GR Auto Gallery is pleased to present this 2004 1/2 GMC Sierra 2500HD for your consideration. Powering this 2500 is an LLY 6.6 Liter turbo diesel with a built Automatic Allison transmission. This Sierra comes in a very clean black paint complemented by a like-new grey leather interior. This D-Max comes with a whole ton of extras including; Kari Willis 5 position tune, built transmission, 4.5 inch BDS lift, upgraded front end, 35-inch tires and aftermarket wheels, load leaving airbags, Mag-Hytec trans pan and rear diff cover, aftermarket sound system, aftermarket sound system and many more upgrades. This Duramax fires right up and is ready to tow whatever you can throw at it. If you are in the market for an incredibly clean and strong running truck, this is the ride for you! Drive this one out of our showroom or have us assist with shipping it to you anywhere in the United States! Don’t hesitate to give us a call with any questions or for more information.

The LLY (internally called the 8GF1) (engine code “2”) is a 6.6 L; 403.9 cu in (6,619 cc) turbocharged engine which debuted in mid-2004 and continued until the end of 2005. It is a 32-valve design with high-pressure common-rail direct injection and aluminum cylinder heads. The LLY was GM’s first attempt to implement emissions requirements on their diesel trucks. To meet this goal, they turned to a newly developed Garrett turbocharger with a variable geometry vane system and installed an EGR Valve. Learning from problems with injectors in the previous LB7, GM changed the valve covers to allow access to the injectors without having to remove the valve covers, saving significant labor costs if injector replacement became necessary.

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