For 1990-2009 cars

# CHIME/HEADLIGHT SWITCH OFF TWILIGHT SENTINEL WIRING

ON VEHICLES EQUIPPED WITH T82 OPTION (TWILIGHT SENTINEL) A CONDITION MAY OCCUR WHERE THE HEADLAMP "ON" CHIME MAY SOUND EVEN THOUGH HEADLAMP SWITCH IS IN THE "OFF" POSITION. THIS CAN BE CAUSED BY THE INCORRECT HOOK-UP OF THE CHIME ASSEMBLE PIGTAIL. THE PIGTAIL SHOULD BE CONNECTED TO THE TWILIGHT SENTINEL HARNESS, SEE ILLUSTRATION FOR CORRECT HOOK-UP. (ONE ILLUSTRATION)

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.