How do I fix my shifter

My truck will shift manually but the shifter in the steering column won't shift the truck into gear

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Kelly Powell I am confused "will shift manually " "shifter in the steering column won't shift " reads like it shifts but it does not shift. Okay so its an F-150 with a Manual or Automatic Transmission ( I bet it's automatic ;-) What happens when you move your shifter? Do you feel any resistance etc.?

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Its an automatic I've had to get underneath the truck to shift it there's no resistance on the shifter the previous owner said the truck needed a shift pin that the old one broke on him twice

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