Brake Proportion Valve Replacement

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Brake Proportioning Valve

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
CAUTION: Remove all the air from the hydraulic brake system anytime the hydraulic brake system is opened for repair. The entire bleeding procedure must be followed. Failure to remove all the air in the hydraulic brake system will result in reduced braking performance and possible personal injury. CAUTION: Refer to Brake Fluid Irritant Caution . NOTE: Refer to Brake Fluid Effects on Paint and Electrical Components Notice . NOTE: Refer to Fastener Notice . Fastener Tightening Specifications: Refer to Fastener Tightening Specifications .
1	Nut, Brake Pipe (Qty: 2) Tip: Mark the brake pipes in order to correctly install the pipes to the original positions prior to removal. Cap or plug the brake pipes to prevent fluid loss and contamination. Tighten: 19 N.m (14 lb ft)
2	Nut, Brake Pipe (Qty: 4) Tip: Mark the brake pipes in order to correctly install the pipes to the original positions prior to removal. Cap or plug the brake pipes to prevent fluid loss and contamination. Bleed the brake system anytime the system is opened for repairs. Refer to Hydraulic Brake System Bleeding (Pressure) or Hydraulic Brake System Bleeding (Manual) . Tighten: 19 N.m (14 lb ft)
3	Bolt, Valve Bracket Assembly Tip: Loosen bolt but do not remove. Tighten: 25 N.m (18 lb ft)
4	Bolt, Valve Bracket Assembly Tighten: 25 N.m (18 lb ft)
5	Valve, Proportioning Tip: Slide the bracket assembly upward in order to remove from frame rail.