One problem related to sway bar has been reported for the 2006 Chevrolet Trailblazer. The most recently reported issues are listed below.
Check engine light come one code p0461 - fuel tank pressure sensor circuit high voltage. This problem seems to be a common problem with the chevy Trailblazers and should be a recallable issue. Furthermore, the suspension on this vehicle has been a financial drain from the sway bar links, front end links stabilizer shaft and ball joints.