Chevrolet Silverado / GMC Sierra. Manual — part 1079

TRANSMISSION REPLACEMENT

Tools Required

J 21366 Converter Holding Strap. See Special Tools.

Removal Procedure

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection

and Connection (w/Single Battery) or Battery Negative Cable Disconnection and
Connection (w/Auxiliary Battery) or Battery Negative Cable Disconnection and
Connection (w/Dual Batteries) .

2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .

3. Remove the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or

Two-Piece Propeller Shaft Replacement .

4. Support the transmission with a transmission jack.

5. Remove the transmission crossmember. Refer to Transmission Support Crossmember

Replacement (2WD 2500 HD/3500) or Transmission Support Crossmember
Replacement (2WD 1500/2500) or Transmission Support Crossmember Replacement
(4WD 1500/2500) or Transmission Support Crossmember Replacement (4WD 2500
HD/3500) .

6. Remove the transmission mount. Refer to Transmission Mount Replacement (2WD) or

Transmission Mount Replacement (4WD).

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Support the transmission with a transmission jack.

1

Transmission Mount to Crossmember Nut (Qty: 2)

Tighten: 50 N.m (37 lb ft)

NOTE:

Refer to Fastener Notice .

2

Transmission Mount Bolt (Qty: 2)

Tighten: 50 N.m (37 lb ft)

3

Transmission Mount
Tip: Raise the transmission with the transmission jack just enough to remove the
transmission mount.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

7. Remove the catalytic converter pipe. Refer to Catalytic Converter Replacement (4.3L)

or Catalytic Converter Replacement (4.8L, 5.3L, 6.0L, 6.2L) or Catalytic Converter
Replacement (6.6L) .

8. If the vehicle is equipped with a transfer case, remove the front propeller shaft. Refer to

Front Propeller Shaft Replacement .

Fig. 206: Identifying Torque Converter Access Plug
Courtesy of GENERAL MOTORS CORP.

9. Remove the torque converter access plug.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado