C 30 1 Ton Pickup 2WD V8-350 5.7L VIN M 4-bbl (1983)
Valve Body: Customer Interest
A/T - Harsh 1st to 2nd Gear Upshift
Number:
84-179
Section:
7A (VIIc)
Date:
August, 1984
Subject:
HARSH 1-2 UPSHIFT
Model and Year: ALL 1983 AND 1984 THM 200-4R
TO:
ALL CHEVROLET DEALERS
CLUTCH APPLY OIL HOLE
Some 1983 and 1984 THM 200-4R model transmissions may experience a harsh 1-2 upshift. This harsh 1-2 upshift may be caused by
the second clutch check ball peening the second clutch apply oil hole on the spacer plate. For location of the second clutch, apply oil
hole on the spacer plate as shown in the illustration. To correct this condition, replace the valve body to spacer plate gasket, spacer
plate to case gasket, and spacer plate; refer to your parts list for part numbers.
