Recently I brought my car in for transmission problems. The dealer had replaced the tranny 2 months ago and I was still having troubles with the car sticking into gear. I brought it back last week and the replaced a pressure valve that controlled the shifting. All of that is fine, however, I turned on my air conditioning yesterday and it does not work. It is not like the a/c turns on and it does not get cold, it doesnt turn on at all. I know for a fact that it worked before I brought it in. Could the dealer have done anything to the a/c when they repaired my transmission? Thanks for your help!