Hello all. First I hope everyone is healthy and safe during this current pandemic. Meanwhile I’m having an issue with the brake lights on my 2006 Chevy 3500 Duramax dump truck. With all the lights on, when I step on the brakes, the brake lights do not “get brighter”. With the truck lights off, when I step on the brakes, the brake lights work fine, but the parking lights come on. To me this seems like a head scratcher. Any advice on what it might be would be greatly appreciated.