As Weeds and Buddy describe above:

The only way to remove the plywood floor in one-piece (or to put the floor back in one piece) in a 47.5-55.5 Suburban is to remove an upper-side metal ledge from one side (about 30 spot welds) and then lift/angle the floor up sideways through the rear door.

The floor cannot drop down because the body-sides turn inwards under the floor. The floor cannot be slid flat out the back (with the rear sill removed) because the rear door opening is too narrow (and, anyways, the wood cannot slide in a flat position through the inner wheel wells). The wood floor has to be angled upward on one side.

Has anyone had first-hand experience removing (or replacing) the plywood floor from these trucks (47.5-55.5 Suburban) in one-piece from the bottom; or, from the top, without removing one metal side-strip from an upper edge?

Been there; tried that; gave up (sadly) and put new linoleum on the floor, in place (after removing the old linoleum, in place). Still feeling a sense of failure since this was the only piece left, in place, on a otherwise totally disassembled suburban.

Tim