2012 Sierra 5.3L durability expectations

deucestabbings

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Does anyone have any sustained experience with a 2012 Sierra SLT 5.3 engine above 200k miles? My father is offering to sell me his for a loss.

it has seen some light hauling, 95% interstate miles, 100% dealer maintained with no issues, regular oil changes, trans flush every 100k, 203k miles, no oil consumption issues (verified by dealer also). The man doesn't miss much of anything regarding maintenance/issues with engines, so I can trust his word. He takes GMC/Chevy trucks like this to 300k+ miles all the time, so this isn't a fluke for him. I've also seen it recently and it purrs like day one. been driven in SC/NC it's whole life, no off-road business, etc.

Have I lost my mind to consider buying this for $6k??? and continuing the standard of maintenance my father set, what kind of ballpark mileage can I expect out of this series of engine with minimal light to moderate hauling, 15k year, 60/40 hwy miles, light traffic? I know the older versions of the 5.3 were rock solid. I just don't wanna get involved in this thing unless I have a reasonable shot at topping 300k miles.

thanks for all the help
 
Did you buy it? I just bought a 2012 so I hope it lasts to 200+.
 


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