Sounds like brake fluid pressure not being released from the front brakes or seized front calipers .
When was the last brake job?
Did you just have the truck serviced ?
Things like this happen if someone puts something other than brake fluid in the master cylinder reservoir.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.