A/C Keeps Coming On

Just got this car a couple of weeks ago and have a problem with the A/C turning on. It seems to have a mind of it's own and turns on at various times when driving. Even with the heat on full at -10 degrees the A/C comes on. This is with the selector switch set to Dash/Feet position.
After a drive tonight I noticed that the A/C seems to come on when I turn on the High Beam lights. High to Low is okay but Low to High makes the A/C come on !!
Any ideas on a cause would be greatly appreciated.
2003 Monte Carlo SS

FOUND THE PROBLEM: It was the A/C control unit.. A bulb burned out in the unit and I put a used unit in.. Since putting in the other A/C control unit NO MORE PROBLEM!!!!! Weird.....

Just got this car a couple of weeks ago and have a problem with the A/C turning on. It seems to have a mind of it's own and turns on at various times when driving. Even with the heat on full at -10 degrees the A/C comes on. This is with the selector switch set to Dash/Feet position.
After a drive tonight I noticed that the A/C seems to come on when I turn on the High Beam lights. High to Low is okay but Low to High makes the A/C come on !!
Any ideas on a cause would be greatly appreciated.
2003 Monte Carlo SS

FOUND THE PROBLEM: It was the A/C control unit.. A bulb burned out in the unit and I put a used unit in.. Since putting in the other A/C control unit NO MORE PROBLEM!!!!! Weird.....