Got most of the wiring figured out, but the pinout chart for the 04 GTO only shows one connection (GREEN connector, #33, "High Speed Cooling Fan Relay Control"). I'm using two fans and would like to have them staged on temp. I'm new to the PCM world - any help is appreciated.
Its a pin thats not used from the factory in the 04 GTO PCM.
Blue Conn. Pin #42 : Low Speed cooling fan relay Control
Green Conn. Pin #33: High speed cooling fan relay.
I'm using a PCM from an 04 Yukon with a modified 04 GTO flash, and it is pretty much just hook and go. Works great.
You can wire them with 2 or 3 relays, but that's your choice. I'm actually looking at doing mine with a 3rd relay, even though my 2 are working fine.
__________________ 1995 DCM SS - 6.0L LQ4, intake, Headers, Vogtlands, Billets and some other -ish
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Last edited by GA95DCMSS; 04-19-2009 at 10:18 AM..
LS1Miata-need 04 GTO cooling fan relay pinouts 
