Mystery Ticking Sound

[cestwick]

Originally posted by KenP:
I do. It's my ventshade expanding. Odd too, because it did the samething on the old H2 and only at the window.

Hey, it's not the mic from OnStar is it? My makes a noise there sometimes, too.

At our dealership we have had several vehicles with automatic climate control the have an inside air temp sensor in the headliner that has a little fan for air flow just above and to the left of the drivers head the can and will make a ticking, buzzing noise if it is bad.