OK...so I can clear this up for me...
The instructions posted for the 2006 require the addition of the pin out on the ECM. The instructions for the 2007 are powered by a wire from the original factory plug.
I have a 2006, but am running off of a single wire from the factory plug. Are the settings listed above for the 2007 not compatible with what I am running?
I know this is an old thread. I am going to post to make it clearer for anyone that stumbles across this tread looking for help.
The reason people add a wire and pin to the factory plug is to get a secondary control for fan two.
Some LS1 kits run both fans off the original control wire that was used for the mechanical fan. (tuning required)
Some kits run the first fan off the original wire and the second fan off the newly added pin mentioned above. (tuning required also).
This pin is different for 06 and 07. I dont know about 08 as the only 08 I saw had a thermo non electric clutch fan.
So as far as I know all 06 and 07 wiring should be the same as long as you are NOT running dual fan control.
Feel free to correct me if i am wrong. I plan to add a full mod fan schematic to the shootout site soon.