See also:

Overview
The GMC Sierra All Terrain HD concept is an exploration of heavy-duty truck capability combined with greater off-road versatility. It is highlighted by a bold exterior design, enhanced all-terrain ...

Clock
To set the time: 1. Press the CONFIG button to enter the menu options. Turn the TUNE/MENU knob to scroll through the available setup features. Press the TUNE/MENU knob or press the Time screen bu ...

Cargo Management System
This vehicle has a cargo management system located in the rear. To remove the cargo management cover: 1. Open the cover. It remains open when lifted. 2. Pull the cover up making sure to unhook th ...