Antitheft - Pass Key Theft Deterrent System Diagnosis: Overview

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Number: 89-232-8A

Section: 8A

Date: August 1989

Corporate Bulletin No.: 938135


Subject:
THEFT DETERRENT SYSTEM PASS KEY DIAGNOSIS


Model and Year:
1989 F CARS


TO:
ALL CHEVROLET DEALERS

The diagnostic text for the Theft Deterrent System: Pass Key has been revised on the following pages in the 1989 Chevrolet F-car Service Manual. Please update your manual.

Pages 8A-133-0 through 8A-133-6

Diagnostic Aid

An analysis of field service activities has shown that,the Pass Key Decoder Module is usually not the cause of customer concerns relative to Pass Key system performance. Should a comment be made, components more likely to be responsible for the conditon are (listed in descending order): lock cylinder and steering column wiring, igniton keys, wiring and the starter enable relay.