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-   -   V4 mode detonation (https://67-72chevytrucks.com/vboard/showthread.php?t=821291)

superdav 05-01-2021 11:00 AM

V4 mode detonation
 
My wife has a 2018 Silverado that has started making a detonation/preignition knocking when going in and out of V4. Anybody got any tips on this other than delete AFM? I’ve tried high octane it helps but still does it.


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