A perennial competitor to Ford's Power Stroke V8 and Ram's Cummins turbo diesel inline six-cylinder engines, the 6.6-liter Duramax is one of the most popular diesel powertrains for heavy-duty trucks, ...
GMC has hit the nail on the head with this one. Great truck, comfortable interior, powerful duramax diesel and stunning looks. This is far and away the best vehicle I have ever owned and will drive it ...
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