Question about 2003 Chevrolet TrailBlazer
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Posted on Jan 02, 2017
SOURCE: 1996 chev cavalier brakes
Did u replace all the brake lines, front and back brakes replaced? Make sure u did the following:
1. make sure master cylinder is topped off (full)
2. go to the bleeder the greatest distance from the master cylinder, Have someone pump the brake pedal 3 times, each time about half way down w/ pedal, on 3rd pump, they should depress the pedal half way and hold it there while u open the bleeder. When air or fluid comes out and it begins to slow, gently snug the bleeder valve shut before the pedal is released. Continue to do this until only clear, clean fluid is flowing. Keep checking the master cyl. level, if u let it go down too much u will **** air into the line and have to start all over. Go to the next bleeder that is farthest away, etc. til u do the closest bleeder. Car should be running doing this, and you MUST use safety stands so u don't have the car falling on u while u work under it. Also make sure all your new brake line connections are tight, or it will allow air into the lines. Let me know how this works for u. good luck countrycurt0
Posted on Oct 01, 2008
SOURCE: brake calipers
Did you 'bench vise' bleed the master cylinder? Also, the proper way to bleed the brakes is to start with the one closest to the master cylinder and work your way to the one furthest away. Did you re-hook up all vacume lines?
Posted on Jun 19, 2009
SOURCE: brake pedal dropping to floor
do u have the antilock brake bleeding tool? if not you will need to have the dealer bleed the brakes, the ABS control valve must be electricaly held open to bleed the brakes there of course is a special tool for this.
Posted on Oct 18, 2009
Testimonial: "Thank You"
i would have to say the master brake cylinder is at fault. there are ports in the cylinder that allow fluid back into the reservoir. these ports may be clogged. or the brake hose/line is clogged. have you changed the brake hose?
Posted on Mar 27, 2010
SOURCE: I hve a 96 chevy
you may have air trapped in the ABS EHCU. Did you use this procedure?
Bleeding the EHCU
Bleeding the EHCU requires the use of the TECH-1 scanner or its equivalent and the appropriate cartridge. Additionally, 3 tools, J-39177 or equivalent, are required. Bleeding cannot be performed without this equipment.
The EHCU must be bled after replacement or if air is trapped within the unit. It must be bled after bleeding the master cylinder and before bleeding the individual wheel circuits.
The Internal Bleed Valves on either side of the unit must be opened 1 / 4 - 1 / 2 turn before bleeding begins. These valves open internal passages within the unit. Actual bleeding is performed at the two bleeders on the front of the EHCU module. The bleeders must not be opened when the system is not pressurized. The ignition switch must be OFF or false trouble codes may be set.
Posted on Oct 10, 2010
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