Hello,
You can go from drive to overdrive and vice versa, while the vehicle is moving, safely.
This is part of standard operations for the vehicle.
When you are going up steep grade and vehicle seems to be struggling you can take it out of overdrive and put it in drive. This will allow the transmission to go to a lower gear and provide more power.
I have attached the standard operations for the gear selector (look below)
Please let me know of any questions.
Thank you.
https://www.2carpros.com/articles/how-to-service-an-automatic-transmission
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Friday, October 8th, 2021 AT 2:00 PM