Suburban 99 Vortec 7400 swap 0411 Swap Ac not working (RESOLVE)

[ali32109]

Hello,

I'm facing issue where ac compressor don't get any signal. I double check wiring all seem to be right. ac fan working ac doors also working but only compressor not kicking on.

Any suggestion to find out what could be wrong?

attached my Hp tuner file, just change file extension to hpt

 

[ali32109]

I found the problem, i was selecting wrong a/c setting, i change Type Fitted to (Analog Cyclin) and it start working.

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[Safuez]

I found the problem, i was selecting wrong a/c setting, i change Type Fitted to (Analog Cyclin) and it start working.

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weird im having similar issues, fan blows compressor never kicks on, ac type is also analog cycling ( could be wrong for my truck idk )
dunno the difference between cycling and non sooo

 

[konstantindieselz]

- Check relays and fuses.
- Inspect pressure switches.
- Test for voltage at the compressor.
- Look for DTCs in the control module.
- Re-examine wiring and connectors.
- Test the compressor clutch manually.
- Check refrigerant levels.
- Inspect temperature sensors.

If you go through these steps and still have trouble, let me know what you find, and we can dig deeper!