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Brake pedal

Tiny
BIG ES
  • MEMBER
  • 2001 GMC YUKON
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
Replace brake lines, bled ABS with scan tool as well as bled brakes all the way around. When stopping on the snow or ice brake pedal goes to floor.
Monday, December 11th, 2017 AT 2:35 PM

5 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,002 POSTS
Does it stop okay on bare pavement with no ABS activation? Is the ABS activating when the pedal drops? If yes then you still have air in the ABS system. It can take two to three bleed cycles of the unit to get all the air out.
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Thursday, March 11th, 2021 AT 1:21 PM
Tiny
BIG ES
  • MEMBER
  • 3 POSTS
Yes and yes that is when it drops. I will bleed everything again. Thank you for your reply.
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Thursday, March 11th, 2021 AT 1:21 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,002 POSTS
Have any luck or is it still dropping?
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Thursday, March 11th, 2021 AT 1:21 PM
Tiny
BIG ES
  • MEMBER
  • 3 POSTS
Yes got it all fixed took about 4 times of bleeding it but all good now. Thanks again
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Thursday, March 11th, 2021 AT 1:21 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,002 POSTS
Yeah, that's about normal for GM ABS. Lots of small passages that hold air. Can take some "creative language" to get it all out.

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Thursday, March 11th, 2021 AT 1:21 PM

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