Chevrolet Silverado / GMC Sierra. Service manual - part 503

Fig. 315: View Of Oil Pump Driven Gear & Nut
Courtesy of GENERAL MOTORS CORP.

7. Install the oil pump driven gear.

2008 Chevrolet Silverado 1500

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

Fig. 316: Removing/Installing Secondary Oil Pump Driven Gear Nut While Holding
Oil Pump Shaft
Courtesy of GENERAL MOTORS CORP.

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

gear nut.

Tighten: Tighten the nut to 100 N.m (74 lb ft).

2008 Chevrolet Silverado 1500

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

Fig. 317: View Of Oil Pump Screen, Bolts, Nuts & Gasket
Courtesy of GENERAL MOTORS CORP.

9. Install a NEW oil pump screen gasket to the oil pump.

10. Install the oil pump screen.

11. Install the oil pump screen bolts and nuts.

Tighten: Tighten the bolts/nuts to 25 N.m (18 lb ft).

12. Install the engine front cover. Refer to Engine Front Cover Replacement.

13. If the vehicle is a 2WD, install the flywheel housing. Refer to Engine Flywheel

2008 Chevrolet Silverado 1500

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

Replacement.

14. Install the upper oil pan. Refer to Upper Oil Pan Replacement.

OIL FILTER ADAPTER AND OIL COOLER ASSEMBLY REPLACEMENT

Removal Procedure

Fig. 318: View Of Charge Air Inlet Pipe
Courtesy of GENERAL MOTORS CORP.

1. Drain the engine coolant and the engine block. Refer to Cooling System Draining and

Filling (Vac-N-Fill) or Cooling System Draining and Filling (Static Fill) .

2. Remove the charge air inlet pipe. Refer to Charge Air Cooler Inlet Pipe Replacement .

3. Remove the cooling fan shroud bracket bolts (1).

4. Remove the cooling fan shroud bracket (2).

2008 Chevrolet Silverado 1500

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