You must be out of blinker fluid.
turn signal relay fuse
The 1987 Chevrolet Corvette turn signal flasher switch is located beneath the drivers side dashboard. The turn signal flasher switch will be to the right of the brake pedal.
your rear bulb is blown - replace the bulb The turn signal blinks fast because the bulb is going out. That is also why the others dont blink.
The 1995 Chevrolet Corvette turn signal flasher unit is located behind the drivers side dashboard. The turn signal flasher unit will be above the brake pedal.
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turn signal relay is bad
Buy a "highway" turn signal flasher
Check your bulbs and your flasher.
i dont know and i need help replacing the front left turn signal bulb on a 2006 c6 corvette coupe z51
Probably needs a fuse.
This may very well be a problem with your ground connections at that turn signal.
Why would you want the blinker faster. They should blink at factory specs.