its actually really easy to get a double din into the chevy truck dashes.and the box is big enough for a double din. if you remove the plastic strip between the factory radio hole and the climate control hole in the bezel (i use a heat gun and wrap the piece around to the back because that will keep the finish at the edge, then grind the backside smooth)it is very close to a double din hole. if its not quite big enough there is about 1/4 inch of plastic at the top of the bezel that can be filed for clearance. then i use a piece of abs plastic to fill the gaps on the side because the gm radio is slightly wider than the aftermarket should be.then for mounting i remove the "box" inside the dash that holds the radio and climate control switches. and mount the head unit to the box with backstrap.
the picture is of an 02 corvette zo6 but the insides are the same.. i have pics of me in the process in an 02 suburban somewhere. if i find them i will post them for you
