Chevrolet Silverado / GMC Sierra. Service manual — part 946

Fig. 356: Exploded View Of Input Carrier Assembly
Courtesy of GENERAL MOTORS CORP.

1. Remove the thrust washer (1) from the intermediate internal gear (4).

2. Remove the retaining ring (2) from the intermediate internal gear (4).

3. Separate the input carrier assembly (3) from the intermediate internal gear (4).

2008 Chevrolet Silverado 1500

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

Silverado

INPUT CARRIER ASSEMBLY INSPECTION

Fig. 357: Checking Input Carrier End Play With Feeler Gage
Courtesy of GENERAL MOTORS CORP.

1. Check the end play between the input carrier (1) and the thrust washer (2) at each pinion

gear (3).

2. Replace the input carrier assembly if the end play exceeds specifications.

Specification: Replace the input carrier assembly if the end play exceeds 1.01 mm (0.040
in).

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 358: Inspecting Inside Diameter Of Input Carrier Bushing
Courtesy of GENERAL MOTORS CORP.

3. Inspect the bushing for wear or damage.

4. Measure the ID of the bushing.

5. Replace the bushing if the ID exceeds specification.

Specification: The bushing maximum ID is 50.69 mm (1.9957 in).

INPUT CARRIER BUSHING INSPECTION AND REPLACEMENT

Tools Required

J 43781 Input Carrier Bushing Remover/Installer. See Special Tools.

J 8092 Universal Driver

Inspection and Replacement

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 359: View Of Input Carrier Assembly
Courtesy of GENERAL MOTORS CORP.

1. Position the input carrier assembly (3) on the press with the external splines facing up.

2. If the bushing will be removed without a press, install the short end of J 43781 (2) onto J

IMPORTANT: The preferred method for removing/installing the input

carrier bushing is to use J 43781 and a press. See Special
Tools. If a press is not available, use J 43781 and J 8092
universal driver. See Special Tools.

2008 Chevrolet Silverado 1500

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

Silverado