How to replace tranmission shifter linkage or adjust the slack.
First: If you have a little slack in your shifter, it could be the cable has became loose or that the two torque bit screws are loose under your dash. See the pic below for reference.
I know these come out often and cause alot of issues, so if you find these are loose, use some loctite and reinstall so that your PNRD21 are all in the right position.
The bolts mentioned above hold on a bracket which has a simple swivel end to attach the shifter linkage to the transmission.
Second: Replacing the linkage is super easy and maybe a 10-15 min job. All you need is a flat screw driver. If you need to replace the mount on the transmission (see pictures ) you will just need a 14mm socket and ratchet to loosen the two bolts.
To replace, start under the dash and use a screw driver to pry the plastic connector off the swivel mention above. Leave the screws in it.
You are pulling this end off the swivel
Once that is complete, simply pull the linkage holder off the pin (on the floorboard next to the firewall)
Now your linkage should come out of the top of the dash. So now you need to push the grommet in the floorbard out to get it out of the truck.
Then get under the truck and pull the linkage and grommet out of the truck floorboard.
Now the only thing left to do is remove the linkage from the transmission.
One connector goes into a metal bracket to hold it. Notice there are two push in places on the connector where it connects and disconnects. Push them in and slide it out.
The part above connects into this bracket (which I had to replace as well).
The bracket connects to the transmission via the two bolts next to the bellhousing.
Finally, its time to remove the plastice piece of the swivel on the tranmission range sensor.