5 Liter Eater

I need to find the location of the A/C pressure sensor signal wire on my new (to me) '05. This is for the purpose of porting my wide band signal into HP Tuners through this sensor. While I'm there I may as well tap into the VSS signal wire for my AVIC-D1 install.

I haven't been able to find a CD version of the Helms just yet and would prefer this over the paper manuals. Can anyone tell me the connector and pin locations for these on an '05 PCM?

GMautotech

AC pressure signal - pin 26 orange with black tracer in connector C1(blue)

Manual trans
VSS low - pin 44 purple in C3(gray)
VSS high - pin 45 yellow in C3

Auto trans
VSS signal - - pin 44 orange in C3

5 Liter Eater

Thanks!!!

shopdog

GMautotech gave you the pinouts, but note carefully that these are not PCM pinouts. The C6 doesn't have a PCM. The C6 has an ECM, a TCM, a BCM, etc, etc, etc (21 computers in all), but no PCM. The pinouts are for the ECM.

5 Liter Eater

I knew what he meant. I'm used to calling it a PCM. "220, 221, whatever it takes." - Mr. Mom

What I'm not sure about is which VSS wire to tap into for my AVIC. I'm guessing the low.