Chevrolet Silverado / GMC Sierra. Service manual — part 2054

Fig. 88: Camshaft Retainer & Bolts
Courtesy of GENERAL MOTORS CORP.

5. Install the camshaft retainer (203) and bolts (204). Install the retainer with the sealing

gasket facing the engine block.

IMPORTANT: The gasket surface on the engine block should be clean and

free of dirt and/or debris.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 89: Identifying Camshaft Retainer Bolts
Courtesy of GENERAL MOTORS CORP.

6. Tighten the camshaft retainer bolts.

Tighten:

Tighten the first design hex head bolts (3) to 25 N.m (18 lb ft).

Tighten the second design TORX® head bolts (4) to 15 N.m (11 lb ft).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 90: View Of Compressed Tensioner
Courtesy of GENERAL MOTORS CORP.

7. Compress the timing chain tensioner guide and install the EN 46330 . See Special Tools .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 91: Identifying Alignment Hole & Locating Pin
Courtesy of GENERAL MOTORS CORP.

8. Identify the alignment hole (1) in the rear face of the CMP actuator and the locating pin (2)

on the front face of the camshaft.

IMPORTANT:

Properly locate the CMP actuator onto the locating pin of
the camshaft.

The sprocket teeth and timing chain teeth must mesh.

The camshaft and the crankshaft sprocket alignment
mark MUST be aligned properly.

Do not use the CMP solenoid valve again. Install a NEW
valve during assembly.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado