Chevrolet Silverado / GMC Sierra. Service manual — part 1145

Fig. 447: Identifying Pump Cover Bolts
Courtesy of GENERAL MOTORS CORP.

1. Place the oil pump cover onto the oil pump body and put stator shaft through a hole in the

bench.

2. Install the pump cover bolts (233) finger tight only.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

Fig. 448: Identifying Pump Cover Bolts
Courtesy of GENERAL MOTORS CORP.

3. Install the J 21368 . See Special Tools.

4. Tighten the pump cover bolts (233).

Tighten: Tighten the bolts to 24 N.m (18 lb ft).

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

5. Remove the J 21368 . See Special Tools.

INPUT SPEED SENSOR INSTALLATION

Fig. 449: View Of Input Speed Sensor (ISS) Assembly
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

1. Inspect the input speed sensor (ISS) assembly (250) for the following conditions:

Cracked or damaged housing

Worn, broken or missing harness brackets; replace the ISS assembly if necessary

Damaged or worn wining or electrical connector

Loose, missing or damaged mounting bolt insert

Fig. 450: Identifying Input Speed Sensor (ISS) O-Ring
Courtesy of GENERAL MOTORS CORP.

2. Remove the ISS O-ring (249) and discard.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado