IMPROPER METRIC CONVERSION CHECK CKT#911 B/4 INST. NEW

VEHICLES AFFECTED: 1983 CADILLAC ELDORADOS AND SEVILLES WITH DFI AND DIGITAL INSTRUMENT CLUSTER EARLY 1983 ELDORADOS AND SEVILLES WITH DFI AND DIGITAL INSTRUMENT CLUSTER MAY NOT CONVERT THE ELECTRONIC CLIMATE CONTROL ECC HEAD AND FUEL DATA PANEL TO METRIC UNITS WHEN "METRIC" IS SELECTED ON THE DIGITAL CLUSTER SWITCH. THIS CONDITION IS DUE TO THE DIGITAL CLUSTER'S INABILITY TO PROVIDE AN ADEQUATE GROUND SIGNAL ON CIRCUIT #911 FROM THE ECM. A REVISED DIGITAL CLUSTER IS NOW IN PRODUCTION (BEGINNING WITH CLUSTER DATE CODE 252) AND ALL EXCHANGE TUBE AND CIRCUIT BOARDS FROM THE A/C DELCO SERVICE CENTER HAVE BEEN MODIFIED TO CORRECT THIS CONDITION. SINCE THIS SAME CONDITION WILL EXIST IF CIRCUIT #911 IS OPEN, THE WIRE SHOULD FIRST BE CHECKED FOR CONTINUITY BEFORE INSTALLING A REMANUFACTURED TUBE AND CIRCUIT BOARD. IF THE ECC HEAD AND FUEL DATA PANEL CAN BE CONVERTED TO METRIC BY GROUNDING CIRCUIT #911 AT THE DIGITAL CLUSTER CONNECTOR PIN H, THEN THE HARNESS CAN BE ELIMINATED AS THE CAUSE OF THE CONDITION.

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.