Master Cylinder Reservoir Replacement (JD9)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Master Cylinder Reservoir Replacement (JD9, JF3, JF7)

Courtesy of GENERAL MOTORS COMPANY

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.