Bumper Filler Prep.
I Recently Purchased New,oem Front Gm Fillers. They Come "bare" Rubber Without Primer. Ppg Has A Prep Package (3 Steps) Prior To Priming And Refinsihing. (i Do Not Have Pt # But Can Foward It To You If You Like) After Prep Completed, I Applied 2 Coats Of Dp 90 Black Epoxy Primer. After Flash For 20-30 Min,applied 2 Coats Of Basecoat,followed 25 Min Later With 3 Coats Of Clearcoat. My Friend Had A Local Shop Paint His New Fillers,without Prep Or Primering,they Lasted 1 Year And And Are Peeling... Make Sure The Shop You Choose Follows Paint Manufacture Directions,especially As These Parts Are Not Primed From The Factory.. Best Wishes.