I have an 07 Chevy equinox lt 2wd and cannot find a bolt for the rear hub. Not the stud, the hub mounting bolt. I am in the process of replacing the rear hub/bearing assembly and, while taking the 4 mounting bolts out, broke one off. I assume if I can take the other 3 out, the bearing will come right out with a bearing puller tool since it looks like the bolt only threads into the bearing itself and not the spindle. All search results end up showing me the front bolt which is dorman 517-503, a 15 mm head (The front bearing/hub assembly is held by 3 bolts). I need a rear hub/bearing mounting bolt, which there are 4 of, and have a 13 mm head. If someone could find the part number for this bolt it would be greatly appreciated. Also any advice on getting the other 3 bolts out without snapping them off would be helpful.

I looked all over and found the same as you. Either front-hub bolts listed or no reference to rear hub bolts at all. I found one site that actually showed your bolts in a diagram, but didn't list a part or number for them. It'* probably a more generic part. I'd say you should take one of your unbroken ones to a Napa or a dealership (or worst case: salvage yard) and get four more per hub you are replacing. Make sure they are the proper grade bolts for holding a hub, note home-depot zinc coated etc. Speaking of unbroken ones . . .

Penetrating oil and time. Maybe apply a bunch of heat if you are able and know your way around doing such a thing. Beware of accidentally damaging other stuff with your heat. Sometimes a combination of the above plus some hammer time with a 2+ pound sledge helps as well. If the vehicle has lived in a salt state you'll likely have to do more oil+time+heat+hammer than non-salty. Let us know if you need more specifics on oil/time/heat/hammer activities.

Often GM on their microfiche will find bolt, and say "yes" how many do you need LOL..

with heat, and lots of penetrating oil I finall got the rest of them out. I went to my local Chevy dealer and aside from being semi rude, they wanted $28 per bolt. Needless to say I did not pay that and went to a local bolt/fastener shop and bought four bolts, same grade, same length and size with a slightly larger head. Total cost $9. Fit perfectly and have held up just fine. Thanks for the help.

Great news, thanks for letting us know how it went!