2004 Chevrolet Trailblazer lighting problems

Tl*the contact owns a 2004 chevrolet trailblazer. The contact stated that the vehicle was parked when he attempted to install a child safety seat in the third row seating, but none of the seat belts would successfully tighten and retain the child seat. The vehicle was not taken to have the failure diagnosed or repaired. The contact also stated that the headlights were experiencing a recurring failure in which they would periodically burn out.

I have a 2004 chevy trailblazer; while driving on the highway; all gauges, lights, etc. Abruptly stopped working and continue to not work. I researched on line and found it could be what is called the "cluster board". I took my vehicle to a local chevy dealer in daytona beach fl. They insisted it was the ignition switch. They replaced that mechanism for just under $300.