I just started having an AC issues with my 2007 Acadia. Started last week when the AC seemed to 'lag' and not quite keep up in mid 70's. Teh I noticed the snowflake light blink and shut of. In a few minutes it came back on and teh Ac went back to normal but was never able to blow as cold as before. Now it's just blowing warm air, but the light stays on. Suspecting a freon leak. Into the shop Monday, too late to do anything today. Of course, hottest day of teh year.