Engine Controls - Revised Chart C-6B, Diverter Valve
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Number: 89-322-6E
Section: 6E
Date: October 1990
Corporate Bulletin No.: 016537
Subject: DRIVEABILITY AND EMISSIONS ADDING SERVICE DIAGNOSTICS
Model and Year: 1989 CAPRICE WITH 5.0L (VIN CODE E) AND 5.7L (VIN CODE 7) ENGINES
TO: ALL CHEVROLET DEALERS
Some 1989 5.0L (VIN E) and 5.7L (VIN 7) "B" cars were built with an Electric Divert Valve (EDV) type AIR system.
The information in this bulletin should be added to the end of Section "6E2-C6" in the DRIVEABILITY AND EMISSIONS section of the 1989 "B" Carline Service Manual.