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Service guy told me today that Chevy has a service they offer to clean the carbon build up and it's recommended to LT4 owners at 45k miles.
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Current: 2019 ZL1 1LE A10
Mods: MPS4s Tires | Borla Atak | CF Steering Wheel
Previous: 2018 ZL1 1LE M6 | 2017 Z06 Z07 M7 | 2017 GS A8 | 2015 ZL1 M6 | 2013 GT500 |