C 20 3/4 Ton Pickup 2WD V8-379 6.2L DSL VIN C FI (1983)
Intake Manifold: Technical Service Bulletins
A/T - Harsh or Erratic Shift Transmission
Number:
83-I-112
Section:
VIIc
Date:
September, 1983
Subject:
HARSH OR ERRATIC SHIFT C/K MODEL WITH 6.2L DIESEL AND 700-R4 TRANSMISSION
TO:
ALL CHEVROLET DEALERS
Some models may experience harsh or erratic shifts that are equipped with the THM 700-R4 transmission and 6.2L diesel engine. This condition may be
due to a possible interference between the detent rod running underneath the intake manifold and #1-3 or #5-7 injection line clips.
The interference area may be difficult to notice and will require a small swivel mirror to view.
Line Clip Positioning
If there is an interference condition, refer to the illustration below for proper injection line clip positioning. Removal of the intake manifold to correct the
clip interference will be necessary to correct any interference that exists.
