could be a abs sensor in one of the front hubs, or the electronic brake control module located on the drivers side frame rail near under the front seat. 2 very common causes for the abs light but really need to have codes read to know the proper place to start.So on the way up to the campground this last weekend I noticed my ABS light kicked on....after reaching the campground and shutting the truck off and turning it back on the next morning the light was off and stayed off all day...on the way back home it came back on, I noticed anytime I reach 60MPH the light kicks on. What's the deal?