i have a 93 z28, when i bought it i noticed the left blinker blinked really slow...about half has fast has my right blinker (normal).
so i changed the fuse, nothing. still slow. changed the front and rear turn signal lights, nothing. still slow. now it doesnt even blink, i just click it and the light on the dash stays on but the blinker doesnt even blink. some times it works but then stops after 20-30 sec. this is only the left blinker. i need some help quick, don't want to get pulled over cause i ran out of blinker fluid...

 

Try replacing your blinker relay thing. I cant really be more specific, sorry You must remove the knee bolster under the steering wheel (the big piece under the wheel in front of the driver seat on the bottom of dash) and you will see two metal cylinders. Try your hazard lights and you hear the hazard relay click. The one not clicking (the sound you would hear w/ the blinker) is the one for the turn signal. It should have 3 wires going into it. Just go to AZ or pep boys or something and get a new one. Should be 12v and three terminal.

 

Sometime these sockets get messed up. I had to replace mine. check for corrosion