I have the same issue. 3000 miles. Pulls to the right when braking and gentle pull while driving. The dealer thought I might have a dragging caliper. I drove hard and did several, at speed -stop braking intervals. Parked the truck in my shop, lifted the front and both wheels spun freely. Took it to the dealer, he said brakes were fine, they did an alignment, the caster was off on one side a little and they said the adjustment should help. They blamed the crown of the road. I drove off thinking it was better, but it was not.
What I have noticed is a rattle in the steering wheel when driving at slow speed, turning mostly left, over rough ground. Anyone else noticed or experienced this? I got under the truck and nothing is visibly loose. Anyone know of issues with power steering components?