Chevrolet Silverado / GMC Sierra. Service manual — part 1157

Fig. 489: Using Air To Clean Accumulator Housing
Courtesy of GENERAL MOTORS CORP.

1. Blow air into the 1-2 accumulator housing (57) to remove the 1-2 accumulator piston (56).

2. Remove the 1-2 inner (104) and outer (54) accumulator springs.

1-2 ACCUMULATOR ASSEMBLE

IMPORTANT: Some models may not use an outer 1-2 accumulator spring

(54).

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

Fig. 490: Locating Accumulator Piston & Oil Seal Ring
Courtesy of GENERAL MOTORS CORP.

1. Inspect the 1-2 accumulator piston (56) for the following conditions:

Porosity

Cracks

Scoring

Nicks and Scratches

2. Install a 1-2 accumulator piston oil seal ring (55) on the 1-2 accumulator piston (56).

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

Fig. 491: Locating 1-2 Accumulator Housing Inspection Areas
Courtesy of GENERAL MOTORS CORP.

3. Inspect the 1-2 accumulator housing for the following conditions:

Porosity

Cracks

Scoring

Nicks and Scratches

Debris or blocked passages

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

Fig. 492: View Of 1-2 Accumulator Piston, Inner & Outer Accumulator Springs &
Housing
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Some models may not use an outer 1-2 accumulator spring

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado