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I would do a change now for sure.
I do not trust GM's extended life predictions very much. Maybe it's different now but the life they said you were supposed to get out of Delco plugs and Dex-Cool was way out to lunch. Then there's the "no service interval for Eaton superchargers" which is laughable, especially when GTP guys change the fluid every 10-15k.
There's more situations like that, I'm sure. I don't think it will be a ton of money but should keep things clean.
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