Chevrolet Silverado / GMC Sierra. Service manual — part 589

5. Inspect the lower oil pan mating surface for damage.

6. Replace the lower oil pan (4) if any damage is found.

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

VALVE ROCKER ARM COVER CLEANING AND INSPECTION - LOWER

Fig. 42: Inspecting Lower Valve Rocker Arm Cover
Courtesy of GENERAL MOTORS CORP.

1. Remove the grommets.

2. Clean the lower valve rocker arm cover. Remove any sludge or other deposits.

3. Clean the lower valve rocker arm cover mating surfaces.

4. Inspect the lower valve rocker arm cover for cracks or other damage.

5. Inspect the lower valve rocker arm cover mating surfaces for damage.

6. Replace the lower valve rocker arm cover if any damage is found.

7. Inspect the grommets for damage.

8. Replace the grommets if any damage is found.

2008 Chevrolet Silverado 1500

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

9. Install the grommets.

VALVE ROCKER ARM COVER CLEANING AND INSPECTION - UPPER

Fig. 43: View Of PCV Cover, Diaphragm & Spring
Courtesy of GENERAL MOTORS CORP.

1. Remove the PCV cover screws.

2. Remove the PCV cover, diaphragm, and spring.

2008 Chevrolet Silverado 1500

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

Fig. 44: View Of Upper Valve Rocker Arm Cover Components
Courtesy of GENERAL MOTORS CORP.

3. Clean the upper valve rocker arm cover. Remove any sludge or other deposits.

4. Clean the upper valve rocker arm cover mating surface.

5. Inspect the upper valve rocker arm cover for cracks or other damage.

6. Inspect the upper valve rocker arm cover mating surfaces for damage.

7. Replace the upper valve rocker arm 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. 45: View Of PCV Cover, Diaphragm & Spring
Courtesy of GENERAL MOTORS CORP.

8. Inspect the PCV cover, diaphragm, and spring for damage.

9. Install the PCV spring.

10. Install the PCV diaphragm.

11. Install the PCV cover.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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