From several of many sources I have read...
"The H3 will be built in Shreveport, La., on the same chassis as the Chevrolet Colorado and GMC Canyon mid-size pickup trucks." USA Today
"Underneath the characteristic gyrene Hummer styling, complete with faux-military leanings, is a version of the recently introduced Chevrolet Colorado/GMC Canyon pickups." Car & Driver
"The H3 will be built on the mid-sized pickup architecture developed for the 2004 Chevrolet Colorado and GMC Canyon." AutoWeek
"The H3, which is expected to go on sale as an '06 model, bears a strong family resemblance to the H2 and the original H1. Built on a version of the Chevrolet Colorado pickup chassis, the H3 will feature body-on-frame construction." Detroit News
Edmunds has a few pictures too. http://www.edmunds.com/future/2005/hummer/h3/100301493/photos.htm- l
"The H3 will be built in Shreveport, La., on the same chassis as the Chevrolet Colorado and GMC Canyon mid-size pickup trucks." USA Today
"Underneath the characteristic gyrene Hummer styling, complete with faux-military leanings, is a version of the recently introduced Chevrolet Colorado/GMC Canyon pickups." Car & Driver
"The H3 will be built on the mid-sized pickup architecture developed for the 2004 Chevrolet Colorado and GMC Canyon." AutoWeek
"The H3, which is expected to go on sale as an '06 model, bears a strong family resemblance to the H2 and the original H1. Built on a version of the Chevrolet Colorado pickup chassis, the H3 will feature body-on-frame construction." Detroit News
Edmunds has a few pictures too. http://www.edmunds.com/future/2005/hummer/h3/100301493/photos.htm- l