Question about 2008 Cadillac Escalade Ext

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2008 escalade ext, cant bleed front brakes

Cannot get air out of front brakes on 2008 escalde ext, tried bleeding according to plug in scanner but still cannot get air out. tried gravity flow and pumping peddle and opening bleeder with no results.

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  • Cadillac Master
  • 808 Answers

Some have bleeder screws on the abs control module if this does not help to remove the air i have used syringes filling them up and pressure filling the caliper and air returns to master cylinder takes about 3 ounces of brake fluid per side.

Posted on Apr 17, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

CRTN
  • 716 Answers

SOURCE: when apply brake car not stoping (cadillac 2001 STS car )

you need to bleed all four corners and when doing so use a hose from the bleeder valve into a clear jar half full of brake fluid. Keep The Hose Under The Level Or Air Will Get Back Into The System.
When Bleeding Close The Valve And Have Someone Push The Brake Pedal 1,2,3 Hold Then While The Person Is Still Holding The Brake Slightly Open The Valve Then Keep Doing It Until You Don't Even Get A Bubble. Do This On All 4 Wheels And You'll Be Good To Go.
The More Air That Comes Out The Harder The Pedal Will Get. Make Sure To Keep Filling The Reservoir Cause If It Empty's You'll Have To Start All Over.

Sincerely,
Michael Scott

Posted on Jan 21, 2009

  • 202 Answers

SOURCE: I have a nissan 300zx

The brake booster is not the problem. The Master cylinder will need to be bench bled before bleeding the braking system.

Posted on Mar 26, 2009

  • 105 Answers

SOURCE: suddenly without brakes or power steering

check belt and check p/s fluid if ok pump is probably bad with truck running you should be abel to see the fluid flowing threw th reservior when running

Posted on Jun 04, 2009

  • 176 Answers

SOURCE: got answer to my question about air in brakes but

to bleed the brake line somebody as to pump the brake pedal
3 to 4 times and somebody opens the bleeder on the brake caliper

starting by the right rear wheel, then the left rear wheel, then front right wheel anf finishing with the front left wheel bleeder.

to bleed the master cylinder is the same principle pump pedal 3,4 times
but this time open the line at the master cylinder starting with the rear hoses

hope it is helpful

Posted on Jul 08, 2009

  • 12 Answers

SOURCE: 2000 escalade ext ...only rear air conditioning

Sounds like you have a door mode actuator failed. This is fairly common. Sometimes the door actually breaks. You may have to remove the whole HVAC box to fix it if the door broke

Posted on Aug 15, 2009

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Your master cylinder seals could be by- passing internally or it is not being bled right.
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You need to bleed them accordin to manufactures specs. When. Bleedin abs u need scan tool to open valve because air gets trapped in there. There will be a certain order weather u have diagnal split or front rear split

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you may have to run the motor as you bleed the brakes so the abs hydraulic unit can purge any air that might be caught within the unit itself.did you bench bleed the master cylinder before installing it on the car.this can save time and reduce the possible chance of air entering the system.make sure you don`t allow the master cylinder to run low on brake fluid.i also assume that you are bleeding the brakes properly.Left front brake works with Right rear brake and Right front brake works with Left rear brake.this is how the brakes should be bleed.

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I hve a 96 chevy 1500 4wd with brake issues. ABS light is on in the dash. Have replaced both frt calipers, pads, hoses. Replaced rear brakes and drums. Replaced master cylinder. Bled two quarts of...


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.
  1. Open the internal bleed valve 1 / 4 - 1 / 2 turn each.
  2. Install one tool J-39177 on the left bleed stem of the EHCU. Install one tool on the right bleed stem and install the third tool on the combination valve.
  3. Inspect the fluid level in the master cylinder, filling if needed.
  4. Slowly depress the brake pedal and hold it down.
  5. Open the left bleeder on the front of the unit. Allow fluid to flow until no air is seen or until the brake pedal bottoms.
  6. Close the left bleeder, then slowly release the pedal. Wait 15 seconds.
  7. Repeat Steps 4, 5 and 6, including the 15 second wait, until no air is seen in the fluid.
  8. Tighten the left internal bleed valve to 5 ft. lbs. (7 Nm).
  9. Repeat Steps 3-7 at the right bleeder on the front of the unit.
  10. When bleeding of the right port is complete, tighten the right internal bleed valve to 5 ft. lbs. (7 Nm).
  11. Remove the 3 special tools.
  12. Check the master cylinder fluid level, refilling as necessary.
  13. Bleed the individual brake circuits at each wheel.
  14. Switch the ignition ON . Use the hand scanner to perform 3 function tests on the system.
  15. Carefully test drive the vehicle at moderate speeds; check for proper pedal feel and brake operation. If any problem is noted in feel or function, repeat the entire bleeding procedure.

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Internal leak in master cylinder.
Bleeding procedure : Use procedure specified by manufacturer

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