I tried to answer this on a fix-it-yourself site, but I wasn't willing to join just to help. So I'm writing it for Google.
This GE Monogram stainless-steel refrigerator has two doors, each with a ~6' long pipe-like handle running vertically, and fastened to the fridge with four standoffs. After a while these standoffs can come loose, revealing an obvious sheet-metal screw holding it to the fridge, but no obvious way to tighten it.
This post is how to tighten them.
On the underside of each of the standoffs is a hex setscrew, and all four of them must be loosened in order to release the long handle (it has four small posts being held in place by the setscrew). Put the handle aside for a moment.
The standoffs are held to the fridge with a sheet-metal screw, and it can be tightened, being careful to point the setscrew straight down (or else the handle won't seat properly). Make the screwed snug, but not tight - it's possible to strip the screws.
This done, put the long handle back on and tighten each of the setscrews to fasten the handle back in place.
Note: these setscrews were difficult to remove; years of time and gunk and even a bit of rust conspired to hold them in place, and the lousy angle meant there was no easy way to obtain purchase. WD-40 helped a bit.
I fully removed all four of the standoffs and made it a point to lube all the setscrews with WD-40 and run them fully in and out. If I ever have to do this again, I really don't want to struggle this much with them. But once cleaned up, they went back in nicely.