INFO. ON OBTAINING SPEEDOMETER DRAC MODULES FROM AC-DELCO

SUBJECT: INFORMATION ON OBTAINING SPEEDOMETER DRAC MODULES FROM AC-DELCO SERVICE CENTERS

MODELS: 1990-93 C5H/C6H/C7H TOPKICK/KODIAK

Speedometer DRAC modules will no longer be available through GMSPO. All DRAC modules must be custom programmed depending on tire size, axle ratio, and engine RPM. DRAC part numbers 25072873 (1990 C5H, C6H, C7H), and 16149365 (1991-93 C5H, C6H, C7H) listed in the current Topkick/Kodiak parts book are NOT pre-programmed and will not operate properly if installed as is. Because necessary programming is involved, all modules are available from your DELCO Authorized Service Centers (Refer to Truck bulletin 90-8C-10, Corp #968301R dated October 1989).

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.