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Old 08-26-2009, 10:00 PM   #1
GMC70c20
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ls wire harness

I just got a 6.0 with the factory wire harness and ecm. I didnt realize how much wire harnesses there is on one of those things. Is there a wire harness made that I could use with the factory ecm that would be just the engine controls and nothing else?
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Old 08-27-2009, 03:54 PM   #2
POPO1984
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Re: ls wire harness

you can send the harness you have to nelson performance in san antonio and they will remove all uneccesary thing. makes it supper clean and easy
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Old 08-28-2009, 05:11 PM   #3
glock35ipsc
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Re: ls wire harness

Jesse at www.wait4meperformance.com can rework your existing harness to a stand alone, remove all the unneeded wiring and connections, and tune the PCM to delete all the unneeded sensors and remove VATS for $360. Just got mine back, about 1 week turnaround. I've used Jesse for several years now for tunes, never a problem. About a dozen wires to connect, everything else is plug-n-play.
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Old 08-28-2009, 08:58 PM   #4
GMC70c20
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Re: ls wire harness

and thats to run the factory injection right?
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Old 08-28-2009, 09:11 PM   #5
POPO1984
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Re: ls wire harness

yes factory injection they can also remove o2 sensors for cat deletes and other things just tell them what you want or ask what they suggest. i have used bothe pcm4less and nelson with success
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Old 08-28-2009, 10:49 PM   #6
glock35ipsc
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Re: ls wire harness

The pic I posted is the original harness from the 2006 Silverado donor truck that has been reworked. Things that are not needed for a stand alone swap operation is removed, like the rear O2 sensors, EVAP, EGR (if equipped), etc.

And yes, I am running the original truck injection setup, for now. The engine will go in my 85 just as it came out of the 2006, just prettier!!



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1970 Chevy K10 LWB "Goldie" 350/TH350 next project!!
1981 Chevy C10 LWB 355/TH350 - My son's truck

LS SWAP FORUM! Tons of LS swap info here!
PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET!
CLICK HERE FOR THE FAQ INDEX by KRUE
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Old 09-19-2009, 02:41 AM   #7
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Re: ls wire harness

WOW thats nice!!!!!!!!!!!!!!!!!!!!!!!!
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