Lumina L4-151 2.5L (1991)
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 8), also install the 3-2 control valve spring
package described in Section II of this bulletin.
