I searched extensively and found nothing related to my problem, so here goes my thread: I have a 1995 Chevy C1500 W/T 4.3L w A/T. When the brake pedal is depressed All of the brake lights (left, right, & third brake lights) flash on for just a half-second, then they go out even thought the brakes are still depressed. So, this doesn't appear to be the bulbs, or they wouldn't light up at all. Doesn't seem like it could be the brake light switch, or they wouldn't come on at all. I wouldn't think that the circuit boards would cause this either. When I laid down under the dash to look at the brake light switch, I heard a clicking sound when the brake pedal is depressed. The brake light switch looks like it would be a bear to replace, as I can only barely see it and can't hardly reach it either. I have not bothered to check my Chilton manual as I didn't think this kind of problem would be addressed in it. Sounds like a relay clicking, but I can't tell. I just figured the easiest and cheapest way would be to ask on this forum. I can use hand signals for now or just tap the brakes in rapid succession to let people behind me know that I am stopping, but I don't want to do that any longer than is absolutely necessary. Sorry I haven't checked the obvious like the bulbs, fuses, & circuit boards, but I figured that I wouldn't even be getting the brief flash if any of these were the problem. It also seems like if it were a relay that it would either work or not, instead of just flashing on for a half-second. Any help would be appreciated!