Down to Earth: 2019 GMC Sierra AT4 Arrives as a Mild Trail Upgrade by | Mar 26, 2018 | News —–––<img width="150" height="150" src="https://blog.caranddriver.com/wp-content/uploads/2018/03/2019-GMC-Sierra-1500-Denali-102-150×150.jpg" class="attachment-thumbnail …read more Share this:FacebookTwitterPinterest