GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 CTS 🢒 Steering 🢒 Power Steering System 🢒 Power Steering Pump Replacement

Power Steering Pump Replacement LY7

Removal Procedure
  1. Place a drain pan under the vehicle.
  2. Remove the power steering pulley. Refer to Power Steering Pump Pulley Replacement .

    3. Object Number: 1298746 Size: SH
  3. Disconnect the power steering reservoir outlet hose from the power steering pump.

    4. Object Number: 794623 Size: SH
  4. Disconnect the power steering pressure hose from the power steering pump.

    5. Object Number: 1298748 Size: SH
  5. Remove the power steering pump bracket to engine mounting bolts.
  6. Remove the power steering pump bracket assembly.

    7. Object Number: 1298747 Size: SH
  7. Remove the power steering pump to bracket bolts
  8. Remove the pump from the bracket.

Installation Procedure

    Object Number: 1298747 Size: SH
  1. Install the pump from the bracket.

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

  2. Install the power steering pump to bracket bolts.

    3. Tighten
    Tighten the bolts to 22 N·m (17 lb ft).


    Object Number: 1298748 Size: SH
  3. Install the power steering pump bracket assembly to the engine.
  4. Install the power steering pump bracket to engine mounting bolts .

    5. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 794623 Size: SH

    Important: Clean the material from the power steering pressure hose and install a new seal.

  5. Connect the power steering pressure hose to the power steering pump.

    6. Tighten
    Tighten the hose to 40 N·m (30 lb ft).


    Object Number: 1298746 Size: SH
  6. Connect the power steering reservoir outlet hose to the power steering pump.
  7. Install the power steering pulley. Refer to Power Steering Pump Pulley Replacement .
  8. Remove the drain pan from under the vehicle.
  9. Bleed the power steering system. Refer to Power Steering System Bleeding .

Power Steering Pump Replacement LA3/LY9

Removal Procedure
  1. Place a drain pan under the vehicle.
  2. Remove the power steering pulley. Refer to Power Steering Pump Pulley Replacement .

    3. Object Number: 785731 Size: SH
  3. Disconnect the power steering reservoir outlet hose from the power steering pump.

    4. Object Number: 794623 Size: SH
  4. Disconnect the power steering pressure hose from the power steering pump.

    5. Object Number: 785728 Size: SH
  5. Remove the power steering pump mounting bolts (1, 2, and 3).
  6. Remove the power steering pump.

Installation Procedure

    Object Number: 785728 Size: SH
  1. Install the power steering pump.

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

  2. Install the power steering pump mounting bolts and tighten in sequence (1, 2 and 3).

    3. Tighten
    Tighten the bolts to 35 N·m (26 lb ft).


    Object Number: 794623 Size: SH

    Important: Clean the material from the power steering pressure hose and install a new seal.

  3. Connect the power steering pressure hose to the power steering pump.

    4. Tighten
    Tighten the hose to 40 N·m (30 lb ft).


    Object Number: 785731 Size: SH
  4. Connect the power steering reservoir outlet hose to the power steering pump.
  5. Install the power steering pulley. Refer to Power Steering Pump Pulley Replacement .
  6. Remove the drain pan from under the vehicle.
  7. Bleed the power steering system. Refer to Power Steering System Bleeding .

Power Steering Pump Replacement 5.7L

Removal Procedure
  1. Remove the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
  2. Place a drain pan under the vehicle.
  3. Remove the power steering pulley. Refer to Power Steering Pump Pulley Replacement .

    4. Object Number: 1391091 Size: SH
  4. Disconnect the power steering reservoir outlet hose from the power steering pump.

    5. Object Number: 1400678 Size: SH
  5. Disconnect the power steering pressure hose from the power steering pump.

    6. Object Number: 1400674 Size: SH
  6. Disconnect the power steering cooler outlet hose from the power steering reservoir

    7. Object Number: 1391090 Size: SH
  7. Remove the power steering pump to power steering pump bracket bolts
  8. Remove the power steering pump from the power steering pump bracket.

Installation Procedure

    Object Number: 1298747 Size: SH
  1. Install the power steering pump to the power steering pump bracket.

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

  2. Install the power steering pump to the power steering pump bracket bolts.

    3. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).


    Object Number: 1400678 Size: SH

    Important: Clean the material from the power steering pressure hose and install a new seal.

  3. Connect the power steering pressure hose to the power steering pump.

    4. Tighten
    Tighten the hose to 40 N·m (30 lb ft).


    Object Number: 1391091 Size: SH
  4. Connect the power steering reservoir outlet hose to the power steering pump.

    5. Object Number: 1400674 Size: SH
  5. Connect the power steering cooler outlet hose to the power steering reservoir.
  6. Install the power steering pulley. Refer to Power Steering Pump Pulley Replacement .
  7. Remove the drain pan from under the vehicle.
  8. Install the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
  9. Bleed the power steering system. Refer to Power Steering System Bleeding .