Don't go to a dealer. Go to a tire shop. They will know more about the problem and will be far more willing to tell you what is actually wrong. You may just need a new sensor battery.
Then I swore myself I'll never go back to Rick Case again for regular maintenance (I'm going to have to find a good mechanic though, which is kind of tricky, but I'll do it out of my hatred of Rick Case). I had a horrible buying experience with them too (their finance guy trying to sell me $2600 'umbrella' insurance package, which when I pressed him, didn't specify anything it covers. I didn't end up taking it and the finance guy looked pissed (but I didn't care because the amount of money, $2600, is non-negligible).