One problem related to turn signal has been reported for the 2006 Chevrolet Trailblazer. The most recently reported issues are listed below.
The contact owns a 2006 Chevrolet Trailblazer. The contact stated that the wiring harness melted the tail lamp circuit board. In addition, when using the turn signals, the indicator fluctuated abnormally fast. Upon inspection, the exterior lighting did not work. The failure occurred without warning. The dealer confirmed that the wiring harness malfunctioned, and the circuit board and wiring harness assemblies needed to be replaced. The manufacturer was notified of the failure. The failure mileage was approximately 112,000.