Power Brake Booster Vacuum Check Valve and Hose Replacement. Pontiac G5 2008

GM Service Manual Online

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2008 🢒 G5 🢒 Engine 🢒 Engine Cooling 🢒 Power Brake Booster Vacuum Check Valve and Hose Replacement

Power Brake Booster Vacuum Check Valve and Hose Replacement LNF

Removal Procedure

Apply and release the brake pedal several times until the pedal becomes firm to deplete the power brake booster vacuum reserve.
Disconnect the power brake booster vacuum sensor electrical connector.
Remove the power brake booster vacuum sensor (1) from the power vacuum brake booster.
Release the hose clamp (2) and remove the vacuum hose (3) from the vacuum sensor.

Release the hose clamp (1) and disconnect the vacuum hose from the intake manifold vacuum port.

Installation Procedure

Position the hose clamp (1) to the vacuum hose and install the hose to the intake manifold vacuum port.

Install the power brake booster vacuum sensor (1) to the power vacuum brake booster.

If necessary, a small amount of denatured alcohol can be used as an assembly aid for installing the vacuum sensor to the vacuum booster grommet. Do not use soap.

Position the hose clamp (2) to the vacuum hose (3) and install the hose to the power brake booster vacuum sensor.

If necessary, a small amount of denatured alcohol can be used as an assembly aid for installing the vacuum hose to the vacuum sensor. Do not use soap.

Connect the power brake booster vacuum sensor electrical connector.

Power Brake Booster Vacuum Check Valve and Hose Replacement L61

Callout	Component Name
Preliminary Procedures Place the ignition switch in the OFF position. Apply and release the brake pedal several times until the pedal becomes firm to deplete the power brake booster vacuum reserve.
1	Vacuum Brake Booster Hose Quick Connect
2	Vacuum Brake Booster Check Valve Tip If necessary, a small amount of denatured alcohol can be used as an assembly aid for installing the vacuum brake booster check valve to the vacuum booster grommet. Do not use soap.
3	Vacuum Brake Booster Hose Clamp
4	Vacuum Brake Booster Hose Tip If necessary, a small amount of denatured alcohol can be used as an assembly aid for installing the vacuum hose to the vacuum brake booster check valve. Do not use soap.

Power Brake Booster Vacuum Check Valve and Hose Replacement LE5

Callout

Component Name

Preliminary Procedures

Place the ignition switch in the OFF position.
Apply and release the brake pedal several times until the pedal becomes firm to deplete the power brake booster vacuum reserve.

Vacuum Brake Booster Hose Clamp

Vacuum Brake Booster Hose Retaining Bracket

Tip

•	Ensure the retaining bracket is properly positioned when routing the brake booster vacuum hose.

•	Ensure the vacuum brake booster hose does not interfere with the coolant hoses or the coolant reservoir tank.

Vacuum Brake Booster Hose Clamp

Vacuum Brake Booster Check Valve

Tip
If necessary, a small amount of denatured alcohol can be used as an assembly aid for installing the vacuum brake booster check valve to the vacuum booster grommet. Do not use soap.

Vacuum Brake Booster Hose

Tip
If necessary, a small amount of denatured alcohol can be used as an assembly aid for installing the vacuum hose to the vacuum brake booster check valve. Do not use soap.