Relocating the fuel filler behind the taillight on a 1973-1991 Chevy or GMC Squarebody — what comes on the cutting template, how to print it so it is the right size, and the full video walkthrough.
The hidden taillight fuel filler kit moves the filler out of the bedside and puts it behind the taillight, so the side of the truck stays clean. The cut is the part that has to be right, and it is made from the printed template rather than by eye.
What is on the template
The printable template sheet carries four pieces, each labelled:
- Driver side inner
- Driver side outer
- Passenger side outer
- Passenger side inner
Only one side gets cut on a given truck, so identify which side your filler is going on and set the other two pieces aside before you start marking anything.
Printing the template
- Print at 100%. Turn off “fit to page” and any scaling in your printer dialog. A template printed at 97% looks fine on paper and cuts a hole that will not line up.
- Measure before you cut. Check the printed sheet against the part itself before it goes anywhere near the truck.
- Cut the pieces out and hold them up to the bedside to confirm the position looks right.
This is a one-way cut into a bedside. The full walkthrough below shows the position and the order of operations — worth twenty minutes before you pick up a cutting tool.
Installation video
The full install walkthrough for the Squarebody taillight fuel filler:
Relocating the filler is usually done alongside stone shields and billet door hardware — those and the rest of the range are in our 73-87 Squarebody truck parts collection.
For any questions or concerns with your install, don’t hesitate to email us at info@lsfab.com
Printable instructions
The illustrated version of this guide, ready to print for the shop.
Chevy square body gas filler taillight hing kit . How much and are they available?
https://lsfab.com/73-87-gmc-chevy-square-body-truck-parts/tail-light-fuel-filler-73-87-gmc-chevy-truck/ and yes they are available. Shipping them daily