Assuming this is an automatic;
1. Remove the shifter handle
2. Remove the console just enough to access the lower part of the shifter asembly
3. Working from underneath, remove the rubber plug from the right side of the shifter assembly.
4. Using a rachet and socket, remove the nut from the shifter arm thru the hole underneath.
5. Working from the top, remove the shifter arm, slide the shaft out, replace the bushings, reverse reassembly.