[Keith Seymore]

Under the carpet.

They are used in all the remote areas of the plant where parts are build up and conveyed to the main line, including the seat cushion room, the tire/wheel bay, the axle build areas, the chassis line, body weld shop and trim.

That's why you tend to find them on top of the fuel tank. under the carpet, above the headliner, under the dash, behind the A pillar, or built up into the seat.

The sheets were not "placed" there, as much as they were "left" there. They were supposed to be gathered up and thrown away like extra screws, coffee cups, love notes, etc, but sometimes it was easier (or necessary) to just leave them where they lay.

I've only found one in all my collector vehicles: on top of the fuel tank of my Pontiac Michigan built GTO.

We still use build sheets taped to the vehicle to build products today.