Fuel Injector Wiring

[lb7drty]

Well that surely didn't last long.



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[zamoramax]

Limp mode?

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[lb7drty]

All 3 injector codes came up again, same problem as before.

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[zamoramax]

I'm leaning on ECM.

I had an '02 Avalanche that the ECM ground out on 1 cylinder.

For 3 at once and for it to go away then come back... electronics are finicky and a PITA when they go wrong.

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[lb7drty]

If it's a bad ecm I'm still screwed because the truck is deleted so I wouldn't be able to drive it anyways, and I would lose my EFi Live.

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[lb7drty]

So yesterday I was fed up with the issues and decided at 7 am when I got out of work I was going to do my best to find the issue myself so I didn't have to wait on the dealer and whatnot.

I have figured it out!

1.5 hours outside in 28-degree weather and I got it.

Turned out to be the big connector in the picture here, tested it out 5 times over just to make sure, and every time I'd wiggle it or twist it the truck would start misfiring.

So for the time being I zip tied the connector to help it make a better connection and I haven't had a single issue so far.

Would like to replace the harness myself this spring when it's nicer out.

Found a new GM harness for $750.

I hope this thread will help someone out in the future and I will be sure to update if anything else arises.

I would also like to add I don't know what I would do without this edge CTS2, really helps out.

Would like to upgrade to the CT3.

Highly recommend to anyone!







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