Editing General Motors GMT platform (section)

=== Hummer ===
In contrast to the Hummer H1–designed and assembled by AM General, the [[Hummer H2]] and [[Hummer H3]] were developed by GM, receiving their own platform designations. Designated the '''GMT825''', the H2 was derived from the GMT820 (Chevrolet Tahoe/GMC Yukon), with its own midsection frame design and a rear frame shared with the 2500-series GMT800 pickup trucks.<ref>{{cite web|last=Clavey |first=William |title=The Hummer H2 Is A Grand And Opulent Bad Idea |url= http://jalopnik.com/the-hummer-h2-is-a-grand-and-opulent-bad-idea-1796613645 |website=Jalopnik |date=12 July 2017 |access-date=25 September 2017}}</ref>

The H3 SUV was designated the '''GMT345''', a close variant of the GMT355 (Chevrolet Colorado/GMC Canyon). The 2009-2010 H3T pickup truck was designated as the '''GMT745''', adopting a nomenclature closer in line with the GMT700 used by the later second-generation Colorado/Canyon.