buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

A/T - Delayed Forward Engagement, Slips on Takeoff > < All Technical Service Bulletins for Torque Converter Clutch:|8674403
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FIGURE 1 - TRANSAXLE IDENTIFICATION

Refer to Figure 1 for transaxle identification information.
NOTE:

A 1986 THM 440-T4 transaxle built before March 10, 1986 (Julian Date 069) may exhibit a torque converter clutch apply shudder at 45-55
mph.

The shudder condition may be caused by the damper plate not fully seating.

If the TCC apply shudder condition is exhibited, and all diagnostic procedures have been performed, replace the torque converter with a service
converter as indicated below.

MODEL

TORQUE CONVERTER PART NUMBER

4CW, 5CM, 5CN, 5CP, 5CW, 5HA, 5HJ, 5HT,

8656920

6CFH, 6CMH, 6CNH, 6HBH, 6HJH

4BC, 5BA, 5BC, 5BN, 5BR, 6BDH, 6BLH,

8656921

6BMH, 6BTH, 6BVH, 6BZH

6BBH

8656922

5BS, 5BU,

6BHH

8656923

5BX, 6BAH, 6BCH, 6BSH

8656924

A/T - Delayed Forward Engagement, Slips on Takeoff > < All Technical Service Bulletins for Torque Converter Clutch:|8674403