For 1990-2009 cars

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. Using a suitable tool, remove the brake fluid from the brake master cylinder reservoir.
2. Discard the brake fluid into an approved container.
3. Remove the air cleaner element. Refer to Air Cleaner Element Replacement.
4. Remove the windshield washer solvent heater, if equipped. Refer to Windshield Washer Solvent Heater Replacement.

1 | Master Cylinder Fluid Level Sensor Electrical Connector

#### Procedure

Disconnect the electrical connector.

2 | Master Cylinder Reservoir

#### Procedure

Carefully spread the 4 locking tabs and lift the master cylinder reservoir upward.

3 | Master Cylinder Reservoir Seals (Qty: 2)

#### Procedure

1. Lubricate the seals and the outer surface area of the reservoir-to-housing barrels with GM approved brake fluid from a clean, sealed brake fluid container. Refer to Fluid and Lubricant Recommendations.
2. Place the new lubricated seals on the reservoir-to-housing barrels before installing the reservoir to the master cylinder housing.
3. Fill the brake master cylinder reservoir. Refer to Master Cylinder Reservoir Filling.