Mac, I would call the Zone office and find a dealer that has excellent service. A 2 1/2 year old car should not be having all of the problems at once (unless you are putting ung-dly wear on it) I think that your dealer might be breaking your car while repairing it (hopefully not intentionally.)
JMHO, It happened to me with my last car. I had them fix something 3 times that broke after about 4 years into my purchasing the car. They fixed it and a month later it was broken agin. I found out that each time I brought it in the billedthe warranty (5 Year)for a new part, and I actually paid for it once. I bought the car from a dealership owned by one of my brother's class mates from High School.
I called the zone office and asked for the dealerships in my area and the number of service complaints from each one. Under his breath (they aren't suppose to reccomend one over the other) (and after I told him my story) He sent me to a place where they did things right the first time. I picked my car up (that had been fixed again) and drove it straight to the other dealership. I was Theproblem persisted, I was shown that there was no possible way that they could have replaced the part with a new one. Never went back.
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Post script, oneof the drivers in my office went there 2 years later, they ran him up an $6500 bill on a car worth less than $3000. He didn't ask me, and had to sell the car within 6 months because it never ran right.
I have lots of stories, but I think I made my point...