Chevrolet Silverado / GMC Sierra. Service manual — part 2053

Fig. 84: View Of CMP Actuator & Timing Chain
Courtesy of GENERAL MOTORS CORP.

NOTE:

Do not turn the crankshaft assembly after the timing chain has
been removed in order to prevent damage to the piston
assemblies or the valves.

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

8. Remove the CMP actuator (235) and timing chain (208).

Fig. 85: Camshaft Retainer & Bolts
Courtesy of GENERAL MOTORS CORP.

9. Remove the camshaft retainer bolts (204) and retainer (203).

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. 86: View Of Camshaft
Courtesy of GENERAL MOTORS CORP.

10. Install the camshaft sprocket bolt into the camshaft front bolt hole.

11. Using the bolt as a handle, carefully rotate and remove the camshaft from the engine block.

12. Remove the bolt from the camshaft.

Installation Procedure

NOTE:

All camshaft journals are the same diameter, so care must be
used in removing or installing the camshaft to avoid damage to
the camshaft bearings.

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. 87: View Of Camshaft
Courtesy of GENERAL MOTORS CORP.

1. Lubricate the camshaft journals and the bearings with clean engine oil.

2. Install the camshaft sprocket bolt into the camshaft front bolt hole.

3. Using the bolt as a handle, carefully install the camshaft into the engine block.

4. Remove the bolt from the front of the camshaft.

NOTE:

All camshaft journals are the same diameter, so care must be
used in removing or installing the camshaft to avoid damage to
the camshaft bearings.

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