Chevrolet Silverado / GMC Sierra. Service manual — part 897

Fig. 194: Piston Return Spring Assemblies
Courtesy of GENERAL MOTORS CORP.

9. Remove 3 piston return spring assemblies (1) from the 3rd, 5th, and reverse spring plate (2).

3-5-REVERSE CLUTCH PISTON REMOVAL

IMPORTANT: The piston return spring assemblies snap off.

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 195: Locating 3rd, 5th And Reverse Clutch Annulus Holes
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: The preferred method of dislodging the 3rd, 5th, and reverse

clutch piston is with compressed air. Use a 9.5 mm (3/8 in)
rubber hose on the air connection to reach into the 3rd, 5th,
and reverse clutch annulus port. When shooting air into the
annulus port, ensure that the rubber hose covers both of the
3rd, 5th, and reverse clutch annulus port holes. If
compressed air is not available, remove the 3rd, 5th, and

2008 Chevrolet Silverado 1500

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

Silverado

1. Position the air hose so that the hose covers both 3rd, 5th, and reverse clutch annulus holes

(1).

Fig. 196: View Of 3rd, 5th, And Reverse Clutch Piston Assembly
Courtesy of GENERAL MOTORS CORP.

2. Shoot air into the 3rd, 5th, and reverse clutch annulus port until the 3rd, 5th, and reverse

reverse clutch piston assembly using pliers.

2008 Chevrolet Silverado 1500

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

Silverado

clutch piston assembly (1) is dislodged.

3. Remove the 3rd, 5th, and reverse clutch piston assembly (1).

TORQUE CONVERTER HOUSING FROM PUMP ASSEMBLY DISASSEMBLE

Fig. 197: View Of Converter Housing/Oil Pump Cover Module And Oil Seal
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

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

Silverado