What does it mean when someone is a Chevy Trailblazer?

There's no established meaning for someone being called a "Chevy Trailblazer." It's not a personality type or slang term. It's simply referencing the Chevy Trailblazer SUV. Someone might use it:

* Figuratively, to describe someone adventurous or capable: They might say someone is a "Trailblazer" in the sense that they are a pioneer or someone who tackles challenges head-on, mirroring the vehicle's off-road capabilities. This is an informal and metaphorical use.

* As a playful insult or nickname: If someone is clumsy or gets into a lot of minor scrapes, someone might jokingly call them a "Trailblazer" implying they're prone to getting into trouble – this is highly context-dependent.

* Literally, to describe someone who owns or drives a Chevy Trailblazer: This is the most straightforward and least metaphorical use.

Without more context, it's impossible to know the intended meaning.