UPDATE: Spy shots are GMT900 Hybrid versions. The aero gear isn't for looks, but supposedly improves aerodynamics and boosts fuel economy.

Our automotive compatriot over at Winding Road, Chris Paukert, procured spy shots of several aero-enhanced versions of the Tahoe and Yukon SUVs. The assumption gathered by these test mules is that the General may be outfitting some of their newest GMT900 SUVs with some additional flare in a move to make a more 'sporty' 'ute.

Analysis of the cosmetic upgrades centers around the front clip, which sports a lower bumper and a revised grill, as the clean-themed side steps and a modified rear end wrap up the overall look.

[Source: Winding Road]