It seems that I am having the same problem as Xeno41. I have a 95 GMC Sonoma with a 2.2L. There is no power to the ac compressor and I can't figure out where the low pressure sensor is so that I can jump it. The manual says that it is located on the evaporator and I located it on my wifes 99 Blazer with the 4.3L engine but the 2.2L ac is different. I looked and felt all around the evaporator and the hose coming from the condensor but see nothing.
Can anyone help with this mystery????????