This GMC Sierra full-size pickup was restyled, inside and out, and boasted roomier cabins, greater maximum towing capacity and higher gas mileage. For 2008, XM Satellite Radio is now standard, and light-duty Sierras get a trailer brake controller that aids drivers when towing. , Rancho shocks, a chrome grille and trim, special badges and unique gauges. Heavy-duty dualie trucks now have 17-inch wheels. The Sierra comes with OnStar, with the first year of Safe Sound service free. This plan includes automatic OnStar notification in the event of a collision, stolen vehicle tracking and remote door unlocking should you lock your keys in the car. This Sierra also features hooks to hang all of your work stuff up!