123F Thanks!
Looking at the images on google of 2005-2007 Summit White Chevrolet Silverado 2500HD Classic LT Crew Cab 4x4 & Colorado they all look the same.
The truck was described as a Chevrolet Silverado full-size truck or a Chevrolet Colorado mid-size truck, believed to be a mid-2000s year model with four doors, a short bed and distinctive wheels.
The truck does have a bed liner and had equipment in the back, police said. It's believed to have a logo or writing of some kind on the doors and on the tailgate.
http://www.theindychannel.com/news/28245536/detail.html
the length of the hood from the front end to where it meets the windshield is less on the Colorado than the Silverado and in the LE photos it looks longer to me.