Chevrolet Silverado / GMC Sierra. Manual — part 606

7. While holding the secondary oil pump shaft with a hex driver, install the oil pump driven

gear nut.

Tighten: Tighten the oil pump driven gear nut to 100 N.m (74 lb ft).

OIL PUMP SUCTION PIPE AND SCREEN ASSEMBLY INSTALLATION

Fig. 103: View Of Oil Pump Pipe, Screen Assembly & Gasket
Courtesy of GENERAL MOTORS CORP.

"L" present, the nut and shaft have left hand threads. Service
the nut accordingly.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

1. Install the oil pump pipe and screen gasket.

2. Install the oil pump pipe and screen.

3. Install the oil pump pipe and screen assembly bolts and nuts.

Tighten:

Tighten the oil pump pipe and screen assembly bolts to 25 N.m (18 lb ft).

Tighten the oil pump pipe and screen assembly nuts to 25 N.m (18 lb ft).

ENGINE FRONT COVER INSTALLATION

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 104: View Of Pressure Relief Valve O-Ring
Courtesy of GENERAL MOTORS CORP.

1. Install the relief valve O-ring to the engine front cover.

2. Lubricate the O-ring with engine oil.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 105: Determining Sealant Bead Dimensions
Courtesy of GENERAL MOTORS CORP.

3. Apply a 2-3 mm wide and 0.5-1.5 mm high bead of GM P/N 12378521 (Canadian P/N

88901148) sealant to the mating surfaces of the engine front cover.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado