Official Word:

The Chevy Suburban HD Z71 is the culmination of a "what if" exercise that melds the popular Suburban 2500HD with the popular Z71 off-road package - a combination not currently offered by the factory - and partners it with a new, fuel-saving smaller-displacement diesel engine. The concept uses many production parts, including the front-end assembly from Chevy's HD trucks, along with some unique custom touches - including rear wheel flares that pick up the styling cues...Read.