Is it a 6.2 or the 5.3???

Patriot0331

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Oct 27, 2025
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Dillingham, Alaska
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USMC Veteran 2000-2004
"Steal"ship told me the engine was a 6.2 but the VIN indicates its a 5.3?? I just purchased a used 2020 AT4, fully loaded with 20" rims and everything you can think of as far as comforts in the cab, heated seats, sunroof, rear passenger heated seats, too much to list. Now the question is....how do I physically look to see if my engine is the 6.2 or the 5.3 block? I noticed the 6.2's say 6.2L on the side of the front qtr panels, mine just says AT4. Can anyone help me out on identifying the block?
 

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