The problem
On certain trucks and sport utility vehicles, the driver wishing to signal a turn by moving the directional signal lever, (up or down) May cause the front marker/turn lights and rear turn lights to flash in a manner similar to hazard warning, rather than flashing on the desired side only.
The risk
The driver May not be able to clearly signal their intentions to turn, change travel lanes, or potentially warn others of an impaired vehicle operating condition increasing the risk of a crash.
The fix
Dealers will replace the suspect flasher modules with a new flasher module designed with sealed relays and more durable contact material inside of the relays free of charge. The recall began on August 4, 2005. Isuzu began mailing owner letters on August 4, 2005. Owners May contact Chevrolet at 1-800-630-2438, GMC at 1-866-996-9463, Isuzu at 1-800-255-6727, Buick at 1-866-608-8080, and Oldsmobile at 1-800-630-6537.
Recall details
| NHTSA campaign | 05V-198 (05V198000) |
|---|---|
| Manufacturer number | 05044 |
| Manufacturer | General Motors, LLC |
| Component | Exterior lighting › Turn signal |
| Report date | May 5, 2005 |
| Owners notified | August 4, 2005 |
| Vehicles affected | 286,478 |
| Initiated by | NHTSA investigation |
Vehicles covered
Owner complaints about the lights
- 2004 Buick Rainier headlight problems 22
- 2003 Chevrolet Trailblazer headlight problems 78
- 2004 Chevrolet Trailblazer headlight problems 104
- 2003 GMC Envoy headlight problems 26
- 2004 GMC Envoy headlight problems 40
- 2003 Isuzu Ascender headlight problems 7
- 2004 Isuzu Ascender headlight problems 6
- 2003 Oldsmobile Bravada headlight problems 1
- 2004 Oldsmobile Bravada headlight problems 2
Frequently asked questions
Is the recall 05V-198 repair free?
Yes. Buick dealers will fix the problem at no cost: Dealers will replace the suspect flasher modules with a new flasher module designed with sealed relays and more durable contact material inside of the relays free of charge. The recall began on August 4, 2005.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 286,478 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.