turned off even while in park, and other times they turn on while switched to off position randomly in the middle of te night resulting in a dead battery come morning. My driver window no longer works as well as driver power locks. Happening since 2020 random at first now permentant removal of fuse switch in order to shut off lights and the fuse switch is hot to the touch upon removal.

Tl* the contact owns a 2007 Chevrolet Trailblazer. The contact stated that the driver and passenger side low beam headlights failed to function due to the head lamp driver module overheating. Also, the fuse box melted and there were no flames visible. Whenever the vehicle was driven at night, the high beam headlights were activated. The VIN was not included in NHTSA campaign number: 14V755000 (exterior lighting). The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 120,000.

Tl* the contact owns a 2007 Chevrolet Trailblazer. On several occasions, the low beam headlamps failed to illuminate. The contact, an auto mechanic, stated that the headlamp driver module (hdm) overheated and failed. The contact also stated that the hdm was melted. The vehicle was not repaired. The manufacturer was notified of the failure. The vehicle was not included in NHTSA campaign number: 15V519000 (exterior lighting). The approximate failure mileage was 101,386.

Low beam headlights went out while driving at night. This is the 3rd time this has happened and it almost killed me because I was on a winding road with no street lamps. It was pitch dark. I threw on the high beams and saw that I was about to crash into the center divider. I was able to maneuver the vehicle and get it back on the road without an incident. I called GM customer assistance center and spoke with [redacted] ext [redacted] and he told me that the recall that is out for this issue does not include my VIN number. I explained to him that I was experiencing the same problem that the other trailblazers are having and he told me that I would have to pay for this issue myself if I wanted it to be fixed. I need GM to know that my vehicle is having this same issue and it needs to be recalled for this issue. …

Problem with fatality risk. In aug 2016 low beam headlights and running lamp began turning off randomly, intermittently. Will usually work when vehicle is first started, fail in transit. Increases in frequency, progresses to failure. On lit streets,I have no indication that I am essentially invisible. Relay replaced by dealer, paid for 10/1/16. Mileage 137K at that time. Began failing again 7/2017. Drm module had failed. Part alone cost $267. Prior to dealer repair, I had tried auto parts store modules as well, and each 2 burned out within 1-2 months. GM has issued a recall for this very problem, I think number 14921, established May 2016. It includes 2006-2007 trailblazers. They extended it to 12 years old or 150K miles, whichever first. I contacted GM. They me that my VIN does not come up so they will not cover this. …

Vehicle daytime running lamps and low beam headlamps failed again. Took to dealership but was closing time. Dealer documented failure but did not have time to diagnose. Manufacturer notified of failure (up to executive level) but refused to include my VIN in the existing recall campaign for headlamp failures. Husband, who is a mechanic, switched hdm module with fan module, and headlamps came back on. This points to same type of failure included in existing campaign. Please get these VIN's included in the recall. Mileage was 88,122 for this failure. Previous failure also reported. Impossible to get dealer to diagnose this when driver has mostly noticed low beam headlamp failure at night--when dealers are closed. What is the driver supposed to do when GM refuses to provide assistance with replacing the part--simply because they insist that a dealer firmly diagnose it. …

Approximately 2 years ago my dim headlights went out as I was driving at night. I thought to switch to high beams and luckily they worked on high beam thank goodness this was a road I knew well.. I have no way of knowing how often this happens during the daytime. But it occurred several times after this. I had my vehicle checked and was told it was a relay. Changed it and problem solved, until now. The issue is back, GM sent me a "special coverage" letter, I called the number on the letter and was directed to take it to a chev. Dealership to confirm my vehicle does have the headlamp driver module issue then Chevrolet will let me know what would be next. They did confirm my vehicle has the issue but Chevrolet will not cover my vehicle because it is over the mileage of 150,000. Really? …

Related recalls

NHTSA investigations

Headlight complaints in other Trailblazer years