Hummer H3. Manual — part 504

Fig. 52: PCV Tube
Courtesy of GENERAL MOTORS CORP.

3. Install the PCV tube (1) to the air cleaner outlet duct, if required.

IMPORTANT: Route the PCV tube between the engine harness and

generator battery jumper cable.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 53: Positive Crankcase Ventilation Hose/Pipe/Tube Replacement
Courtesy of GENERAL MOTORS CORP.

4. Install the PCV hose to the intake manifold fitting and left valve rocker arm cover, if

required.

5. Install the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield

Replacement.

PCV HOSE/TUBE

Removal Procedure

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 54: PCV Hose/Tube
Courtesy of GENERAL MOTORS CORP.

1. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct

Replacement .

2. Remove the generator. Refer to Generator Replacement (LH8) .

3. Remove the engine harness retainer nut (1).

4. Remove the engine harness retainer from the stud and locator pin.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

5. Disconnect the engine harness electrical connector (2) from the evaporative emission

(EVAP) canister purge solenoid.

6. Disconnect the engine wiring harness electrical connector (3) from the manifold absolute

pressure (MAP) sensor.

Fig. 55: Engine Harness Electrical Connector
Courtesy of GENERAL MOTORS CORP.

7. Disconnect the engine harness electrical connector (1) from the ignition coil harness

electrical connector.

8. Disconnect the engine harness electrical connectors (2) from the left side fuel injectors.

9. Remove the engine harness clip (3) from the ignition coil bracket stud.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3