GM Service Manual Online
For 1990-2009 cars only

Power Brake Booster Inlet Hose Replacement Gas

Removal Procedure


    Object Number: 650858  Size: SH

    Notice: Do not start the vehicle with any power steering gear inlet or outlet hoses disconnected. When disconnected, plug or cap all openings of components. Failure to do so could result in contamination or loss of power steering fluid and damage to the system.

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the engine protection shield. Refer to Engine Protection Shield Replacement .
  3. Install a drain pan under the vehicle.
  4. Remove the brake booster inlet hose (1) from the brake booster (2).
  5. Lower the vehicle.
  6. Remove the brake booster inlet hose from the power steering pump.
  7. Remove the brake booster inlet hose from the vehicle.

Installation Procedure


    Object Number: 650858  Size: SH

    Notice: The inlet and outlet hoses must not be twisted during installation. Do not bend or distort the inlet or outlet hoses to make installation easier. Failure to follow these procedures could result in component damage.

  1. Route the hose in the same position the hose occupied prior to removal.
  2. Install the brake booster inlet hose (1) to the brake booster (2). Hand tighten only.
  3. Raise the vehicle.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the brake booster inlet hose to the power steering pump.
  6. Tighten
    Tighten the brake booster inlet hose fittings to 28 N·m (21 lb ft).

  7. Install the engine protection shield. Refer to Engine Protection Shield Replacement .
  8. Lower the vehicle.
  9. Tighten the brake booster inlet hose to brake booster.
  10. Tighten
    Tighten the brake booster inlet hose fitting to 28 N·m (21 lb ft).

  11. Remove the drain pan from under the vehicle.
  12. Bleed the power steering system. Refer to Power Steering System Bleeding .

Power Brake Booster Inlet Hose Replacement Diesel

Removal Procedure

    Notice: Refer to Power Steering Hose Disconnected Notice in the Preface section.


    Object Number: 877283  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the LH front tire assembly. Refer to Tire and Wheel Removal and Installation.
  3. Remove the LH wheelhouse panel. Refer to Wheelhouse Panel Replacement.
  4. Working through the left wheelhouse, loosen the charged air cooler inlet duct clamp (1) at the charged air cooler.
  5. Disconnect the charged air cooler from the elbow connection (2) and reposition the left charged air cooler inlet duct for access to the back of the power steering pump.
  6. Remove the engine protection shield. Refer to Engine Protection Shield Replacement.
  7. Install a drain pan under the vehicle.

  8. Object Number: 650858  Size: SH
  9. Remove the brake booster inlet hose (1) from the power steering pump (3) through wheel well.
  10. Lower the vehicle.
  11. Remove the brake booster inlet hose (1) from the brake booster (2).
  12. Remove the brake booster inlet hose from the vehicle.

Installation Procedure

    Notice: Refer to Installing Hoses without Twists or Bends Notice in the Preface section.


    Object Number: 650858  Size: SH
  1. Route the hose in the same position the hose occupied prior to removal.
  2. Install the brake booster inlet hose (1) to the brake booster (2). Hand tighten only.
  3. Raise the vehicle.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the brake booster inlet hose (1) to the power steering pump (3) through the wheel well.
  6. Tighten
    Tighten the brake booster inlet hose fitting to 28 N·m (21 lb ft).

  7. Install the engine protection shield. Refer to Engine Protection Shield Replacement.
  8. Important: Do not over tighten the charged air cooler pipe clamps. If the clamp is over tightened, the pipe may become distorted allowing separation of the hose from the pipe. Ensure the charged air cooler pipe/hoses are properly orientated.

  9. Working through the left wheelhouse, connect the charged air cooler inlet duct (1) to the elbow.
  10. Tighten the charged air cooler outlet duct to intake hose clamp.
  11. Tighten
    Tighten the clamps to 8 N·m (70 lb in).

  12. Install the LH wheelhouse panel. Refer to Wheelhouse Panel Replacement.
  13. Install the LH front tire assembly. Refer to Tire and Wheel Removal and Installation.
  14. Lower the vehicle.
  15. Tighten the brake booster inlet line to brake booster.
  16. Tighten
    Tighten the brake booster inlet hose fitting to 28 N·m (21 lb ft).

  17. Remove the drain pan from under the vehicle.
  18. Bleed the power steering system. Refer to Power Steering System Bleeding.