OEM 2008 GMC Envoy Differential Cover

2008 GMC Envoy Differential Cover Parts and Q&A

• Q: How to replace the rear differential cover and gasket on an 8.0/8.6 inch axle on 2008 GMC Envoy?

  A: Start by raising the vehicle and draining the rear axle prior to replacing the rear axle housing cover and gasket on an 8.0/8.6 inch axle. Use care when removing the rear axle housing cover bolts so the gasket remains intact before extracting the rear axle housing cover while draining the axle lubricant into a proper container. Check the entire rear axle cover gasket surface for any sign of damage before proceeding. Replace the damaged gasket right away or substitute it with a new one. Reusable gaskets require cleaning using acceptable products and the rear axle housing cover along with housing gasket surfaces need cleanup before installation. Set the rear axle housing cover gasket in position along with placing the rear axle housing cover as you fasten the rear axle housing cover bolts . Use a crosswise pattern when tightening the bolts on 8.0 inch axle to 30 N.m (20 lb ft) and use the same pattern for 8.6 inch axle bolts at 25 N.m (18 lb ft). The correct axle lubricant must be added to the rear axle before performing a vehicle lowering procedure.