GM Service Manual Online
For 1990-2009 cars only

Caution: Use only SUPREME 11 or equivalent DOT 3 brake fluid from a clean, sealed container. Do not use fluid from an open container that may be contaminated with water. Improper or contaminated fluid will result in damage to components or loss of braking, with possible personal injury.

Notice: Avoid spilling brake fluid on any of the vehicle's painted surfaces, wiring, cables, or electric connectors. Brake fluid will damage the paint and the electrical connections. If any fluid is spilled on the vehicle, flush the area to lessen the damage.

Important: 

   • Do not re-use fluid accumulated during brake hydraulic system bleeding.
   • Store brake fluid in a closed container.
   • Reseal brake fluid containers immediately after use.
   • Do not use fluid left in an open or improperly sealed container. Fluid left in an open or improperly sealed container absorbs moisture and may become contaminated.

If rubber deterioration is evident, complete the following procedure:

  1. Disassemble all hydraulic parts.
  2. Wash all the hydraulic parts with alcohol.
  3. Dry the parts with non-lubricated compressed air before reassembly in order to keep alcohol out of the system.
  4. Replace all the rubber parts in the system, including the following components:
  5. • Brake hoses
    • Master cylinder rubber parts
    • Brake caliper boots and seals
    • Wheel cylinder boots and seals
  6. Replace the combination valve and the brake pressure modulator valve. Both valves have rubber components inside which are not serviceable.
  7. Inspect the pads for brake fluid. If excessive brake fluid is present, replace the pads.

Substandard or Contaminated Brake Fluid

Caution: Use only SUPREME 11 or equivalent DOT 3 brake fluid from a clean, sealed container. Do not use fluid from an open container that may be contaminated with water. Improper or contaminated fluid will result in damage to components or loss of braking, with possible personal injury.