Chevrolet Silverado / GMC Sierra. Service manual — part 2808

Removal Procedure

Fig. 8: Transfer Case Components
Courtesy of GENERAL MOTORS CORP.

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in

General Information.

2. Disconnect the speed sensor electrical connector (4).

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 9: View Of Vehicle Speed Sensor (VSS) & O-Ring Seal
Courtesy of GENERAL MOTORS CORP.

3. Remove the speed sensor and O-ring.

4. Discard the O-ring.

Installation Procedure

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 10: View Of Vehicle Speed Sensor (VSS) & O-Ring Seal
Courtesy of GENERAL MOTORS CORP.

1. Install the speed sensor with a NEW O-ring.

Tighten: Tighten the sensor to 17 N.m (13 lb ft).

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 11: Transfer Case Components
Courtesy of GENERAL MOTORS CORP.

2. Connect the speed sensor electrical connector (4).

3. Lower the vehicle.

FRONT OUTPUT SHAFT SEAL REPLACEMENT

Tools Required

J 8092 Driver Handle

J 43484 Output Shaft Seal Installer. See Special Tools.

Removal Procedure

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado