In general... are there any problems threading or otherwise when switching out knobs? I've thought about it but haven;t really seen anything 'worthy' of the change. Then again, I haven't been actively searching.. I guess I should start.
Remove any necessary console parts for access to shift lever assembly and shifter cables.
Shift transmission into PARK.
Disconnect the transmission shift cable at shift lever and shifter assembly bracket.
Remove the shift cable retainer from the notch in the shifter assembly.
Disengage all wiring connectors from the shifter assembly.
Remove all nuts holding the shifter assembly to the floor pan.
Remove the shifter assembly from the vehicle.