It’s 2017 & Chevy still sells the Express.
They killed the 1500 in 2014, they only offer the 2500 & 3500 now. The 4.8L Vortec is standard with the option of the 6.0L Vortec & the 2.8L Duramax. The 6spd auto is standard, with a 8spd (only with the Duramax).
Ford also still sells the E-series, but only as a cutaway.