Ciera V6-173 2.8L VIN W FI (1986)
Clutch: Customer Interest
A/T -THM 440-T4 Loss of Drive and/or Reverse
SUBJECT
1984-87 THM 440-T4 LOSS OF DRIVE AND/OR
NUMBER: 87-T-09
REVERSE
DATE:
December 15, 1986
MODELS/YEARS
1984-87 MODELS WITH 440-T4 TRANSAXLE
SECTION: 7A
Loss of drive and/or reverse on a 1984 to 1987 vehicle that has a THM 440-T4 transaxle with normal line pressures may be caused by the input sprag
clutch assembly.. This condition may be corrected by installing a new, wider input sprag clutch and related parts.
FIGURE 1
Date of Change:
April 1, 1986 (Julian Date 091), new input sprag clutch assembly used in later 1986 and all 1987 applications. This change is also on all Service
Replacement Transmission Assembly (SRTA) models effective May 1, 1986 (Julian Date 121). (Figure 1)
