Duramax: 1.5 Million And Counting!
If only they were a touch smaller at 4.5L, a bit less expensive and found in the half ton Silverado? GMC Denali HD equipped with the 6.6L Duramax turbo diesel mated to a very reliable 6-speed Allison series 1000 automatic transmission. New for 2013 is a pair of exterior colors ? Deep Ruby Metallic and Blue Topaz Metallic. Cold-weather customers warm up more quickly with the Duramax 6.6L engine, which has a starting time on par with gas engines. Its glow plug cycle time takes no more than 3 seconds in temperatures as low as -20 F (-29 C).