Bendix

[Waterloo]

I looked up the code, rather generic...

Possible causes:Slow brake release; foundation
Slow recovery of one wheel of brake mechanical faults; dry
bearings; broken spring; modulator fault;
check for kinks and blockages,incorrect piping, wiring.
Inspect exciter ring for damage

I would get under the truck, start inspecting the brakes and the ABS lines and even the tone rings. Could just be dirt and a good power washing is in order, or a blown wheel seal gumming up the works. Best bet, get under there and visually inspect and go from there. You may need a hand, someone in the cab applying the brakes while you get under there. Take a small pry bar or decent sized screw driver and poke around. Check the pads and linings, etc...

Also, look at your pin bushings for the rear suspension and the torque rods up between the frame rails on the rear drives. Any odd or uneven wear on the drive tires? You will be back there, good time to look.

Welcome to ownership, time to educate yourself. :-)