How much to repair head gasket on 2002 Chevy trailblazer and is it worth it?

Repairing a head gasket on a 2002 Chevy Trailblazer typically costs between $1,000 and $2,000, depending on labor rates and parts needed. Given the vehicle's age and potential for other issues, it's important to assess its overall condition and value. If the Trailblazer is in good shape otherwise, the repair may be worth it; however, if other significant repairs are likely, you might consider investing in a newer vehicle instead.