Master Cylinder Reservoir Replacement (JD9, JF3, JF7)

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Master Cylinder Reservoir, Fluid Level Sensor Electrical Connector & Seals

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
WARNING: Refer to Brake Fluid Irritant Warning . CAUTION: Refer to Brake Fluid Effects on Paint and Electrical Components Caution . Preliminary Procedures Using a suitable tool, remove the brake fluid from the brake master cylinder reservoir. Discard the brake fluid into an approved container.
1	Master Cylinder Fluid Level Sensor Electrical Connector
2	Master Cylinder Reservoir Procedure: Carefully spread the 2 locking tabs and lift the master cylinder reservoir upward.
3	Master Cylinder Reservoir Seals (Qty: 2) Tip: Lubricate the seals and the outer surface area of the reservoir-to-housing barrels with Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667) or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.