For Sale by owner with clean title: 2008 GMC Sierra 2500HD with the highly sought 6.6L LLM Turbo-Diesel engine + Allison transmission. This truck is dependable and powerful. It is a pre-DEF (diesel exhaust fluid) truck so no DEF purchases! I am the 2nd owner only (non-smoker) and have maintained the vehicle well. It has the factory installed towing package. The brakes were done last month. Interior looks and smells great, and leather trims are all good. Upgraded Pioneer touch-screen stereo system with Bluetooth for phones/ Carplay. Rear under seat storage compartment add-on installed. Front tow hitch receiver installed. Tri-fold tonneau cover and bed liner.