My 2007 2500 Silverado bright lights do not come on when selected: the lights do work when the flash feature is used.

Suggestions?

 

I'm unclear on what you mean about bright lights (high-beams?) I'm also unsure about the flasher comment. Can you elaborate?

 

if you reffering to high beam then it is due to blown fuse or a bad relay. If the high beam fuse has blown, it'll need to be replaced and the circuit will need to be inspected for problems. Or, it could be a bad relay. If the headlight relay has failed, it may not respond when you attempt to switch the high beams on.