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Re: 99 Blazer Front Brakes
BLEEDING BRAKE SYSTEM
ABS BLEEDING PROCEDURE
NOTE: Bleeding ABS system requires the use of Tech 2 scan tool. An
assistant is required when performing bleeding procedures.
1) Raise and support vehicle. Begin bleeding at right rear
wheel. Install a clear plastic hose to bleed screw. Immerse other end
of hose in container that is partially filled with clean brake fluid.
2) Open bleed screw 1/2 to 1 full turn. Have assistant slowly
depress brake pedal until it reaches full travel. Hold pedal until
bleed screw is closed. Release brake pedal and wait 10-15 seconds.
Repeat until clean bubble-free brake fluid is present at wheel bleed
screw.
3) Check master cylinder fluid level every 4-6 strokes of
brake pedal to avoid running system dry. Repeat steps 2) and 3) on
left rear, then right front, then left front. After bleeding all 4
wheels, go to next step.
4) Using scan tool in FUNCTION TEST, run FUNCTION TEST 4
times consecutively while applying the brake pedal firmly. Release
brake pedal between each test.
5) Rebleed all 4 wheels to remove remaining air from brake
system. Ensure brake pedal feel is appropriate before attempting to
drive vehicle. Rebleed as many times as necessary to obtain
appropriate pedal feel.
I have always done the cars I work on that way and never had any problems with the ABS. I compressed them slowly and all the cars and trucks I have worked on , still have the ABS system working fine.
Just thought I mention that. I hope what I posted up above helps you.
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