[ragman60]

My 1999 Buick Regal GL has 70,000 miles and I was checking the battery connections and disconnected to clean some corrosion from connection. Evidently the WRONG thing to have done.The next morning driving to work the two driver side vents had warm air coming out and I thought the air conditioning had gone out. When I started home in the afternoon I stuck my hand to the middle passenger side to check them and cold air was coming out. Great I have air conditioning! I checked both vents when I got home and cold air was coming out from both passenger vents.

I have the Automatic Temperature Control and I checked the Dual Control and it is off. Fan works correctly on manual and automatic. Manual with fan gets same thing "cold passenger and warm driver side". I have checked all fuses inside and under hood and all are good. The larger cooling fan fuses or relays under the hood I could not check.

Does anyone have an idea what to do? I think it is something simple and don't want to take to a Buick Dealer and pay an arm and leg. Thanks for your help.