today I pulled the unit out, moved wires abit.. and reinstalled... fixed the delay somehow... works fine now

I ended up getting one for 24 bucks on ebay... works great!

I guess I'll never understand the shift from vacuum-controlled HVAC to electronic stepper-motor types. I went through a few vacuum-controlled panels on my Cavalier, and when it broke, a simple 3-gang fish tank valve and some fish tank air hose temporarily fixed the selector problem...

Meanwhile, in my mom'* (formerly my) '99 Intrigue, I had to replace the HVAC controller under warranty... And then literally TWO DAYS after the warranty on the part expired, the head unit started malfunctioning again. And at over $400 a piece, and the rarity of the part around here, I was glad to pull one from a '98 that was going to the junkyard...

The electronic units are definite fail points; I wish GM went to direct-cable actuation like Japanese cars - incredible amounts of in-between-mode adjustment so you can blend the output how you want it.

As an afterthought - the Intrigue is 400 miles short of the 200,000 mile mark. Guess I shouldn't complain too much?

I just hit the 60k mark, the vacuum controls are pretty strong, the issue was the electronic board that controls the ac button. was easy to replace the whole unit

When I got the car at 41k miles, I found the vacuum T out by the throttle body was split, so I purchased a new one at a local Chevy dealer and vacuum was restored, shifts smooth, no check engine lights.. been a good car

update, AC control unit still working great, very strong vacuum when changing where the air comes out the vents or floor..etc.. you hear the rush of air hissing as you select. also ac button still working fine