GM Service Manual Online
For 1990-2009 cars only

Power Steering Pump Replacement LZ4, LZ9


Object Number: 1774493  Size: MF

Callout

Component Name

Preliminary Procedures

  1. Remove the intake manifold Cover. Refer to Intake Manifold Cover Replacement for the 3.5L engine or Intake Manifold Cover Replacement for the 3.9L engine.
  2. Remove the drive belt. Refer to Drive Belt Replacement for the 3.5L engine or Drive Belt Replacement for the 3.9L engine.
  3. Remove the drive belt idler pulley. Refer to Drive Belt Idler Pulley Replacement for the 3.5L engine or Drive Belt Idler Pulley Replacement for the 3.9L engine.
  4. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement for the 3.5L engine or Air Cleaner Assembly Replacement for the 3.9L engine.
  5. Remove the engine mount strut. Refer to Engine Mount Strut Replacement for the 3.5L engine or Engine Mount Strut Replacement for the 3.9L engine.
  6. Remove the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement .

1

Engine Lift Bracket Bolt (Qty: 3)

Notice: Refer to Fastener Notice in the Preface section.

Tighten
50 N·m (37 lb ft)

2

Engine Lift Bracket

3

Power Steering Gear Inlet Pipe/Hose Fitting

Tip

    • Use an appropriate tool to remove the power steering fluid from the reservoir before removing the hoses from the pump.
    • Use a new O-ring seal for installation.

Tighten
27 N·m (20 lb ft)

4

Power Steering Reservoir Inlet Pipe/Hose

Tip
Compress the clamp and to disconnect the return hose from the power steering reservoir.

5

Power Steering Pump Bolt (Qty: 3)

Tighten
25 N·m (18 lb ft)

6

Power Steering Pump

Tip
After installation, fill and bleed the power steering system. Refer to Power Steering System Bleeding .

Power Steering Pump Replacement LY7


Object Number: 1873597  Size: MF

Callout

Component Name

Preliminary Procedures

  1. Remove the drive belt. Refer to Drive Belt Replacement .
  2. Remove the right front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  3. Remove as much power steering fluid from the remote power steering fluid reservoir as possible.
  4. Place drain pans under the vehicle as needed.

1

Power Steering Fluid Reservoir Outlet Hose Clamp

2

Power Steering Fluid Reservoir Outlet Hose

3

Power Steering Gear Inlet Hose

Notice: Refer to Fastener Notice in the Preface section.

Procedure

Discard the and install a NEW power steering gear inlet hose O-ring seal prior to installation of the hose.

Tighten
27 N·m (20 lb ft)

4

Engine Mount Adapter Bolt

Tighten
58 N·m (43 lb ft)

5

Power Steering Pump Bolt

Tighten
50 N·m (37 lb ft)

6

Power Steering Pump

Procedure

  1. Remove the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement .
  2. Remove the engine mount adapter bracket bolts.
  3. Remove the engine mount adapter bracket.
  4. Fill and bleed the power steering system. Refer to Power Steering System Bleeding .

Tip
Clean any excess power steering fluid from the vehicle.

Tighten
9 N·m (80 lb in)