Hi there everyone,
So I have now a problem with hocking up my automatic transmission 4L60E I believe, on my 1990 Chevrolet Silverado Z71 5.7 EFI, to my new setup of Vortec conversion withe vortec manifold and CSFI spider injector system and BlackBox PCM. The thing is, my transmission has only one 4 pin connector with 3 wires (one empty), out of the case. And a speed sensor in transfer case (since it is a 4wd vehicle).
So i have a wiring diagram for 1990 Chevy pickup K1500, ECM unit pinout chart for it as well.
I as well have pinout chart for 1996-1999 Vortec BlackBox PCM, Tahoe 5.7 Vortec wiring diagram. (it if the donor I used for my conversion).
Still cannot really be sure, where I should connect the 3 wires from the trans case to. In addition, the 2 wire from the speed sensor, since originally the go to the digital ration adapter.
If anyone has such experience or knowledge, please help and share. Thank you guys, I have been building up this project for three years now, has a lot more to do on it, but at least now the track is ready to run, can’t wait to finally take it out to the road.
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