Century Estate Wagon V6-231 3.8L (1985)
Shift Modulator: All Technical Service Bulletins
IC. Intermittent Harsh Part Throttle 3-2 Shift
1985-1/2 - All models EXCEPT with 2.8L or 3.0L engines
1986 - All models EXCEPT 2.8L or 3.0L engines with transaxles built prior to July 21, 1986 (Julian Date 202)
Service Procedure:
An intermittent harsh 3-2 shift may be caused by a broken 3-2 line control retainer (435) (refer to Figure 4). Remove the transaxle side cover to access
the 3-2 line control valve and, if necessary, replace a broken retainer with the part listed below. Also ensure the 3-2 line control valve moves freely in its
bore.
Service Parts Information:
Part Number
Description
8658678
Retainer, 3-2 Line Control
Parts are currently available from GMSPO.
Figure 4
