Door threshold/sill/trim easy fix

I searched the forum to see if this had been posted before, but didn't find it so here's an easy fix that I came up with...

The door sill trim pieces on all four doors of my DC were loose and would get kicked out of place and rattled. I pulled up the pieces to find that the tabs/ears were broken off of most of the mounting points... like this:


The fix is to use the license plate type inserts in the existing holes. You'll need 14 to do the whole DC (4 for each front door sill and 3 for each back door... maybe less for AC?) and they can be ordered as "1/4 (#14) License Plate Nuts", such as from Amazon here:

$7 Rexka 20 pcs 1/4 (#14) License Plate Emblem Nameplate Bumper Nut Retainer Grommet Compatible with GM 3907444 Chevrolet Colorado Malibu Silverado GMC Canyon Sierra Buick Cadillac

https://www.amazon.com/dp/B08R2WC6BK


You'll need to trim each mounting post down slightly to allow for the thickness of the insert. I trimmed each one down so that it was flush with the support webbing. I used a cutter (pictured), but the plastic is soft so you could probably just use a razor knife and work it by hand. Here is the before:


And after:


Now insert your nylon nuts into the mounting holes. There are four on each front door and three on each back door:


They can be adjusted left/right slightly, so I started at the mating side to make sure it was nice and tight against the kick panel trim, and worked towards the back of the truck from there:


Nice and snug and secure! Hope this helps someone and saves having to buy new trim pieces!

 

Thank you for this, this is a thing that has been driving me crazy for years.

 

Nice Save ! Thank You !

 

I'm bumping this thread just to see if anyone has a better solution.

i'm about to be attacking the interior and this is really annoying on my driver side

 

Three+ years later and they’re still as secure as when installed.

 

Good to hear. I just wanted to double check before I cut off that plastic on the door jamb. Already have enough ordered for all of the door jams, even though the ones on the back are still mostly OK

Great thinking and great solution. Better than the original design

 

Thanks for the tip! Just fixed up my son’s truck using this.

 

It is better than from the factory, IMO

it's like using the stud in a wall versus using a sheet rock anchor

 

This thread should be stickied

 

Added to the mega under interior or something. Paging @shifty`

 

I also think it should be added those plastic "license plate nuts" are useful for a number of body panels/ random tid bits on our trucks.

 

This is an excellent tip.

 

Definitely, I need to figure out some keywords to include with the link to drop it in there. “Door plastic sill plate fix”?

Definitely and I absolutely plan to figure out a way to improve our license plate plastics to use those damn things for my license plate. I intend to work on it after the holidays. Got some good ideas, just need to get my jumper plastics off and take some measurements to figure out which square punch to use to expand the holes. I think the pre-existing holes will make the perfect guide for a square punch.

 

Damn muchos gracias amigo. I bent a few of mine as well

 

Huge thanks to @Teutonics , this worked great on my first gen that I’m restoring.

 

While you have the screws out, a little spray paint on the screw head will spiff it up nicely. Usually they are pretty cruddy. Take a cardboard box and stick the screws in the cardboard so they stand up. Then hit with spray paint. Original was a shade of black, or you can color match to the plastic trim.

 

100%. Screws are ugly as sin, all oxidized. They almost look white, lol! I’ll be spray painting them for sure. Really enjoying the process of restoring the old girl. Bought her new in 2000, 25 years!