GMC Logo2007 GMC Sierra 2500HD III (GMT900) Extended Cab Long Box: Extended cab pickup truck with long cargo bed side profile.

Extended cab pickup truck with long cargo bed side profile.

White extended cab pickup truck with four doors and long cargo bed viewed from the side, emphasizing its heavy-duty build and utility features.

View Dimensions of the 2007 GMC Sierra 2500HD III (GMT900) Extended Cab Long Box

View 39 images of the 2007 GMC Sierra 2500HD III (GMT900) Extended Cab Long Box

Popular Comparisons: 2015 Ford F-Series F-150 XIII SuperCrew vs 2018 Jeep Wrangler IV, 2022 Rivian R1T vs 2015 Honda CR-V IV, 2021 Mercedes-Benz E-class Long vs 2017 E-class All-Terrain
Small red car