I'm trying to swap the engine wiring harness from a 94 GMC 2500 5.7 automatic into a 93 Chevy 1500 5.7 automatic. Everything looks the same except this one connector group behind the glovebox beside the CPU. Most of the wires are the same, some different. The Chevy has 12 wires and the GMC has 15. I'm hoping I can just repin the Chevy connector onto the GMC harness

This is the Chevy connector


This is the GMC connector

I can get you the wiring diagrams but it would be easier to get the correct harness.

I looked and didn't see one. If you have a link I'm open to just buying one if it'* a direct plug n play

I can probably get one from one of the guys on IATN. Might take a day or to just to locate it.

What information do you need?

This is a stock 93 1500 auto and you need the entire engine harness.

The 5.7 and 4l60e are out of the 94 GMC 2500 that the harness came from. The frame on that truck is beyond repair. I bought a 93 Chevy 1500 with no motor or transmission to put my power train in. The previous owner gutted that harness to run a carb and nonelectric trans. I thought being so close in year and the same generation that everything would be the same. So idk exactly what differences there are or if a 93 harness will have all the same connectors for the 94 engine and transmission. But other than all of that, it'* all stock

I'll see what they say. I'll get back within 24 hours.

A question:

The 1994, because it is a 2500, might have had a 4L80E, not a 4L60E.

The 1993 1500 would have had a 4L60E.

Are you sure the 1994 transmission is a 4L60E?

Not sure if this connector is related.

Did you grab the computers? Here'* the wring diagrams for the 94 2500.