HVAC question

[K85 Octane]

I have AC and heater. Nothing works, not even the fan. Might be my wiring, which is very possible. But, I also have no freon in the system. Does the pressure sensor shut down everything or just the AC?

Just wondering if all I need is freon or re-do my wiring.

Thanks

 

[4xcrazy]

Check the ground wire that connects to the blower motor, the one in my 2wd Burb didn't work either, was just a bad ground. Found this out after searching over a few things, removed the motor and bench tested it only to fid it did work, just wasn't getting any power.

The low pressure switch for the ac system only signals the compressor.

 

[K85 Octane]

damn, I was worried about that. The system was working until I rewired everything with the EZ Kit and emptied the freon, now it doesn't work. Was hoping it was just the freon. The entire system was left untouched except the wires behind the dash. Not much there, not sure how I screwed up, but at least it's not important.