I just had a quick question for anyone w/ GMPP Stage 3. So everyone knows that the pcm disables AC. But my question is that you know how the fans come on immediately when you turn your ac on. I mean whenever my car is at idle in a line at the bank or something for a while and starts to get hot, I turn the ac on for a little bit just to get the fans to cool the car down.

So with the stage 3 pcm in, when you push the ac button, do the fans still come on, and the ac just stays off? Or do the fans stay off too?

 

theres a flash u can do to get the ac back on

 

Actually, the operation of the cooling fans in regard to the A/C with OEM or Stage 2 re-flash monitor A/C refigerant pressure and turn on the cooling fans when A/C operating pressue reach a pre-determined pressure. It has nothing to do with pushing the A/C button except that after you push the A/C button and the compressor starts to opeate then the pressure in the A/C system starts to rise.

Check out my earlier post on enabling A/C with GMPP stage 3 at: https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/gmpp-stage-3-c-76479/

 

So I guess you have to manually cycle your A\C if your in traffic or a long drive right?

 

i'm guessing it juat disables the compressor clutch

 

No, it is not necessary to cycle A/C on and off. This GM system does not cycle the compressor on and off in normal operation.

 

Ok great news! Thanks