I bought an 05 Grand Cherokee from Wilson. Thanks to my salesman, Ken Johnson, the buying part went surprisingly well. Even though I was buying a 13-year old car and not a new one, he went the extra mile to be helpful and was part of the reason I bought from Wilson instead of their neighbor.
Unfortunately, that was the end of the happy phase. During negotiations we signed a document stating that Wilson would fix a minor issue with one of the doors. There were other issues with the car but none seemed major and I knew I was buying a used car, so the door was the only thing they were supposed to fix at no charge. I took it back in for the door repair and to have them check the suspension, which I wanted to take care of while I still had their 50/50 warranty. One of the sales managers decided not to honor the signed form about fixing the door and would not authorize the work. After all, my check had already cleared. Right?
They (supposedly) checked the suspension and couldn't find anything wrong. Apparently, they don't like to do repairs when the customer will only pay half the bill. I took it to the folks who have been working on my cars for a few years to check out. They ended up replacing the left & right upper control arms and the front strut assemblies.
They also said that it was definitely a potential safety issue.
So, go see Ken Johnson, he'll treat you right. Wison service department? Good luck!