2019 GMC Sierra AT4's Off-Road Performance Package Actually Adds Power
If you need to get somewhere off the beaten path just that much more quickly than The Other Guy – or maybe you simply want to one-up your neighbor and their new Sierra AT4 – GMC has an answer for you.
Despite being only about three seconds old, The General is already throwing a new package at the 2019 Sierra. Meant to layer on top of the off-road focused AT4 trim, this new option adds even more horses to the hand-of-god 6.2-liter V8.
And, for once, buyers actually save money by selecting the option package. Speed normally costs money – but not this time.
Matthew Guy Dec 18, 201820