Chevrolet Silverado / GMC Sierra. Service manual — part 950

Fig. 370: Identifying Output Carrier Internal Gear
Courtesy of GENERAL MOTORS CORP.

1. Inspect the external splines of the output carrier internal gear (1).

2. Replace the gear if detectable notching has occurred.

OUTPUT CARRIER INSPECTION

Fig. 371: Measuring End Play Between Output Carrier And Thrust Washer
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

Clutch plate movement can cause notching on the
external splines if the output carrier internal gear.

Replace the output carrier internal gear if the
specifications are not met.

2008 Chevrolet Silverado 1500

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

Silverado

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

gear (3).

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

Specification: The maximum pinion end play is 1.010 mm (0.040 in).

Fig. 372: Checking Output Carrier Assembly Teeth For Wear
Courtesy of GENERAL MOTORS CORP.

3. Inspect the wear of each output carrier assembly tooth by placing a straight edge (3) against

the side of each carrier assembly tooth (2).

2008 Chevrolet Silverado 1500

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

Silverado

4. Observe the wear on the carrier assembly tooth at dimension A.

5. If detectable notching has occurred, replace the output planetary carrier assembly.

OUTPUT CARRIER BEARING RACE REPLACEMENT

Tools Required

J 44528 Output Carrier Bearing Race Remover. See Special Tools.

J 43797 Output Carrier Bearing Race Installer. See Special Tools.

Removal Procedure

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 373: Identifying Output Carrier Assembly & J 44528-1
Courtesy of GENERAL MOTORS CORP.

1. Position the output carrier assembly (2) on the work table so that the rear of the carrier is

facing up.

2. Install J 44528-1 remover (1) over the hub of the carrier and onto the bearing race (3).

3. Tighten the J 44528-1 remover screws (4) wrench tight.

2008 Chevrolet Silverado 1500

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

Silverado