Chevrolet Silverado / GMC Sierra. Service manual — part 991

Fig. 503: View Of Dial Indicator Set On Transmission Case
Courtesy of GENERAL MOTORS CORP.

4. Position the transmission case so that the front is facing up.

5. Assemble the following tools and install them onto the torque converter housing as shown.

J 5959-3 extension (1)

J 5959-1 dial indicator (2)

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

J 5959-2 base (3)

J 5959-7 clamp (4)

6. Zero the dial indicator (2).

7. Lift the rear of the 1-2-3-4, 4-5-6 clutch housing with a screwdriver through the power take-

off (PTO) hole in the transmission case.

8. Note the end play measured on the dial indicator.

Specification: The transmission end play must be 0.279-1.549 mm (0.011-0.061 in).

9. If the end play is not within the specification, a different selective spacer must be installed.

10. Remove the special tools from the transmission.

11. Remove the retaining ring and the ball bearing assembly.

12. Repeat the measurement and calculation to determine the correct selective spacer.

TORQUE CONVERTER ASSEMBLY INSTALLATION

Tools Required

J 46409 Torque Converter Lifting Handles. See Special Tools.

J 21366 Torque Converter Retaining Strap

Installation

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 504: Installing J 46409 Into Torque Converter Lugs
Courtesy of GENERAL MOTORS CORP.

CAUTION: The torque converter dry weight is approximately 29 kg

(63 lb). To help avoid personal injury and/or property
damage:

Use caution when installing, removing, or moving the
torque converter.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

1. If not installed, install J 46409 , positioned 180 degrees apart, into 2 threaded bosses on the

torque converter (1). See Special Tools.

2. Raise the torque converter (1) over the torque converter housing.

3. Lower the torque converter (1) over the turbine shaft and the stator shaft and into the oil

pump assembly.

4. Make sure the torque converter is seated in the oil pump assembly.

5. Remove the J 46409 . See Special Tools.

Get help when lifting the torque converter.
Assistance from a hoist or another person is
required.

Make sure J 46409 T-handles are installed securely
and that any lifting equipment used can properly
support the torque converter.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado