5.3 to ls1 swap ?s - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dkauffman05 · 08-07-2013, 09:36 PM

I have a 2000 5.3 ,harness and PCM in my truck that's crammed and tuned. I bought a 2002 ls1 and PCM . I sold my 5.3 with tuned PCM so I want to install the ls1 in my truck but have read mixed info on the pinout differences . I would lie to keep my harness since its custom to my engine bay. What issues besides the injector connectors am I going to run into keeping my vortec harness with ls1 PCM ? Both are red blue connectors.
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08-07-2013, 09:36 PM	#1
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 417	5.3 to ls1 swap ?s I have a 2000 5.3 ,harness and PCM in my truck that's crammed and tuned. I bought a 2002 ls1 and PCM . I sold my 5.3 with tuned PCM so I want to install the ls1 in my truck but have read mixed info on the pinout differences . I would lie to keep my harness since its custom to my engine bay. What issues besides the injector connectors am I going to run into keeping my vortec harness with ls1 PCM ? Both are red blue connectors. Posted via Mobile Device



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