GM Service Manual Online
For 1990-2009 cars only
Makes 馃 GMC_Truck 馃 2003 馃 GMC C Sierra - 2WD 馃 HVAC 馃 Heating, Ventilation and Air Conditioning 馃 Air Conditioning (A/C) Compressor and Power Steering Pump Bracket Replacement

Removal Procedure
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the drive belt. Refer to Drive Belt Replacement .
  3. If equipped, remove the auxiliary generator. Refer to Auxiliary Generator Replacement in Engine Electrical.
  4. Remove the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement in Engine Cooling.

    5. Object Number: 656138 Size: SH
  5. If equipped with dual generators, remove the bolt from the left side idler pulley (smooth pulley).
  6. Remove the idler pulley.

    7. Object Number: 652573 Size: SH
  7. Disconnect the air conditioning (A/C) compressor clutch electrical connector.
  8. Disconnect the A/C cut out switch electrical connector.
  9. Remove the A/C compressor bolts.
  10. Move the A/C compressor with the hoses attached to the right side of the engine compartment.

    11. Object Number: 666693 Size: SH
  11. Remove the positive cable junction block to power steering pump bolt.
  12. Secure the junction block out of the way.

    13. Object Number: 656330 Size: SH
  13. Remove the rear power steering pump bracket bolts (1).

    14. Object Number: 698146 Size: SH
  14. Remove the power steering pump front bracket bolt.
  15. Move and secure the power steering pump out of the way. The hoses and battery cables can remain attach to pump.

    16. Object Number: 660344 Size: SH
  16. Remove the A/C compressor and power steering pump bracket bolts.
  17. Remove the A/C compressor and power steering pump bracket.

Installation Procedure

    Object Number: 660344 Size: SH
  1. Position the A/C compressor and power steering pump bracket.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the A/C compressor and power steering pump bracket bolts.

    3. Tighten
    Tighten the bolts to 46 N路m (34 lb ft).


    Object Number: 698146 Size: SH
  3. Install the power steering pump and loosely install the front bracket bolts.

    4. Object Number: 656330 Size: SH

    Important: Tighten the front bracket bolts before the rear bracket bolts to ensure pulley alignment.

  4. Loosely install the rear power steering pump bracket bolts (1).

    5. Tighten

    1. Tighten the front bracket bolts to 50 N路m (37 lb ft).
    2. Tighten the rear bracket bolts to 50 N路m (37 lb ft).

    Object Number: 656138 Size: SH
  5. If equipped with dual generators, install the left side idler pulley and bolt.

    6. Tighten
    Tighten the bolt to 43 N路m (32 lb ft)

  6. Install the auxiliary generator. Refer to Auxiliary Generator Replacement in Engine Electrical.

    7. Object Number: 666693 Size: SH
  7. Install the battery cable junction block and bolt.

    8. Tighten
    Tighten the bolt to 9 N路m (80 lb in).


    Object Number: 652573 Size: SH
  8. Position the A/C compressor.
  9. Install the A/C compressor bolts.

    10. Tighten
    Tighten the bolts to 50 N路m (37 lb ft).

  10. Connect the A/C cut out switch electrical connector.
  11. Connect the A/C clutch electrical connector.
  12. Install the drive belt. Refer to Drive Belt Replacement .
  13. Install the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement in Engine Cooling.
  14. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.