Chevrolet Silverado / GMC Sierra. Service manual — part 609

Fig. 114: View Of Fuel Injection Pump
Courtesy of GENERAL MOTORS CORP.

1. Lubricate the O-ring on the fuel injection pump adapter with engine oil.

2008 Chevrolet Silverado 1500

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

Fig. 115: Identifying Two Piece Cam Gear
Courtesy of GENERAL MOTORS CORP.

2. Use a suitable tool to unload the spring tension from the two piece cam gear. Apply pressure

towards the right side of the engine while installing the fuel injection pump.

3. Install the fuel injection pump and adapter assembly.

4. Install the fuel injection pump bolts.

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 fuel injection pump bolts to 25 N.m (18 lb ft).

VALVE LIFTER INSTALLATION

Fig. 116: View Of Valve Lifter, Guides, Retainers & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Install the valve lifter.

2. Install the valve lifter guides.

3. Install the valve lifter guide hold down bracket.

2008 Chevrolet Silverado 1500

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

4. Install the valve lifter guide hold down bracket bolt.

Tighten: Tighten the valve lifter guide hold down bracket bolt to 11 N.m (97 lb in).

CYLINDER HEAD GASKET SELECTION

Tools Required

J 7872 Dial Indicator Set

Selection

1. If a reciprocating component (crankshaft, connecting rod, piston, or bearings) has not been

replaced, install the same grade head gasket that was removed.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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