At the least, you're not going to left sitting on the side of the road. Get some of the CLEAR plastic filters, so you can check easy and replace when needed.
First things first.....
Got into the EOL PO installed non-functional manual tailgate glass crank today.. Interesting..
basically the motor had been removed. the housing for the star gear was intact and in good condition, as were the regulators for the tailgate glass.. Found the tailgate glass clips, got it out of the way, and removed the regulator. Once the regulator was out I snapped some pics of the 3/8 socket that is attached to the drive for the regulator star gear.. Placed that on a bench, and returned to the truck and pic'd the 3/8 drive (this is what was EOL badly worn down) that had been welded to the threaded bolt, extended into the tailgate, and welded to the broken off handle...
I decided for now that I'm keeping the 3/8 drive ... to make it work, I cut the bolt in half that was the crank 'shaft' for the 3/8 drive.. once I got that out, I drilled the hole out a bit that the 'shaft' had thru into the guts of the tailgate.. Got the regulators reinstalled, installed another tailgate handle I had, and inserted a 3/8 drive I had in the hole of the tailgate and into the 3/8 socket still attached to the star gear for the regulators..
WORKS!! Rolls up and down with no issues... when not in use, just remove the 3/8 ratchet and shaft, and install the grommet as a plug...
The remaining issue is the window regulators are spring driven to go down easily... the old mechanism had use a threaded bolt with nuts on the inside and outside of the tailgate, and large washers snugged up against the shell of the tailgate to prohibit the tailgate glass from just going down over rough terrain or extended drives... Gott figure that out... but I like I can operate the tailgate again.. for now... Hopefully the pics tell the story better then me..