The Lippert Manual Pull-Out Step for RV's, # LC432682, as shown in the attached product review video, has a center-on-center hole measurement of 7" and 24". view full answer...
Technically, anything is possible with a bit of redneck engineering, but in this case I would recommend at least getting some sort of solid steel tubing that you could drill holes in to take up the gap left between the bumper and the brackets for the 24x60 etrailer Cargo Carrier for RV Bumper # e99049.
Using just washers would most likely point too much pressure at one point and fail. Since you're not using the product as intended there wouldn't be a warranty to fall back on if anything... view full answer...
The Adco SFS AquaShed Cover for SUVs - 196" Long Item # 290-12285 is not compatible for your 2004 GMC Yukon XL. I recommend the Covercraft Polycotton Custom-Fit Indoor Vehicle Cover - Gray Item # C15792PD view full answer...