If the system is anything close to my STS the A/C refrigerant low pressure switch is in the line after the expansion orifice, just about at the passenger side of the firewall.

Our systems take a very specific weight of r134a. Not pressure - weight.

 

#29

http://parts.nalleygmc.com/showAsse...e=1023&ukey_model=14465&modelYear=2000&ukey_category=19390&ukey_trimLevel=14416

 

..............#13

Downstream of the expansion orifice. #29 is the high pressure switch

 

Thank you so much. I am gonna get under the hood in the morning and see how hard it will be to get too. I'l let you know.
Do you agree that my problem sounds like the low pressure switch?

 

Most likely.

 

I am guessing my best bet may be to go through the wheel well for this? Otherwise it looks like I have to take out the radiator and everything in front of it. Any thoughts on this?

 

You need to look at the parts diagram again, read your posts and our replies, and work on the correct pressure switch.

The high pressure side is at the compressor discharge; the low pressure side is after the expansion valve/orifice.

 

Depends on which pressure switch you are going after, 29 or 13.