CUSTOM CRUISE III DIAGNOSIS USE DIGITAL MULTIMETER

When trouble shooting the new Custom Cruise III Electronic Cruise Control System, follow the system diagnosis instructions as published in UPC 9 of the Chevrolet Service Manual or by AC Spark Plug Division.

If voltage and resistance checks are made, a digital multimeter should be used. Do not use a test light. The high current draw of the light may damage the internal electronic components.

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.