GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2002 🢒 Express 🢒 Engine 🢒 Engine Electrical 🢒 Drive Belt Replacement

Removal Procedure

    Object Number: 749313 Size: SH
  1. Disconnect the following electrical connectors:
    2. • Mass airflow (MAF) sensor (1)
    • Intake air temperature (IAT) sensor (2)

    Object Number: 749314 Size: SH
  2. Loosen the clamp at the air cleaner.
  3. Remove the air cleaner bolts.
  4. Remove the air cleaner.

    5. Object Number: 712022 Size: SH
  5. Loosen the clamp (2) at the throttle body (1).
  6. Remove the air cleaner duct (3).

    7. Object Number: 71686 Size: SH
  7. Remove the coolant recovery reservoir bolt.
  8. Reposition the coolant recover reservoir to the side.

    9. Object Number: 745524 Size: SH
  9. Install a breaker bar to the belt tensioner.
  10. Rotate the belt tensioner clockwise in order to relieve tension on the drive belt.
  11. If equipped with air conditioning (A/C), remove the drive belt (1) from the pulleys and the tensioner.
  12. If equipped without A/C, remove the drive belt (2) from the pulleys and the tensioner.
  13. Slowly release the tension on the belt tensioner.
  14. Remove the breaker bar from the belt tensioner.
  15. Clean and inspect the belt surfaces of all the pulleys.

Installation Procedure

    Object Number: 745524 Size: SH
  1. Route the drive belt around all the pulleys, except the tensioner.
  2. Install a breaker bar to the belt tensioner.
  3. Rotate the belt tensioner clockwise in order to relieve tension on the tensioner.
  4. If equipped without A/C, install the drive belt (2) over the tensioner.
  5. If equipped with A/C, install the drive belt (1) over the tensioner.
  6. Slowly release the tension on the drive belt tensioner.
  7. Remove the breaker bar from the belt tensioner.
  8. Inspect the drive belt for proper installation and alignment.

    9. Object Number: 71686 Size: SH
  9. Position the coolant recover reservoir to the correct location.

    10. 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.

  10. Install the coolant recovery reservoir bolt.

    11. Tighten
    Tighten the coolant recovery reservoir bolt to 11 N·m (97 lb in).


    Object Number: 712022 Size: SH
  11. Install the air cleaner duct (3).
  12. Tighten the clamp (2) at the throttle body (1).

    13. Tighten
    Tighten the air cleaner duct clamp to 4 N·m (35 lb in).


    Object Number: 749314 Size: SH
  13. Install the air cleaner.
  14. Install the air cleaner bolts.

    15. Tighten
    Tighten the air cleaner bolts to 10 N·m (89 lb in).

  15. Tighten the clamp at the air cleaner.

    16. Tighten
    Tighten the air cleaner duct clamp to 4 N·m (35 lb in).


    Object Number: 749313 Size: SH
  16. Connect the following electrical connectors:
    17. • MAF sensor (1)
    • IAT sensor (2)