2001 Chevy Pickup-A/C prob

I have no power going to the Low Pressure switch, all fuses and relays ok. What else am I missing? And also have no power going to the High Pressure swicht on the back of the compreesor. Giving me a headache....Thanks

Power to and through A/C push button switch. lt. green wire. Power to and through A/C compressor relay(underhood fuse block).

Think I'm having the same problem---any help appreciated.

Check for power at the A/C push botton switch.