The 1947 - Present Chevrolet & GMC Truck Message Board Network

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- - Wiring diagram 1990-91 suburban (https://67-72chevytrucks.com/vboard/showthread.php?t=788562)

kwmech

06-13-2019 09:05 PM

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?

starterman99

06-14-2019 06:36 PM

Re: Wiring diagram 1990-91 suburban

I have a Mitchell wiring diagram. I could scan and send to you if it would help. PM an email if you want it.

kwmech

06-15-2019 02:22 AM

Re: Wiring diagram 1990-91 suburban

PM sent

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