CRYSTAL REPLACEMENT IN RADIO CONTROL HEADS TO REDUCE 2-WAY. GMC Truck GMC K Pickup

SUBJECT: CRYSTAL REPLACEMENT IN C/K TRUCK CONTROL HEADS TO REDUCE 2-WAY RADIO INTERFERENCE

MODELS AFFECTED: 1988 - 1993 C/K TRUCK CONTROL HEADS

REFERENCE RD92MAA07, PAGE 17.

INFORMATION: IF THE CUSTOMER COMMENTS THAT THE RADIO SYSTEM OF THE C/K TRUCK IS INTERFERING WITH THE 2-WAY RADIO (BUSINESS BAND), REPLACE Y1 WITH A NEW CRYSTAL (PART NUMBER 16195774).

THIS PROCEDURE SHOULD ONLY BE DONE AFTER IT HAS BEEN VERIFIED THAT THE TRUCK'S RADIO IS INTERFERING WITH THE CUSTOMER'S 2-WAY RADIO. THE NEW CRYSTAL ELIMINATES OR REDUCES INTERFERENCE IN THE 2-WAY RADIO IN MOST CASES, BUT MAY NOT WORK WITH ALL 2-WAY RADIO FREQUENCIES.

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.