GMC Introduces 2015 Sierra All Terrain HD

The new GMC Sierra All Terrain HD is available on 2500HD and 3500HD double cab and crew cab models, and is offered with SLE or SLT trims – all with 4WD, including an electronically controlled transfer case. Also included is the Z71 Off Road package, with Rancho twin-tube shocks, hill descent control and a skid plate.  

Sierra HD’s 6.0L gasoline engine is standard and the Duramax turbo-diesel is available.

New and enhanced features introduced on the 2015 Sierra HD lineup include:

• CornerStep rear bumper, EZ Lift and Lower tailgate, standard locking tailgate, standard upper tie-downs and other features that make cargo handling easier.
• Standard StabiliTrak with Trailer Sway Control on all models.
• Integrated cruise control, auto grade braking and diesel exhaust braking, for greater driving control and reduced brake wear on grades.
• Enhanced cooling airflow, which enables the Duramax turbo diesel and 6.0L gasoline engine to better maintain full power, even under heavy loads and high ambient temperatures.
• New Duralife disc brake rotors that offer up to double the service life (late availability).

The 2015 Sierra HD also offers segment-exclusive safety features such as forward collision alert, lane departure warning with an active safety seat, and front and rear park assist. Head-curtain and seat-mounted side air bags are standard on 2500HD and available on 3500HD models.

All models are backed by GMC Pro Grade Protection, with two years of scheduled maintenance – including diesel exhaust fluid – a three-year/36,000-miles bumper-to-bumper warranty and a five-year/100,000-mile powertrain warranty. 

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