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2014 Sierra 4.3 LV3 to 5.3 or 6.2?

VicSier43
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VicSier43 New Member

VicSier43

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Hello to all, I was wondering if there is a route to swap the 4.3 ecotec to a 5.3 even a 6.2. From what I know I need Harness , cooler lines , transmission crossmemeber, and computer programming.

Any one have luck with computer programming to make the swap a success?  It seems as this is the difficult part of the swap. Thanks in advance!

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