Chevrolet Silverado / GMC Sierra. Manual - part 953
Fig. 380: View Of Low And Reverse Clutch Piston, Seal & Seal Ring
Courtesy of GENERAL MOTORS CORP.
6. Remove seal ring (1) and seal ring (2) from the low and reverse clutch piston (3).
LOW AND REVERSE CLUTCH HOUSING RETAINING RING REPLACEMENT
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 381: Low and Reverse Clutch Housing Retaining Ring
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: DO NOT replace the retaining ring in the low and reverse
clutch housing unless:
The retaining ring is damaged.
The low and reverse clutch housing is to be replaced.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
1. Position the low and reverse clutch housing (2) on the worktable so that the inside of the
cover is facing down.
2. Remove retaining ring (1).
3. Install a new retaining ring (1).
4. Make sure the retaining ring is seated.
TWO-WHEEL-DRIVE OUTPUT SHAFT BUSHING INSPECTION
Fig. 382: Inspection Areas On Output Shaft Bushing - 2WD
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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. Replace the bushing If
the ID of the bushing exceeds specification.
Specification: The bushing maximum ID is 20.070 mm (0.7940 in).
3. Measure the outside diameter (OD) of the bearing surface at dimension B. Replace the
output shaft If the OD of the bearing surface exceeds specification
Specification: The bearing minimum OD is 44.978 mm (1.7708 in)
FOUR-WHEEL-DRIVE OUTPUT SHAFT BUSHING INSPECTION
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado