6000 V6-173 2.8L VIN Z 2-bbl HP (1984)
Case: All Technical Service Bulletins
A/T - Harsh 1st-2nd Gear Shift
Number
87-7-48
Date
10/87
Subject:
HARSH 1-2 SHIFT
1984-87 6000 AND 1987 BONNEVILLE MODELS EQUIPPED WITH THM 440-T4 (ME9)
BULLETIN COVERS:
A harsh 1-2 shift condition on a THM 440-T4 transaxle may be caused by a blocked or partially drilled 2nd clutch feed passage in the case. This
condition may be repaired by following the Service Action information in this bulletin.
Figure 1 - Bottom Pan, Filter, Accumulator And Governor Cover Assembly
SERVICE ACTION:
Before removing the transaxle from the vehicle, inspect the 2nd clutch feed passage for blockage or a partially drilled condition.. To perform this
inspection, remove the following items (refer to Figure 1):
transaxle bottom pan (59), filter (58), accumulator cover (121) with governor pipes (124, 125) and governor pipe retainer (129), accumulator cover
spacer plate (120) and gaskets (119).