Wiper/Washer System - Revised Diagnosis: Overview

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Number: 90-2O9-8A

Section: 8A

Date: APRIL 1990

Corporate Bulletin: 938124


Subject:
WIPER/WASHER DIAGNOSIS SYSTEM


Model and Year:
1987-90 L CAR


TO: ALL CHEVROLET DEALERS

THIS BULLETIN CANCELS AND SUPERSEDES CHEVROLET DEALER SERVICE BULLETIN 89-237-8E. THE INFORMATION HAS BEEN UPDATED, AS WELL AS THE 1987-88 AND 1990 MODEL YEARS HAVE BEEN ADDED. ALL COPIES OF 89-237-8E SHOULD BE DISCARDED.

Information has been developed to provide complete windshield wiper diagnosis in' Section 8A of the 1987-90 L Car Service Manual on pages 8A-90 and 8A-91. Note that these pages affect both Standard and Pulse Windshield Wiper Systems.

The Wiper/Washer schematics and diagnostics in Section 8A-90 and 8A-91 for both the standard and pulse wiper systems contain inaccurate information. Two wires were transposed on the schematics. Please use the following schematic and diagnostic pages when diagnosing an electrical concern with the wiper/washer systems in the 1987, 1988, 1989 and 1990 Chevrolet L cars.