Sand every inch of the cladding that is to be painted. Use the 200-grit sandpaper with your hand to sand the cladding until it is dull and slightly smoother to the touch. It should not be sanded until it is completely smooth.
Clean the sanded cladding with a wax and grease remover and a microfiber towel to remove all sanding dust and any oily residue from your hands.
Place masking paper and masking tape around the edges of the cladding so that the spray paint won't touch the painted surface of the Avalanche.
Spray one or two thin coats of self-etching primer on the cladding. This allows the paint to adhere to the cladding, causing less peeling or cracking in the future of the paint. Allow fifteen to 20 minutes for the self-etching primer to dry completely.
Paint the cladding using two thin coats of automotive paint. Allow 30 to 60 minutes for each coat to dry thoroughly.
Add two to three coats of clear coat paint, allowing 30 minutes between each coat for drying time. Allow the last coat to dry completely, about one full day, before touching or driving the Avalanche.