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The North American Trailblazer and the Thai Colorado/Trailblazer are completely unrelated vehicles and I think this entry should only refer to the North American models.
The NA model is based on the Chevrolet S-10 pick up, the Colorado/Trailblazer was developed in Brazil, derived from an Isuzu pick up. They share no common parts. The Thai Trailblazer is essentially just a body version of the Colorado pick up.60.231.232.112 (talk) 23:59, 22 December 2019 (UTC)[reply]
GM recently announced that the Holden Colorado would be replaced by the Holden TrailBlazer, which is an upgraded SUV. This is a smart move seeing as they already have the Colorado pickup truck.