GM Metro/Sprint 1985-1993 Repair Guide

Brake System Bleeding


See Figures 1 and 2

Click image to see an enlarged view

Fig. Fig. 1: Bleeding the front brakes

Click image to see an enlarged view

Fig. Fig. 2: Bleeding the rear brakes

  1. Clean the bleeder screw at each wheel.
  3. Start with the wheel farthest from the master cylinder (right rear).
  5. Attach a rubber hose to the bleeder screw and place the end in a clear container of brake fluid.
  7. Fill the master cylinder with brake fluid. Have an assistant slowly pump up the brake pedal and hold the pressure.
  9. Open the bleed screw about 1 / 4 turn, press the brake pedal to the floor, close the bleed screw and slowly release the pedal. Continue until no more air bubbles are forced from the cylinder on application of the brake pedal.
  11. Repeat procedure on remaining wheel cylinders and calipers, still working from the cylinder/caliper farthest from the master cylinder.

Master cylinders equipped with bleed screws may be bled independently. When bleeding the master cylinder, it is necessary to cap 1 reservoir section while bleeding the other to prevent pressure loss through the cap vent hole.