For 1990-2009 cars

# RADIO NOISE IN SPEAKER WHEN USING CELLULAR PHONE

#### MODELS AFFECTED: 1987-1988 DE VILLES AND FLEETWOODS

Some 1987-1988 DeVilles and Fleetwoods, built prior to 1988 VIN Breakpoint 248670, equipped with the Bose radio sound system and the Cadillac cellular telephone may experience a loud "pop" over the Bose speakers when turning on the cellular telephone or whenever the audio switches from the radio to the telephone and back again.

To eliminate this "pop", a capacitor has been added to the radio mute module.

To repair this condition, check the service part number of the radio mute module (printed on a sticker located on the housing). If the number is 16055196, replace the module with service part number 16120736.

For warranty purposes, use Labor Operation R5115 at .3 hour

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.