Chevrolet Silverado / GMC Sierra. Service manual — part 1163

2-4 SERVO DISASSEMBLE

Tools Required

J 22269-01 Accumulator and Servo Piston Remover. See Special Tools.

Disassemble

Fig. 512: Locating Servo Cushion Outer & Inner Spring With Retainer
Courtesy of GENERAL MOTORS CORP.

1. Use a J 22269-01 to compress the second apply piston assembly (17). 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

2. Remove the second apply piston retaining ring (14).

3. Remove the servo cushion spring retainer (15), the servo cushion outer spring (16) and the

servo cushion inner spring (105) (model dependent).

2-4 BAND SERVO PISTON PIN LENGTH CHECK

Tools Required

J 33037 2-4 Intermediate Band Apply Pin Gage. See Special Tools.

Check

Fig. 513: Locating Servo Cover Retaining Ring
Courtesy of GENERAL MOTORS CORP.

1. Install the band apply pin (13) and the J 33037 . See Special Tools.

2. Install the servo cover retaining ring (29) to secure the tool.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

Fig. 514: Identifying Gage Slot
Courtesy of GENERAL MOTORS CORP.

3. Apply 11 N.m (98 lb in) torque. If the white line appears in the gage slot (1), the pin length

is correct.

4. If a new pin is needed, refer to 2-4 Band Servo Piston Pin Selection in order to determine

the correct pin length.

2-4 SERVO ASSEMBLY INSTALLATION

Tools Required

J 22269-01 Accumulator and Servo Piston Remover. 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

J 29714-A Servo Cover Depressor. See Special Tools.

Installation

Fig. 515: View Of 4th Apply Piston, 2-4 Servo Cover, 2nd Apply Piston, & Servo
Piston Inner Housing
Courtesy of GENERAL MOTORS CORP.

1. Inspect the 4th apply piston (25), the 2-4 servo cover (28), the 2nd apply piston (17), and

the servo piston inner housing (20) for the following conditions:

Cracks

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado