Chevrolet Silverado / GMC Sierra. Service manual — part 2037

Fig. 26: View Of CMP Actuator Alignment Mark & Crankshaft Sprocket
Alignment Mark
Courtesy of GENERAL MOTORS CORP.

4. Rotate the crankshaft sprocket until the camshaft position (CMP) actuator alignment mark

(1) and the crankshaft sprocket alignment mark (2) are aligned.

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. 27: View Of CMP Actuator Solenoid Valve
Courtesy of GENERAL MOTORS CORP.

5. Remove and discard the CMP actuator solenoid valve (234).

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. 28: 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

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

Fig. 29: View Of Proper CMP Actuator Removal

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