slide in campers

just bought a new 05 quad cab heavy duty desiel. on some desiel models there is a note in the glove box saying not recommended for slide in campers. can anyone enlighten me.

[soggysod]

dunno but i ran a slide in in my 2500 gas 4x4 from georgia to newmex, baja, las vegas, lake powell, grand canyon and back with no problems other than gettin it up that high i had to put a ratchett strap from the sway war to the frame to preload the springs just to get it low enough to get it uder it that was when it was stock height!! a dually 4x4 not a chance! i cant imagine what else that could mean though ask the dealer probably too much power if you took off too fast it would leave the slide in behind ha ha dont have to worry about that with powerstrokes though guess thats what you should have gotten!!!