Front wheel bearing roar...check my memory!

They both are hubs but its a different hub. They are not interchangeable
Not on a GMC trailblazer.. note the splines on the 2WD picture I posted. and I was quoting rammjammer that said they were spindles. No reason to make two different versions for 2 and 4 wheel drive, when both can use the same garbage throw away design.
trailblazerrepairsnov2013 038.JPG