Jose41, just like JoSHN said, check for a worn out tie rod end. I had a pick-up from anouther manufactur for years. It did just what you are describing. But would clear up for awhile with new tires. I think the stablizer was replace twice, fornt end re-alligned many times, all by places that sold tires. Finally I took it to a shop that just did front end and drive line work. They found the problem right away, totally worn out tie rod end. In my opinion, never have front end work done by a place that sells tires.