Fleetwood V8-368 6.0L VIN 9 FI (1982)
Band Apply Servo: Customer Interest
A/T - Soft 1-2 and Harsh 2-3 Shifts
Bulletin No. T
84-73
File In Group
7
Number
103
Date
MAY '84
SUBJECT:
SOFT 1-2 AND HARSH 2-3 SHIFTS - THM 200C, 200-4R AND 325-4L
MODELS AFFECTED:
1979 SEVILLES 1980-1984 DEVILLES AND BROUGHAMS 1982-1984 ELDORADOS AND SEVILLES
1979 through 1984, Cadillacs equipped with a THM 200C, 200-4R or 325-4L transmission may exhibit soft 1-2 and harsh 2-3 upshifts. This condition
may be caused by a hydraulic leak in the seal areas of the intermediate servo outer piston. The affected Cadillac vehicles which may experience this
condition are as follows:
Year(s)
Vehicle(s)
Transmission/Model(s)
1979
Seville
THM 200C/AX
1980-1981
Deville and Brougham
THM 200C/AS
1981-1984
Deville and Brougham
THM 200-4R/AA, BY and OM
1982-1984
Eldorado and Seville
THM 325-4L/AJ, AL, AM and AE
FIGURE 1 - NEW RUBBER LIP SEALS
FIGURE 2 - PAST SCARF CUT TEFLON SEAL RINGS
Beginning in January, 1984, all models of THM 200C, 200-4R and 325-4L transmissions are being produced using a new intermediate servo outer piston
that has rubber lip seals in place of the past scarf cut Teflon ring seals (refer to illustrations). When servicing any of the above listed transmissions for a
soft 1-2 and harsh 2-3 upshifts condition, replace the scarf cut seals equipped intermediate servo outer piston with the appropriate new rubber lip seals
piston listed below:
Servo Piston Kit P/N's (Includes New Piston and Rubber Lip Seals)