Brake pedal

2001 GMC YUKON
160,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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BIG ES
  • MEMBER
  • 3 POSTS
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.
Dec 11, 2017 at 2:35 PM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
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.
Mar 11, 2021 at 1:21 PM
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BIG ES
  • MEMBER
  • 3 POSTS
Yes and yes that is when it drops. I will bleed everything again. thank you for your reply.
Mar 11, 2021 at 1:21 PM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
Have any luck or is it still dropping?
Mar 11, 2021 at 1:21 PM
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BIG ES
  • MEMBER
  • 3 POSTS
Yes got it all fixed took about 4 times of bleeding it but all good now. Thanks again
Mar 11, 2021 at 1:21 PM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
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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Mar 11, 2021 at 1:21 PM
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