Chevrolet Silverado / GMC Sierra. Service manual — part 2003

Fig. 368: Tightening CMP Actuator Solenoid Valve
Courtesy of GENERAL MOTORS CORP.

8. Tighten the CMP actuator solenoid valve.

Tighten:

1. Tighten the valve a first pass to 65 N.m (48 lb ft).

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

2. Tighten the valve a final pass and additional 90 degrees using J 45059 .

9. Install the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector

Replacement (LY6, L76 and L92) or Oil Pump, Screen, and Crankshaft Oil
Deflector Replacement (LH6, LMG, LY2 and LY5) .

CRANKSHAFT REAR OIL SEAL REPLACEMENT

Tools Required

J 41479 Crankshaft Rear Oil Seal Installer. See Special Tools .

Removal Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 369: Crankshaft Rear Oil Seal & Housing
Courtesy of GENERAL MOTORS CORP.

1. Remove the automatic transmission flexplate, refer to Automatic Transmission Flex Plate

Replacement .

2. Remove and discard the crankshaft rear oil seal (141).

Installation Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 370: Identifying Oil Seal
Courtesy of GENERAL MOTORS CORP.

1. Inspect the seal and identify the part number markings for proper orientation.

IMPORTANT: For proper orientation, note the installation direction of the

oil seal. The oil seal is a reverse-lip design. The part number
is applied to the outside face of the seal, as shown.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado