GM Service Manual Online
For 1990-2009 cars only

Object Number: 1990507  Size: MF

Callout

Component Name

Warning: Refer to Brake Fluid Irritant Warning in the Preface section.

Caution: Refer to Brake Fluid Effects on Paint and Electrical Components Caution in the Preface section.

Preliminary Procedures

  1. Turn the ignition switch to the OFF position.
  2. Apply the park brake.
  3. Disconnect the brake master cylinder pressure sensor electrical connector.

1

Brake Master Cylinder Pressure Sensor

Caution: Refer to Fastener Caution in the Preface section.

Procedure

  1. After the installation is complete, bleed the hydraulic brake system at the front wheels only. It is not necessary the bleed the rear hydraulic circuit. Refer to Hydraulic Brake System Bleeding.
  2. Do not lubricate the sensor threads prior to installation.

Tighten
26 N·m (19 lb ft)

2

Brake Master Cylinder Pressure Sensor O-ring Seal

Procedure

  1. Discard the O-ring seal.
  2. Do not lubricate the O-ring seal prior to installation.