I drive a 95 LS and its pretty cold here in Idaho but when i go to warm my car up in the morning it idles at about 2000 RPM's....it goes down after alot of driving but i still think my idle is running way too high...let me know if there is anything i can do to adjust that.......

 

The fast-idle thermo valve (FITV) is underneath the throttle body. It's not really adjustable, but sometimes things come loose inside. Clean it, also clean the idle air control valve (IACV) on the back of the intake manifold.

Then adjust base idle like this:
Warm it up completely, turn off all accessories. Unplug the electrical connection at the IACV, it'll almost want to stall. There's a small screw adjustment in the throttle body, adjust that to about 450 rpm. When you plug the IACV back in, it'll bring the idle back up to 750 or whatever.