Negative on the t6... I just found it! It is the Chevy Avalanche... compare the rear window and tail light on this spy shot... apparently, it shares a chassis with the hummer h3, gmc canyon and isuzu I-series... and I just found this forum that seems to cover the topic comprehensively
Spyshots: Next-gen Chevrolet Colorado replacement - Chevrolet Colorado & GMC Canyon Forum
