See also:

Vehicle Overview
The GMC Sierra 1500 and Chevrolet Silverado share the same platform, but the GMC product is often positioned as a more upscale offering. Mechanically, the trucks are the same. There might be sligh ...

Navigating an iPod or USB Device on the Main Audio Screen (Vehicles with a Navigation System)
1. Press and release or to select the next or previous track within the selected category. 2. Press and hold or to move quickly through the tracks. 3. Press and release to move up one track w ...

OnStar Personal Identification Number (PIN)
A PIN is needed to access some of the OnStar services, like Remote Door Unlock and Stolen Vehicle Assistance. You will be prompted to change the PIN the first time when speaking with an Advisor. T ...