Where is the filler plug for rear differential on a 2003 g m c envoy?

The filler plug for the rear differential on a 2003 GMC Envoy is located on the rear differential housing. It is typically situated on the driver's side, near the top of the differential case. You may need a socket wrench to remove it, and it's advisable to check the fluid level when the vehicle is on a level surface. Always ensure to use the correct type of differential fluid as specified in the owner's manual.