ABS Warning Light On and/or Erratic ABS Operation on GMC Yukon Denali

The anti-lock brake system (ABS) front wheel speed sensors are prone to failure. When a sensor fails, the ABS warning light may illuminate and/or the ABS system may activate erratically.

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Average mileage: 129,884 (59,000–200,654)
6 model years affected: 1999, 2000, 2002, 2003, more2004, 2005
7 people reported this problem
1 person shared problem details
2005 GMC Yukon Denali130,000
I also have ABS issues ongoing. I've taken the truck into the dealer a few times (one time when ABS kicked in going down a hill) and they have tried different things but never fails it comes back. Especially when I hit a bump and oddly enough when the weather warms up. It doesn't seem to be serious after the hill issue, so I've grown accustom to ignoring it because I don't want to pay more money for the dealer to guess what the issue is.
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