Chevrolet Silverado / GMC Sierra. Service manual — part 588

9. Install the oil pump gear cover to the oil pump assembly.

10. Install the oil pump gear cover bolts.

Tighten: Tighten the oil pump gear cover bolts to 21 N.m (15 lb ft).

ENGINE FRONT COVER CLEANING AND INSPECTION

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Fig. 39: View Of Engine Front Cover O-Ring
Courtesy of GENERAL MOTORS CORP.

1. Remove the O-ring (1) from the engine front cover.

2. Remove the oil pressure relief valve from the engine front cover.

3. Clean the engine front cover.

4. Clean the engine front cover mating surfaces.

5. Inspect the engine front cover mating surfaces for damage.

6. Inspect the engine front cover O-ring sealing surface for damage.

7. Inspect the crankshaft front oil seal bore for damage.

8. Replace the engine front cover if any damage is found.

2008 Chevrolet Silverado 1500

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

Fig. 40: View Of Pressure Relief Valve O-Ring
Courtesy of GENERAL MOTORS CORP.

9. Install the oil pressure relief valve with a new O-ring.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Tighten: Tighten the oil pressure relief valve to 39 N.m (29 lb ft).

LOWER OIL PAN CLEANING AND INSPECTION

Fig. 41: View Of Oil Level Sensor, Clip, Bolt & Oil Pan Mating Surface
Courtesy of GENERAL MOTORS CORP.

1. Remove the oil level sensor (1) and retaining clip (3).

2. Clean the lower oil pan (4). Remove any sludge or other deposits.

3. Clean the lower oil pan mating surface.

4. Inspect the lower oil pan (4) for dents or distortion.

2008 Chevrolet Silverado 1500

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