Caprice V6-229 3.8L VIN 9 2-bbl (1983)
EGR Valve: Technical Service Bulletins
Backpressure EGR Valves - Identifying Features
Number:
83-I-46
Section:
VIt
Date:
March, 1983
Subject:
NEW IDENTIFICATION FEATURE FOR BACKPRESSURE EGR VALVES - 1983 3.8L V6 (VIN CODE A) CALIFORNIA ONLY
ENGINES
TO:
ALL CHEVROLET DEALERS
New EGR Valve
Internal revisions have been made to backpressure EGR valves used on this engine. It is no longer possible to identify a positive or
negative type valve by visual inspection of the diaphragm plate, as has been done in the past. The new EGR valve has the letter "N" (for
negative backpressure), or "P" (for positive backpressure), on the line below the model identification number, as shown. The present shop
manual service procedure has not been changed.
