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.
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.