Chevrolet Silverado / GMC Sierra. Service manual — part 525

Fig. 399: View Of Oil Filter
Courtesy of GENERAL MOTORS CORP.

1. Apply clean engine oil to the NEW oil filter gasket.

2. Install the NEW oil filter.

Tighten: Tighten the filter after contact plus 1 to 11/4 turn.

2008 Chevrolet Silverado 1500

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

Fig. 400: View Of Oil Drain Plug
Courtesy of GENERAL MOTORS CORP.

3. Tighten the oil pan drain plug.

Tighten: Tighten the plug to 84 N.m (62 lb ft).

4. Remove the oil drain pan from under the vehicle.

5. Lower the vehicle.

6. Fill the engine with new engine oil. Refer to Approximate Fluid Capacities and Fluid

and Lubricant Recommendations .

7. Start the engine.

8. Inspect for oil leaks after engine start up.

9. Turn off the engine and allow the oil a few minutes to drain back into the oil pan.

2008 Chevrolet Silverado 1500

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

10. Remove the oil level indicator from the oil level indicator tube.

11. Clean off the indicator end of the oil level indicator with a clean paper towel or cloth.

12. Install the oil level indicator into the oil level indicator tube until the oil level indicator

handle contacts the top of the oil level indicator tube.

13. Again, remove the oil level indicator from the oil level indicator tube keeping the tip of the

oil level indicator down.

14. Check the level of the engine oil on the oil level indicator.

15. If necessary, adjust the oil level be adding or draining oil.

16. Check for oil leaks.

OIL PUMP REMOVAL

2008 Chevrolet Silverado 1500

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

Fig. 401: Removing/Installing Secondary Oil Pump Driven Gear Nut While Holding
Oil Pump Shaft
Courtesy of GENERAL MOTORS CORP.

NOTE:

Do not use an impact driver to remove or install the oil pump
driven gear nut. Use of an impact driver may shear the oil pump
drive gear pin in the crankshaft.

IMPORTANT: Look for an "L" on the end of the oil pump shaft. If there is an

2008 Chevrolet Silverado 1500

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