Is a slider hitch required on GM short beds?

We towed for with a GMC short bed and had a slider hitch. The dealer suggested it just in case. I used it more than once, I couldn't make a sharp turn in the nonslide position. I would say the sharpest turn without sliding was less than a 90. The truck was a 2005 short bed extended cab. I would get the slider for those just in case day's.

Depends.
Is it a 2500HD or 3500? They have the 6ft 6" bed.
If its a short bed 1500 they would have to have a slider for sure.
Now depends on what camper you buy? Our Heartland has rounded corners that allow 88 degree turns without a slider. Plus most these days come with an extended pin box. That move's it back even more.

My 6'6" bed Chevy does not even come close to hitting I can get into the side of the camper before the front corner was to hit. Now towing my sons 5th wheel without a extended pin hitch It will get close to hitting and sure I could hit. But would have to jack knife it to hit then.

I mounted a manual slider in my truck before we bought ours. And have never used it with our camper. If it were not for having to tow other campers when the flood waters come up. I would not even have one.

I know this did not give you a for sure answer, but most 6ft 6" beds can get by without one. Then again you may need it first trip. Let everyone know what camper and stuff bet you can get a better answer then.

Pete