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Does anyone have access to either All Data or Mitchell On Demand?
I'm trying to find a tach lead (engine speed output) from the pcm on my 2006 GMC 2500HD 4x4 Duramax/Allison so I can run it on the dyno prior to modding it.
I've tried the truck forums and haven't gotten any help.
If any of you have access to this information, I would be very thankfull for the help.
on an 04/05 its light blue wire between fuel injector controller and engine controll mod. connector C1
I'd be dumb to believe that GM didn't change anything, so I'd like confirmation for an '06.
And where is the "fuel injector controller" and the "engine control module connector"? FIC is the large harnesses on the engine (that the Edge connects into? The ECMC is the pcm next to the underhood fuse block?