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Engine Harness Compatibility

nnbs_lozoya

By nnbs_lozoya
August 2, 2023 in 1999-2013 Silverado 1500 & Sierra 1500

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nnbs_lozoya

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nnbs_lozoya

Posted August 2, 2023

Posted August 2, 2023

So I recent bought a 2009 Sierra with the 5.3 LC9, the only issue wrong with it is that it’s going to need a complete engine harness as rats have torn through it, will a harness from another Sierra fit? Or does it have to be specific, I found one on eBay, only difference that it was meant for a 5.3 LMG, mine has the LC9, both trucks are 4x4

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CamGTP

Posted August 3, 2023

Posted August 3, 2023

If both trucks don't have VVT, then they should be the same harness.

The main difference between those two engines is usually just iron block to aluminum block and if they ran flex fuel.

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