Chevrolet Silverado / GMC Sierra. Manual — part 275

4. Install the J 41478 threaded rod (with nut, washer, guide, and oil seal) into the end of the

crankshaft. See Special Tools.

5. Use the J 41478 in order to install the oil seal into the cover bore. See Special Tools.

1. Use a wrench and hold the hex on the installer bolt.

2. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the

cover bore.

3. Remove the J 41478 . See Special Tools.

4. Inspect the oil seal for proper installation.

The oil seal should be installed evenly and completely into the front cover bore.

6. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement.

CAMSHAFT POSITION ACTUATOR MAGNET REPLACEMENT

Removal Procedure

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 141: View Of CMP Actuator Magnet, Bolts, Gasket & Oil Seal
Courtesy of GENERAL MOTORS CORP.

1. Remove the water pump. Refer to Water Pump Replacement .

2. Disconnect the engine harness electrical connector from the camshaft position (CMP)

actuator magnet.

3. Remove the CMP actuator magnet bolts (751) and magnet (752).

4. Remove and discard the CMP actuator magnet gasket (753).

Installation Procedure

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2