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**kwmech** · 06-13-2019, 09:05 PM

Finishing up the wiring on my 4L80e conversion and have to wire the controller into the factory ECM. Trying to figure out which wires are which. Any one have a diagram of the pigtails going into the ECM or a whole harness pic?

06-13-2019, 09:05 PM	#1
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,393	Wiring diagram 1990-91 suburban Finishing up the wiring on my 4L80e conversion and have to wire the controller into the factory ECM. Trying to figure out which wires are which. Any one have a diagram of the pigtails going into the ECM or a whole harness pic?