What rear end can I swap? Mine blew up.

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! If your rear end gave up the ghost, you're likely looking at a swap with another unit that matches your GT4 (3.73 ratio) and G80 (locking differential) codes. Compatible rear ends would come from other Avalanches, Silverados, or Sierras from around 2007-2013 with the same RPO codes. Just make sure the donor truck has the same axle ratio and G80 locker to avoid any surprises down the road. If you need any further advice or if you'd like any help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554!