A slideshow of photos taken at I-CAR’s booth at SEMA 2018 is at the bottom of an article containing information about AHSS content in 2019/2020 vehicles. These photos highlight sections of the 2019 Silverado body, showing several parts labeled with strength levels and grade. You can see several 780MPa and 980MPa steel parts, as well as some UHSS parts. GMs strategy on their new truck is to use 6XXX aluminum on the door skin paired with 5XXX on the inner.
See the slideshow at the bottom of article from Repairer Driven News .