Yep, I did say that(in a different thread), and here's the thread Ryan's referring to: freon servicing port I would replace that external temp sensor first(if you haven't already done so) then check the A/C system for trouble codes: 97-03 FAQ Scroll down to AustinGTP's post at the bottom.

Here's a parts listing for the various actuators, from AC Delco's site: A/C Parts

If the link doesn't work, you can look it up here: Parts Info