GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 GMC Sierra Denali 🢒 Steering 🢒 Power Steering System 🢒 Power Steering Pump Pulley Replacement

Power Steering Pump Pulley Replacement Except 6.6L

Tools Required

    • J 25034-C Power Steering Pump Pulley Remover
    • J 25033-C Power Steering Pump Pulley Installer

Removal Procedure
  1. Remove the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement .
  2. Remove the drive belt. Refer to one of the following:
    3. •  Drive Belt Replacement for the 4.3L engine
    •  Drive Belt Replacement - Accessory for the 4.8L, 5.3L, and 6.0L engines
    •  Drive Belt Replacement for the 6.6L (LLY) engine
    •  Drive Belt Replacement - Accessory for the 8.1L engine

    Object Number: 649303 Size: SH
  3. Remove the power steering pump pulley using the J 25034-C .

Installation Procedure

    Object Number: 643361 Size: SH
  1. Place the power steering pump pulley on the end of the power steering pump shaft.
  2. Install the power steering pump pulley using J 25033-C .

    3. Object Number: 245012 Size: SH
  3. Ensure that the power steering pump pulley (1) is flush against the power steering pump shaft (2), with an allowable variance of 0.25 mm (0.010 in).
  4. Install the drive belt. Refer to one of the following:
    5. •  Drive Belt Replacement for the 4.3L engine
    •  Drive Belt Replacement - Accessory for the 4.8L, 5.3L, and 6.0L engines
    •  Drive Belt Replacement for the 6.6L (LLY) engine
    •  Drive Belt Replacement - Accessory for the 8.1L engine
  5. Install the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement .

Power Steering Pump Pulley Replacement 6.6L

Tools Required

    • J 25034-C Power Steering Pump Pulley Remover
    • J 25033-C Power Steering Pump Pulley Installer

Removal Procedure

    Object Number: 666693 Size: SH
  1. Remove the bolt retaining the battery junction block from the power steering bracket.
  2. Remove the accessory drive belt. Refer to Drive Belt Replacement.

    3. Object Number: 698146 Size: SH
  3. Remove the power steering pump front bracket bolts from the accessory bracket.

    4. Object Number: 656330 Size: SH
  4. Remove the power steering pump rear bracket bolts.
  5. Pull the power steering pump away from the accessory bracket to gain access to the pulley.

    6. Object Number: 649303 Size: SH
  6. Use the J 25033-C to remove the power steering pump pulley.

Installation Procedure

    Object Number: 643361 Size: SH
  1. Place the power steering pump pulley on the end of the power steering pump shaft.
  2. Install the power steering pump pulley using J 25033-C .

    3. Object Number: 245012 Size: SH
  3. Ensure that the power steering pump pulley (1) is flush against the power steering pump shaft (2), with an allowable variance of 0.25 mm (0.010 in).
  4. Reposition the power steering pump to the accessory bracket.

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


    Object Number: 656330 Size: SH
  5. Install the power steering pump rear bracket bolts.

    6. Tighten
    Tighten the rear bracket bolts to 50 N·m (37 lb ft).


    Object Number: 698146 Size: SH
  6. Install the power steering pump front bracket bolts to the accessory bracket.

    7. Tighten
    Tighten the front bracket bolts to 50 N·m (37 lb ft).

  7. Install the accessory drive belt. Refer to Drive Belt Replacement.

    8. Object Number: 666693 Size: SH
  8. Install the bolt retaining the battery junction block to the power steering bracket.