hello I'm wanting to change the oil in the rear differential of my 2005 Tahoe Z71. There is a torsion bar plus a stabilizer bar that goes across from one side to the other,,,,do these need to be removed to get the cover off? It looks to me like they would have to as there doesn't look like enough room to remove the diff cover. And if so where do I remove them at? Just asking questions so I don't have to do steps backwards. Thank you.