The 2013 GMC Sierra 3500HD CC represents the third-generation of GMC's heavy-duty pickup truck lineup. A standout in the work-oriented field, it boasts two engine options – a 6.0L V8 producing 360 horsepower and another 6.6L turbodiesel V8 kicking out 397 horsepower, both mated with a six-speed automatic transmission. It comes in three trims – Work Truck (WT), SLE, and SLT, with various bed and cabin options. The Sierra 3500HD CC includes key safety features like Antilock Disc Brakes, Stability Control, and Front-seat Side and Side Curtain Airbags. Its modest infotainment offering covers the basics, including a simple audio system and optional navigation. The model didn’t see any drastic changes in 2013, maintaining its core GMC DNA - power, reliability, and utility-focused design.