OER Parts offers a wide selection of Sill Plates for your 1990 Chevrolet Blazer. OER Parts offers 1990 Chevrolet Blazer 2 Door Door Sill Plates, 1990 Chevrolet Blazer 4 Door Door Sill Plate, 1990 Chevrolet Blazer Billet Sill Plates, 1990 Chevrolet Blazer ABS Sill Plates, 1990 Chevrolet Blazer Chrome Sill Plates, 1990 Chevrolet Blazer Aluminum Sill Plates, 1990 Chevrolet Blazer Carbon Fiber Sill Plates, and 1990 Chevrolet Blazer Sill Plate Screw Set.