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Abs/traction control and now trailer brake. Please help

3383 Views 5 Replies 5 Participants Last post by  battlerattle
Hey all, love the forum, should have joined months ago. I’ve had warning lights on for ABS and traction control for a while. I replaced a bad speed sensor to no avail. Changed the ABS control module. Only change now is that there is also a “service trailer brake system” warning in addition to the other two. Anyone have any ideas? Thanks!
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