[silveradoman]

You don´t use the same relay for the emergency flashers, I believe the turn signal relay is supposed to do that, it needs to be heated up by the current going through the system to interrupt the flow of current for a little while and when it cools it lights up again. When a bulb goes out, you don´t get the same current through the circuit, so it flashes faster to let you know the bulb is out. With a plain light bulb you probably have 3 amps going through the circuit, with a LED you may have depending on the amount of leds on the "bulb" only abuot 0.6 amps, so the flasher thinks a bulb is out. This is great as far as leaving your parking lights on all night and you won´t drain the battery. See if your turn relays are thermal or thermic, there might be a different type of relay in an autopart store. I know in the past the turn signal was controlled with a thermal flasher relay, I would think by now they would have put an electronically timed circuit in there but you never know with GM