If the belt is not breaking but just coming off, then more then likely your tensioner is not holding it tight enough.
Here is a guide that will help with this:
https://www.2carpros.com/articles/serpentine-belt-tensioner-replacement
If the belt is breaking then that is a different issue but below you will find the process from the manual on replace the tensioner. I would go ahead and put a new belt on as well just to be sure due to having it off anyway.
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Feb 7, 2021 at 5:50 PM