Chevrolet Silverado / GMC Sierra. Service manual — part 1142

Fig. 436: View Of Stator Shaft Oil Seal Rings
Courtesy of GENERAL MOTORS CORP.

11. Remove the stator shaft oil seal rings (230).

OIL PUMP STATOR SHAFT BUSHING REPLACEMENT

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

Special Tools

J 7004-A Universal Remover. See Special Tools.

J 8092 Universal Driver Handle - 3/4 in - 10

J 21465-01 Bushing Service Set. See Special Tools.

J 25019-14 Bushing Installer. See Special Tools.

J 34196-B Transmission Bushing Service Set. See Special Tools.

Removal Procedure

Fig. 437: Locating Pump Cover, Check Valve Retainer, Ball Assemblies & Cup
Plugs
Courtesy of GENERAL MOTORS CORP.

1. Inspect the pump cover, all check valve retainer and ball assemblies (237), cup plugs (235,

236) and orificed cup plugs (238, 240).

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

Fig. 438: View Of Pump Cover
Courtesy of GENERAL MOTORS CORP.

2. Inspect the pump cover for the following conditions:

Worn or damaged bushings

Foreign material or debris

Porosity

Scored or irregular mating faces

Cross channel leaks

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

Fig. 439: Identifying Special Tools J 21465-15, J 7004-A & Starter Shaft Front
Bushing
Courtesy of GENERAL MOTORS CORP.

3. Using the J 21465-15 (1) with the J 7004-A (2), remove the stator shaft front bushing

(234). See Special Tools.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado