Fiero L4-151 2.5L (1985)
Clutch: All Technical Service Bulletins
A/T - New Clutches
Number
87-7-21
Date
5/87
NEW FORWARD CLUTCH ASSEMBLY AND
Subject:
NEW LO AND REVERSE CLUTCH ASSEMBLY
1985-87 6000, SUNBIRD, GRAND AM, AND FIERO EQUIPPED WITH THM 125C (MD9) TRANSMISSION
Figure 1 - THM 125/125C TRANSAXLE Identification Information
BULLETIN COVERS:
New forward clutch assembly, including: a new housing, new piston, new selective backing plates, and an additional wave plate for improved neutral to
drive shift feel..
New lo and reverse clutch housing and lo and reverse clutch pack assembly, including: a new housing, new piston, two wave plates, and selective
backing plates for improved neutral to reverse shift feel.
DATE OF CHANGE:
(Figure 1)
The new forward clutch assembly implemented July 3, 1986, Julian Date 184, and the new lo and reverse clutch assembly implemented July 8, 1986,
Julian Date 189, for all models of the THM 125/125C.
SERVICE ACTION:
1985 and/or 1986 Model Year:
The neutral to drive package can be used to service a 1985 or 1986 (before Julian Date 184) THM 125C transaxle exhibiting a harsh drive engagement
by replacing the forward clutch with the new forward clutch assembly.
The neutral to reverse package can be used to service a 1985 or 1986 (before Julian Date 189) THM 125C transaxle exhibiting a harsh reverse
engagement by replacing the lo and reverse clutch assembly with the new lo and reverse housing assembly, and new lo and reverse clutch pack assembly.