The most visible difference between the Yukon Denali and the regular Yukon is the Denali's aftermarket-inspired chrome grille, in place of the Yukon's blacked out grille.
Behind that facade, however, is some hardware that sets the Denali apart from the rest of the Yukon line: a more powerful 6.0-liter V8 and a full-time all-wheel-drive system. Neither the engine nor the AWD system is available on the other Yukon models. Nor does Chevrolet offer anything comparable in its Tahoe line.