Service Parts Information:

Transaxle Model
Package Identification
Number Package Contents (Refer to Fig.1)

8646995 (1) Oil Pump Body Assembly Complete 6AAH, 6ACH, 6ADH,
(1) Release Cover Gasket 6AFH, 6AMH, 6ANH,
(1) Plug & Release Cover Pipe Asm. 6APH, 6ARH, 6ASH,
(1) Conduit Clip 6ATH, 6AWH, 6AYH,

5AM, 5AF

8646996 (1) Oil Pump Body Assembly Complete 6BAH, 6BBH, 6BCH,
(1) Release Cover Gasket 6BDH, 6BHH, 6BLH,
(1) Plug & Release Cover Pipe Asm. 6BMH, 6BSH, 6BTH,
(1) Conduit Clip 6BYH, 6BZH, 6CFH,
6CMH, 6CNH, 6HBH,
6HJH
5BR, 5BV, 5BW, 5CM

5CN, 5HJ, 5HA

Parts are currently available from GMSPO.

Service Manual Reference:

Refer to the HYDRA-MATIC 4T60 (ME9) Automatic Transaxle Unit Repair Table of Contents for appropriate service information.

Service Notes:

If the new pump body assembly has a "one terminal" 3rd clutch switch, remove it and replace with the "two terminal" 3rd clutch switch from the original pump body assembly.


When servicing a transaxle for the above described condition in designated high altitude areas (Figure 6), also install the 3-2 control valve spring package described in Section II of this bulletin.

Also ensure the 3-2 control valve and 1-2 servo control valve move freely in their bores.