08 dodge charger

Hi - I am Dave, contributing to RepairPal and providing expert advice since 2010. Well, if the transmission is not shifting into Overdrive - it may be that the transmission is not good. It may shift well otherwise, but this is a key functionality of a transmission. Certainly commands and parameters impact overdrive engagement - and testing can dig into each area. But that's what it will take to find out why your transmission is not shifting into overdrive. Reach out to a shop near you -- https://repairpal.com/auto-repair-near-me Click the link to find some shops near you who can help out!