GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Replacement .
  2. Tilt the cab. Refer to Cab Tilting .
  3. Remove the air conditioning compressor, if equipped. Refer to Air Conditioning Compressor Replacement .
  4. Remove the generator. Refer to Generator Replacement .

  5. Object Number: 1253262  Size: SH
  6. Remove the idler cap, bolt and pulley.

  7. Object Number: 788509  Size: SH
  8. Remove the belt tensioner bolt and the belt tensioner.
  9. Remove the accessory mounting bracket bolts.
  10. Remove the accessory mounting bracket.

Installation Procedure

  1. Install the accessory mounting bracket.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the accessory mounting bracket bolts.
  4. Tighten
    Tighten the accessory mounting bracket bolts to 50 N·m (37 lb ft).


    Object Number: 788509  Size: SH
  5. Install the belt tensioner to the accessory mounting bracket with bolt.

  6. Object Number: 1253262  Size: SH
  7. Install the idler pulley on the accessory mounting bracket with bolt and cap.
  8. Install the air conditioning compressor mounting bolts, if equipped. Refer to Air Conditioning Compressor Replacement .
  9. Install the generator. Refer to Generator Replacement .
  10. Lower the cab. Refer to Cab Tilting .
  11. Connect the negative battery cable. Refer to Battery Negative Cable Replacement .