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Front brakes not releasing all the way.

Tiny
LASURVIVOR47
  • MEMBER
  • 2003 GMC SONOMA
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
I completely re did the braking system, except the ABS Module. All new brake lines. No crimps in the lines. All new calipers front and back. New flex lines in front wheels to calipers. Replaced the front calipers again thinking there might be a defect. Still have the same problem. Front brakes binding. Next step replaced the master cylinder. Same problem. Replaced the master cylinder again. Still the same problem. Truck has ABS. I'm wondering if the ABS Module is not releasing pressure. Any ideas? Thanks!
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Monday, September 22nd, 2014 AT 11:57 AM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If calipers aren't releasing check brake hoses going to them for being collapsed. That may be your problem.
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Monday, September 22nd, 2014 AT 12:31 PM
Tiny
LASURVIVOR47
  • MEMBER
  • 45 POSTS
Thanks for your quick response. So even though the front flex line hoses to the calipers are 10 months old, they could be defective? I appreciate your feed back, and will give that a try. Thanks again!
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Monday, September 22nd, 2014 AT 1:00 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I overlooked that sorry. You might have a pro try bleeding the system as he can open the valves on abs unit and get it done better but it still cold be the abs
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Monday, September 22nd, 2014 AT 1:12 PM
Tiny
LASURVIVOR47
  • MEMBER
  • 45 POSTS
Ok thanks. I don't have an abs computer to bleed the brakes, so I just bled them the standard way. I will do that. Thanks again for your feed back!
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Monday, September 22nd, 2014 AT 1:21 PM

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