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Old 06-29-2020, 12:59 AM   #1
gmc684x4
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Join Date: Jul 2012
Location: Whitehorse yukon
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Ls 4l80E Interchange

I am looking at a 2009 LS 5.3 from a truck
I have 99 van with L31 and a 4l80E Tranny

My question is there any electronic differences for me to use with the 2009 electronics that need to be upgraded for use with the stock 09 ecm ?
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Old 07-01-2020, 08:21 PM   #2
thehata1
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Re: Ls 4l80E Interchange

Hit up Brendan. He know everything! http://www.lt1swap.com/
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Old 07-02-2020, 01:47 AM   #3
gmc684x4
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Location: Whitehorse yukon
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Re: Ls 4l80E Interchange

Thanks that was my next step
Missed out on the 09 but picked up a 4 bolt main vortec with the usual leaky intake
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