I suspect from just sitting...

Drive the truck...creeping into garage...ABS kicks in. ? Truck has been sitting for a few months.

garage surface is dry and clean...no reason for it to engage.

Bad sensor?...faulty connection?...suggestions? Before I open my wallet up for dealer.

Thanks

 

check power steering fluid. check brakes. mine went off a bunch of times and found out all my pads and shoes were next to shot. if the brake pedal is soft and you push down too far the abs will go off.