[HUMTECH]

Im a tech at a dealership and i know parts are quite pricey. In a situation like that i would quote the gm shaft and an aftermarket shaft and let the customer decide. Thing is with an aftermarket shaft you have no warranty on the labor side of things. But the price difference in this case makes it worth it to go aftermarket. I always suggest cardone shafts, they are bigger joints than oem and have had no problems with them. As for the coil in the rear diff, kinda stuck there as its a dealer only part. You can try gmpartsdirect for a price but its still about 4-5 hrs labour as the diff has to come apart to replace it.