Keith Browning Posted February 17, 2005 Share Posted February 17, 2005 We have seen several 2003 F450/F550 Superduty trucks with 4WABS exhibit sticking brakes. Under moderate to heavy brake applications the brakes may become locked and stay locked even with the driver's foot off the pedal and the vehicle will not move. A light tap on the brake pedal releases the brakes. Replacing the ABS HCU corrected the issue on all of them. Quote Link to comment Share on other sites More sharing options...
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