flashing drl's

Hi,
My 97' Lumina's headlamps flash on and off as do the dash lights in unison. The taillights stay on though. I believe it could be four things, either a bad switch, bad circuit breaker, a bad drl control module, or a bad relay...problem is, I've checked wiring diagrams, and can't seem to locate a headlamp relay anywhere! Nor can I find one on the vehicle. Any ideas as to what is causing this, and if there is indeed a relay, where would it be located? Any help would be appreciated!

The headlight switch is a known fault with these cars. I'd suggest getting a brand new one (as opposed to junkyard/salvage) due to the fact that it is a problem across the board with this car. I'd look into that.

short maybe?