How do you remove a gear shift knob on a 2004 ford ranger?

It is pressed on. You have to cut it off by cutting hte plastic knob. Once the knob is remove d use a propane touch to heat up the thick nut. Remove the nut with a pair of vise grips. You can now install an after market knob.

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I broke off the knob then I was able to use two wrenches to hold the bottom nut and unscrew the top one. From there I had to put a couple layers of Duct Tape on the shaft before I could put the plastic adapter that holds the new knob on to make sure it didn't move at all. It worked perfectly.