Cutlass Ciera FWD L4-151 2.5L (1982)
have torn loose. This material may be sticking the torque converter clutch apply valve and/or plugging the converter release orifice in the
control valve body spacer plate. If this is found, disassemble the auxiliary valve body and thoroughly clean. Also, be sure to remove any
gasket particles in the valve body spacer plate converter release orifice hole and replace the auxiliary valve body cover gasket, part no.
8653947.
X
5. Check the valves in the auxiliary valve body for freeness.
They must move in and out of their bore without sticking.
FIGURE 2 - THM 125/125-C TRANSMISSION I.D. NAMEPLATE YPSILANTI, MICHIGAN
FIGURE 3 - THM 125/125-C TRANSMISSION I.D. NAMEPLATE WINDSOR, CANADA
TCC APPLY
TCC CROWD
SHUDDER
SHUDDER
X
6. For gas engine/transaxles, the auxiliary valve body
converter clutch control regulator spring may be weak and require replacement with the new spring, part no. 8637888. The new spring has a stronger
load, and went into production on February 20, 1984 for U.S. built and March 5, 1984 (Julian Date 065) for Canada built THM 125C transaxles. Refer
to Chart 1 for serial number breakpoints. For explanations of nameplates, refer to Fig. 2 (U.S.) and Fig. 3 (Canada).
X
X
7. Inspect the pump shaft-to-valve body seal for cuts, damage,
or distortion.
X
X
8. A new governor pressure switch went into production
