Engine Wiring Harness (2004 Colorado 3.5L 2WD)

elrifas · Aug 2, 2025

Hello,

Looking into getting a full replacement of my truck's engine harness. (2004 Colorado 3.5L 2WD)

Can't find the appropriate part number anywhere, i was only able to find part # GM 15198194 but it states BRACKET and it's also discontinued so I'm not too confident.

Any suggestions on sourcing one or finding the correct part#?

Thanks in advance

MikeHawk808 · Aug 2, 2025

you can try google-ing engine harness for our trucks. you can find used ones on Ebay or if you looking for a brand new now there is a company that makes them I just can't remember the name off the top of my head...🤙🏾

elrifas · Aug 4, 2025

I saw only 1 available on eBay but didn't look too good. I'm leaning more towards new but i can't find anything. That'd be perfect to find about that company you're mentioning just not getting lucky finding it either

MikeHawk808 · Aug 4, 2025

I dont really need one , but I wouldn't mind a brand new onion, and I have never seen a 355 with tucked in wires yet

Engine Wiring Harness (2004 Colorado 3.5L 2WD)

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