Ac compressor help

[mr tahoe]

yall my ac is driving me nuts i am not getting power to the compressor i have gas in the lines , jumped the compressor and it works , tried changing the relay still nothing all fuses are ok im not sure why its not getting power any pointers would be greatly appreciated

 

[2011SSVHOE]

Try the low pressure cut off switch jump the connection with a paper clip

 

[mr tahoe]

Did that the compressor does kick in when jumped but still dosent cool even when jumped

 

[Mechanic421]

Put a/c gauge on the truck and scan a/c for codes.