Make sure ALL of the bulbs are working. If one or more bulb has failed, the flashers stop so that you'll be forced to check them out. If it's not a bulb, it could be the turn signal switch.
If you're sure the fuse is okay, the next thing to check is the bulbs. If the bulbs are okay, the problem could be the turn signal relay, also called the flasher relay.
could be a bad ground
Fast-blinking turn signals in your C5 Corvette, despite having all bulbs replaced and functioning, typically indicate a problem with the turn signal circuit. This could be due to a faulty relay, a poor connection, or a grounding issue. Additionally, ensure that the replacement bulbs are the correct type and wattage, as mismatched bulbs can also cause rapid blinking. Checking the wiring and connections for any damage or corrosion may help resolve the issue.
try to determine if it blows when you signal left or right. Once you find out which side the problem is on, there is either an exposed wire shorting out or there is corrosion at the turn signal harness for that particular side, front or rear.
If the blinkers on your 1999 C5 Corvette aren't working, first check the fuse related to the turn signal system, as a blown fuse can often be the culprit. Inspect the turn signal bulbs to ensure they are functioning properly, as burned-out bulbs can prevent the signals from operating. Additionally, examine the turn signal switch and wiring for any faults or disconnections. If these steps don't resolve the issue, it may be necessary to consult a professional mechanic for further diagnosis.
Bulbs blown?
One of the bulbs is burnt out.
You may have a "ground loop" problem on the left turn signal. Check the ground wire at the front and rear signal bulbs.
def check bulbs first. check all of the bulbs. Could also be the turn signal switch inside the steerring colum
Could be the bulbs or the fuses or the flashers or the signal switch assembly
Front signal bulbs on a RSX are changed from the engine bay. Find the lightbulbs for the signal bulbs located towards the bumper of the vehicle. Pull them out and replace them.
TO fix a broken Astro turn signal, check the flasher first. Then check the sockets and bulbs to find the problem.