Master Cylinder Replacement (JH6, JH7)

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Master Cylinder Replacement (JH6, JH7)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
CAUTION: Refer to Brake Fluid Irritant Caution . NOTE: Refer to Brake Fluid Effects on Paint and Electrical Components Notice . 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	Brake Pipe Fitting (Qty: 2) NOTE: Refer to Fastener Notice . Procedure Remove any dirt or debris from the brake pipe fitting. Cap the brake pipe fittings to prevent brake fluid loss and contamination. Tighten: 25 N.m (18 lb ft)
3	Brake Master Cylinder Nut (Qty: 2) Tighten: 33 N.m (24 lb ft)
4	Brake Master Cylinder Assembly Procedure Remove and discard the push-on nuts on the master cylinder mounting studs, if equipped. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Pressure) or Hydraulic Brake System Bleeding (Manual) .