Wont shift out of park

That IS for an automatic transmission. Manual transmissions don't have "park", and you can start the engine in any gear. I'm not sure, but I don't think you could get a manual transmission in a Durango in '99. I don't remember ever seeing one.

Older vehicles used a series of metal rods between the shifter on the column and the lever on the side of the transmission. A deteriorated engine mount will let the transmission sit lower. That changes the relationship between the transmission and the shifter linkage and can cause it to be out of adjustment.

Newer vehicles like yours use a cable. Those aren't affected by engine mounts but they are attached to a bracket. If the bolt holding that bracket works loose, the outer casing on the cable will move back and forth a little instead of pushing and pulling on the cable. That is the most common cause of what you're describing.

So it wont come out of park until it runs for a few minutes? This sounds like it may be an issue with the shift-lock, there isnt any other thing that will keep it from shifting from park. When it wont shif out of park, se if the brake lights are working, if not it may be an issue with the brake light switch that activates the lock solenoid for the shifter. If they are working it couldl be the solenoid itself that is sticking.

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