The Chevrolet Silverado HD — and its corporate twin in the GMC Sierra HD — can be had with either a standard 6.6-liter gasoline V8, or the optional 6.6-liter Duramax turbo-diesel. Opting for the TD ...
If you have a Duramax diesel engine under the hood of your Chevy or GMC truck, you might be able to get some cash from the folks at General Motors. GMC Sierra and Chevrolet Silverado models that were ...