Recently took my bone stock 95 coupe in for an oil change and tire rotation. Once I left and got on the highway I noticed that its pulling way to the right. I had this problem in the past but had it fixed years ago. My question is what would a simple tire rotation due to bring the problem back? Tire Pressure? Un-even tire wear?

I couldn't bring the car back becuase they were closing when I picked up the car, I plan on calling the shop that did the work tomorrow but I wanted to know if they should be messing with anything that affects my alignment.

TIA,

SG