Chevrolet Silverado / GMC Sierra. Service manual — part 278

Fig. 149: View Of CMP Actuator Solenoid Valve
Courtesy of GENERAL MOTORS CORP.

1. Install the a NEW CMP actuator solenoid valve until snug.

With the CMP actuator properly positioned onto the camshaft, the CMP actuator solenoid
valve can be threaded completely into the camshaft using light hand pressure. Tighten by
hand until snug.

NOTE:

Refer to Fastener Notice .

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

2. Tighten the CMP actuator solenoid valve.

Tighten:

1. Tighten the solenoid valve a first pass to 65 N.m (48 lb ft).

2. Tighten the solenoid valve a final pass and additional 90 degrees using J 45059 . See

Special Tools.

3. Install the CMP actuator magnet. Refer to Camshaft Position Actuator Magnet

Replacement.

CAMSHAFT POSITION ACTUATOR REPLACEMENT

Tools Required

EN 46330 Timing Belt Tensioner Retaining Pin. See Special Tools.

J 45059 Angle Meter. See Special Tools.

Removal Procedure

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 150: View Of CMP Actuator Solenoid Valve
Courtesy of GENERAL MOTORS CORP.

1. Remove the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector

Replacement.

2. Remove and discard the camshaft position (CMP) actuator solenoid valve (234).

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 151: View Of Proper CMP Actuator Removal
Courtesy of GENERAL MOTORS CORP.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2