Drive Belt Replacement - Accessory 4.8L, 5.3L, and 6.0L Engines

1. Loosen the air cleaner outlet duct clamps at the following locations:

•	The throttle body

•	The mass airflow/intake air temperature (MAF/IAT) sensor

2. Disconnect the radiator inlet hose clip from the outlet duct.
3. Remove the air cleaner outlet duct.



4. Install a breaker bar with hex-head socket to the drive belt tensioner bolt.
5. Rotate the drive belt tensioner clockwise in order to relieve tension on the belt (1).
6. Remove the belt (1) from the pulleys and the drive belt tensioner.
7. Slowly release the tension on the drive belt tensioner.
8. Remove the breaker bar and socket and from the drive belt tensioner bolt.
9. Clean and inspect the belt surfaces of all the pulleys.

1. Route the drive belt (1) 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 (1) 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 (1) for proper installation and alignment.



8. Align the arrow (2) at the throttle body end of the duct with the throttle body attaching stud (1).



9. Install the air cleaner outlet duct.
10. Connect the radiator inlet hose clip to the outlet duct.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

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

•	The throttle body

•	The MAF/IAT sensor

Tighten
Tighten the clamps to 4 N·m (35 lb in).

Drive Belt Replacement - Accessory 5.3L Engine w/RPO HP2

1. Loosen the air cleaner outlet duct clamps at the following locations:

•	The throttle body

•	The mass airflow/intake air temperature (MAF/IAT) sensor

2. Disconnect the radiator inlet hose clip from the outlet duct.
3. Remove the air cleaner outlet duct.



4. Install a breaker bar with hex-head socket to the drive belt tensioner bolt.
5. Rotate the drive belt tensioner clockwise in order to relieve tension on the belt.
6. Remove the belt from the pulleys and the drive belt tensioner.
7. Slowly release the tension on the drive belt tensioner.
8. Remove the breaker bar and socket from the drive belt tensioner bolt.
9. Clean and inspect the belt surfaces of all the pulleys.

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.



8. Align the arrow (2) at the throttle body end of the duct with the throttle body attaching stud (1).



9. Install the air cleaner outlet duct.
10. Connect the radiator inlet hose clip to the outlet duct.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

11. Tighten the air cleaner outlet duct clamp screws at the following locations:

•	The throttle body

•	The MAF/IAT sensor

Tighten
Tighten the screws to 7 N·m (62 lb in).