Tl* the contact owns a 2018 chevrolet colorado. the contact stated that the dimmer switch did not activate when the vehicle was in motion. the contact stated that the interior lighting was bright and impaired his vision while driving at night. in the daytime, the lights on the instrument panel were too dim and prevented the contact from seeing the instrument panel display. the vehicle was taken to bruce chevrolet (1084 sw oak st, hillsboro, or 97123, (503) 388-4240) where it was diagnosed that the dimmer lights failed due to a short in the computer system. the manufacturer was notified and did not assist. the vehicle was not repaired. the failure mileage was approximately 50. *tt