Tools Required

1. Install the 1st/2nd and the 3rd/4th shift shaft bushings. Use the J 36190 , the J 39439-4 , and the J 39439-3 .



2. Install the mainshaft bearing race, using the J 8092 and the J 39435 .



3. Install the countershaft bearing race, using the J 8092 and the J 39435 .



4. Install the dowel pins.



5. Apply sealant GM P/N 12346004, (Canadian P/N 10953480) or equivalent to the threads of the backup switch.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

6. Install the backup switch.

Tighten
Tighten the switch to 27 N·m (20 lb ft).




7. Apply sealant GM P/N 12346004, (Canadian P/N 10953480) or equivalent to the transmission case fill plug threads (1) or (2).



8. Install the transmission case fill plug.

Tighten
Tighten the oil fill plug to 18 N·m (13 lb ft).

9. Install the temperature switch (1) (M12 only).

Tighten
Tighten the switch to 41 N·m (30 lb ft).





Notice: The H-pattern on the guide plate must face the extension housing. If the guide plate is installed incorrectly, then damage will occur.

10. Install the guide plate and the guide plate bolts.

Tighten
Tighten the bolts to 22 N·m (16 Ib ft).

Tools Required

1. Install the dowel pins.



2. Install the 1st/2nd, 3rd/4th speed shift shaft bushing, using the J 39439-1 .



3. Install the reverse rail bushing, using the J 39439-1 .



4. Install the input shaft seal, using the J 39433 .
5. Install the input shaft seal and the upper seal on the other side of the adapter plate, using the J 39433 .



6. Install adapter plate plug.



7. Install countershaft bearing shim and bearing race.



8. Install input shaft bearing shim and bearing race.