It may be a screw that screw's the floor down to the frame, if it is, go under the trailer and you can see where it's coming thru the cross member. Take a pair of vice grips and turn it counter clock wise to tighten it back down. That way you don't have to slice the linoleum floor.
2015 Jay Flight 23 RB
2014 Silverado LT 1500 with a 5.3 V8 Ecotec3