Chevrolet Silverado / GMC Sierra. Service manual — part 954

Fig. 383: Output Shaft Bushing Inspection Areas - 4WD
Courtesy of GENERAL MOTORS CORP.

1. Inspect the output shaft bushing (2) for wear or damage.

2. Measure the inside diameter (ID) of the bushing (2) at dimension A.

3. Replace the bushing If the ID of the bushing exceeds specifications.

Specification: The bushing maximum ID is 20.07 mm (0.794 in).

2008 Chevrolet Silverado 1500

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

Silverado

4. Measure the outside diameter (OD) of the bearing surface at dimension B.

5. Replace the output shaft if the OD of the bearing surface is less than specifications.

Specification: The bearing surface minimum OD is 44.978 mm (1.77 in).

OUTPUT SHAFT BUSHING REPLACEMENT

Tools Required

J 43791 Output/Turbine Shaft Bushing Installer. See Special Tools.

J 44526 Output/Turbine Shaft Bushing Remover. See Special Tools.

Removal Procedure

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 384: Using J Tools To Remove Output Shaft Bushing
Courtesy of GENERAL MOTORS CORP.

1. Install J 44526-2 bolt (8) and J 44526-1 extractor (7) into the bushing (9).

2. Install J 44526-2 bolt (8) into J 44526-1 extractor (7).

3. Install the washer (6) and nut (5) onto J 44526-2 bolt (8).

4. Hold the top of J 44526-2 bolt (8) with a wrench and tighten the nut (5) until J 44526-1

extractor (7) engages the bushing (9).

2008 Chevrolet Silverado 1500

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

Silverado

5. Install the bearing (3), washer (2), and nut (1) onto J 44526-2 bolt (8).

6. Install J 44526-3 protector (4) onto J 44526-2 bolt (8).

7. Hold the top of J 44526-2 bolt (8) with a wrench and tighten the nut (1) until the bushing is

dislodged.

8. Remove the J tools.

9. Remove the bushing from J 44526 . See Special Tools.

Installation Procedure

Fig. 385: Installing Output Shaft Bushing

2008 Chevrolet Silverado 1500

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

Silverado