Hummer H2. Manual - part 1704

Fig. 22: Accessory Drive Belt
Courtesy of GENERAL MOTORS CORP.

3. Install a breaker bar with hex-head socket to the drive belt tensioner bolt.

4. Rotate the drive belt tensioner clockwise in order to relieve tension on the belt.

5. Remove the belt from the pulleys and the drive belt tensioner.

6. Slowly release the tension on the drive belt tensioner.

7. Remove the breaker bar and socket and from the drive belt tensioner bolt.

8. Clean and inspect the belt surfaces of all the pulleys.

Installation Procedure

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 23: Accessory Drive Belt
Courtesy of GENERAL MOTORS CORP.

1. Route the drive belt around all the pulleys except the idler pulley.

2. Install the breaker bar with hex-head socket to the belt tensioner bolt.

3. Rotate the belt tensioner clockwise in order to relieve the tension on the tensioner.

4. Install the drive belt under the idler pulley.

5. Slowly release the tension on the belt tensioner.

6. Remove the breaker bar and socket from the belt tensioner bolt.

7. Inspect the drive belt for proper installation and alignment.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 24: Air Cleaner Outlet Duct
Courtesy of GENERAL MOTORS CORP.

8. Install the air cleaner outlet duct.

IMPORTANT: Align the arrow at the throttle body end of the duct with the throttle body

attaching stud.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

9. Tighten the air cleaner outlet duct clamps at the following locations:

Throttle body

MAF/IAT sensor

Tighten: Tighten the air cleaner outlet duct clamp screws to 7 N.m (62 lb in).

DRIVE BELT REPLACEMENT - AIR CONDITIONING

Removal Procedure

1. Remove the accessory drive belt. Refer to Drive Belt Replacement - Accessory .

2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .

3. Remove the engine protection shield. Refer to Engine Protection Shield Replacement .

Fig. 25: A/C Belt Tensioner
Courtesy of GENERAL MOTORS CORP.

4. Install a ratchet into the air conditioning (A/C) belt tensioner adapter opening.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2