GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2009 🢒 H2 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Drive Belt Idler Pulley Replacement

Removal Procedure

    Object Number: 678804 Size: SH
  1. Loosen the drive belt idler pulley bolt.
  2. Remove the accessory drive belt. Refer to Drive Belt Replacement - Accessory.
  3. Remove the drive belt idler pulley and bolt.

Installation Procedure

    Object Number: 678804 Size: SH
  1. Install the drive belt idler pulley and bolt to the generator bracket.

    2. Snug the bolt finger tight.

  2. Install the drive belt. Refer to Drive Belt Replacement - Accessory.

    3. Caution: Refer to Fastener Caution in the Preface section.

  3. Tighten the drive belt idler pulley bolt.

    4. Tighten
    Tighten the drive belt idler pulley bolt to 50 N·m (37 lb ft).