GMC Logo2007 GMC Sierra 3500HD III (GMT900) Extended Cab Long Box: Car radio and dual-zone climate control panel with digital display and control knobs.

Car radio and dual-zone climate control panel with digital display and control knobs.

Center console featuring a car radio with preset buttons, digital XM radio display, large power knob, and a dual-zone climate control system with digital temperature readouts and multiple control knobs for fan and airflow.

View Dimensions of the 2007 GMC Sierra 3500HD III (GMT900) Extended Cab Long Box

View 28 images of the 2007 GMC Sierra 3500HD III (GMT900) Extended Cab Long Box

Small red car