GM Service Manual Online
For 1990-2009 cars only

    Object Number: 158551  Size: SH
  1. Route the accessory drive belt over all of the accessory pulleys EXCEPT the water pump pulley.

  2. Object Number: 158549  Size: SH
  3. Use a wrench on the center bolt of the tensioner pulley (5) and rotate downward to release drive belt tension.
  4. Install the drive belt over the water pump pulley, then, release the tensioner pulley.
  5. Inspect the drive belt to ensure it is properly seated in all of the accessory drive pulleys.
  6. Install the AIR pipe.
  7. Install the AIR pipe clamps (2).
  8. Install the upper generator nut (6).
  9. Tighten
    Tighten the upper generator nut (6) to 40 N·m (30 lb ft).

  10. Install the AIR pipe bracket nut (1).
  11. Tighten
    Tighten the AIR pipe bracket nut to 12 N·m (108 lb in).