4.8 swap into a 1950 GMC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

suburban99 · 01-23-2022, 12:28 PM

Hey all.
This is my third swap so I am by no means an expert, but i have a basic understanding of how the wiring should go. Bought a 4.8, 4l60E from a guy who was moving..Usually I buy the whole truck and remove engine/harness myself.
Anyway the harness was in a bucket, I got all the bits (tac/pedal/ecm etc).
I need a picture of the location of the plugs/sensors and the wire colors if possible. I could wire by wire off the pcm but trying to save time. If anyone has one it would help. I have already removed what I don't need from the harness..Thanks

suburban99 · 01-23-2022, 01:28 PM

I think I have it mostly figured out except this one plug. 16 pins
1 wire goes to alternator
4 wires go to 2 pin plugs that I have no idea what for.

**jweb** · 01-24-2022, 04:31 PM

Should be able to find what you need here
https://lt1swap.com/2000harness.htm

suburban99 · 01-24-2022, 04:55 PM

Quote:

Originally Posted by jweb

Should be able to find what you need here
https://lt1swap.com/2000harness.htm

Yeah Jweb, I used lt1swap as my primary resource for the other 2 I did. I guess I just cut that plug off..(according to Lt1swap)..this one is DBW others have been DBC and I don't remember that plug.

rodstored-72 · 01-24-2022, 07:32 PM

i have a stock 4.8 2013 engine with uncut harness i will see if i can find the plug & tell what it is too.. i THINK it is for the data & "periphreals"... not sure though.

01-23-2022, 12:28 PM	#1
suburban99 Registered User Join Date: May 2014 Location: Mission BC Posts: 452	4.8 swap into a 1950 GMC Hey all. This is my third swap so I am by no means an expert, but i have a basic understanding of how the wiring should go. Bought a 4.8, 4l60E from a guy who was moving..Usually I buy the whole truck and remove engine/harness myself. Anyway the harness was in a bucket, I got all the bits (tac/pedal/ecm etc). I need a picture of the location of the plugs/sensors and the wire colors if possible. I could wire by wire off the pcm but trying to save time. If anyone has one it would help. I have already removed what I don't need from the harness..Thanks __________________ 1962 C10 Longbox LS 5.3 4L60E----Sold$$ 2014 Ram 4x4 3500 Laramie Diesel..Momma's truck 2015 Ram 4x4 1500 1997 Boxster. 1972 K10 Custom Deluxe LS 6.0 1950 GMC 3100 S10 & LS swapped

01-23-2022, 01:28 PM	#2
suburban99 Registered User Join Date: May 2014 Location: Mission BC Posts: 452	Re: 4.8 swap into a 1950 GMC I think I have it mostly figured out except this one plug. 16 pins 1 wire goes to alternator 4 wires go to 2 pin plugs that I have no idea what for. Attached Images __________________ 1962 C10 Longbox LS 5.3 4L60E----Sold$$ 2014 Ram 4x4 3500 Laramie Diesel..Momma's truck 2015 Ram 4x4 1500 1997 Boxster. 1972 K10 Custom Deluxe LS 6.0 1950 GMC 3100 S10 & LS swapped

01-24-2022, 04:31 PM	#3
jweb Senior Member Join Date: Apr 2010 Location: Oregon Posts: 1,208	Re: 4.8 swap into a 1950 GMC Should be able to find what you need here https://lt1swap.com/2000harness.htm __________________ 1951 Truck, LS1/4L60 1964 Suburban, current project 2014 Silverado daily driver 1953 Westerner "canned ham" trailer, rebuilt 1974 Prowler trailer, rebuilt

01-24-2022, 07:32 PM	#5
rodstored-72 chevy truck fan Join Date: Mar 2005 Location: Gilbert, arizona 85298 Posts: 2,009	Re: 4.8 swap into a 1950 GMC i have a stock 4.8 2013 engine with uncut harness i will see if i can find the plug & tell what it is too.. i THINK it is for the data & "periphreals"... not sure though.



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