One problem related to brake abs warning light has been reported for the 2003 GMC Envoy. The most recently reported issues are listed below.
My complaint is about the abs brakes warning light and the feel of the brakes while in motion. When coming to a stop, reachibg 5mph, the brakes performance is feeling a resistant andjerky. It is as if the brakes do not want to press all the way down when completely stopping. The warning light on my dash says, "service abs brakes. " this is a rather scarey feel coming from the brake peddle.