Mine I had to take door and frame off then take out wooden floor which is under the rug hiding it well thats how I had to install my new ones from the manual ones I had.
Well yesterday was very information for me. My brother helped and we discovered that the bolts are welded into place and what I thought was a nut that had come loose and was missing, was actually the bolt that broke off.
We had to cut the rubber mat and then drill a hole through the top and through the stairs to add another bolt.
Needless to say I am looking into getting stair supports to prevent this from happening again.
Camping world has one for around 17 dollars that I think I am going to get.
Thanks for the response though.
I figured that I would have to take to door off but did not want to mess with the seal around it.
I has somewhat of a similar problem with the manual step on my Coachmen. The TT came with a single slide out step, and with the upgrade to 225/75-15 tires, the first step was a little too much for the DW. I didn't like the idea of a portable step, too much extra to pack away, so I picked up a set of Hickory Springs double manual steps. Of course, they were not exactly the same width as the oem unit, and when I tried to unbolt the oem unit, the bolts just spun in the frame, so I had to cut them off. And, the oem steps were welded to two angle supports that were tack welded to the frame, so I had to cut them off too, because the new steps were wider than the brackets were spaced. I mounted the new Hickory frame brackets to the frame, and drilled up through the frame, and into the door threshold, so I could use two 4" carriage bolts with large flat washers to support the front of the mounting brackets. I sealed everything, and is was pretty solid, but with the extra step, and the extra leverage it put on the mounts, I wanted additional support for my 270 lb load on them. I picked up a set of the Stabil-Step Jacks from CampingWorld, and they worked well on the first step, but I wanted something easier to set up and use. I bolted a piece of PT 2x6 to the underside of the bottom step, and made some slide in retainer brackets on the bottom of it for the square plate of the step jack to slide into before folding the lower step down. Now I slide the two jacks into the retaining brackets, and then rotate the step down and adjust the two jacks to support the step. The lower step is stable, and my weight doesn't flex the mounting system. Even the DW feels better using them.