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The 2006 Sierra 3500 Extended Cab 2WD is a 4-door, up to 6-passenger full size pickup, available in 10 trims, ranging from the Work Truck Long Box SRW to the SLT Long Box DRW. The 2006 Sierra 3500 Extended Cab 2WD's closest competitors include the Chevrolet Silverado 2500HD Crew Cab 2WD, the Dodge Ram 3500 Quad Cab 4X2, and the Ford F-350 SD SuperCab 4X2.
Upon introduction, both trims are equipped with a standard 6.0-liter, V8, 300-horsepower engine. A 4-speed automatic transmission with overdrive is standard.
The 2006 Sierra 3500 Extended Cab 2WD is a carryover from 2005.