[crd370]

If the problems are not related, then someone is playing a practical joke on more than one person. My 2003 GMC Envoy is doing the exact same thing. Two weeks ago we replaced the battery and the next day no air through the dash vents. Theres air everywhere else. No matter what I have done or been told to try, nothing has worked. I carried it to a local mechanic, two hours later they called me and told me I had to take it to a GM mechanic. This scares me. Been driving my hubby's truck( he's taking it in stride) so I won't melt. I don't know where you guys are, but the temp here yesterday was over 100 degrees!!!