Worked on this Avalanche this weekend. Just needed a basic wash, wax and interior clean. The kicker was the black plastic exterior pieces. Avalanches are common for having all the black plastic panels fade severly after a few years. While they are under warrenty Chevrolet offers a product that you apply every 3 months that prolongs the fading but never really worked.
I have a product that is oil based that is meant to be put on in a semi thick coat and left to soak into the plastics. Pending on how bad the plastic is...it could take upwards of 3-4 coats to get a good original black look. But this can take a few days to let each coat dry in completely. Since the weather was not great this weekend this thing only got two coats, since its preferred to be done on really sunny and hot days so the stuff can bake into the plastic to speed up the drying time.
TBW w/ P21 Body Shampoo and Adams Car Wash Mixed
Sealed w/ BFWD
Interior Panels Cleaned and Treated w/ 1z
Windows w/ Stoners w/ Rain-x
Plastics w/ Restore Refinish
Rear Plastic Panels: