OK, looks like the first step is rebooting the climate control module.
If you go here:http://iihs.net/fsm/?dir=332
this will take you to the online service manual. Download the PDF,
and on page 2, it walks you through the module reboot.
After that, we're talking about whipping out the VOM and doing
some electrical sleuthing, so hopefully the reboot will do the deed.
And, yes, those service manuals are for a 2005 - if you have the
2008 manual, you'll certainly want to use that instead.