"If you can"..deal with the Mgr rather then the sales guy/gal. I used to belong to a key club which allowed me to deal directly with the mgr. I was able to walk in and deal directly with the Manager, cutting out the salesman's commission. That was part of the deal. $cheap deal for $29. a year. and lesson learned.

I now also have a buddy that can always give me a GM family and friends discount whenever I want. So then I get the price at one dealer mgr vs my buddy's.
Almost always the discount wins, depending on the price of the vehicle.