You could try replacing the relay. It's located behind, below the radio.
>here's RADIO
(R)< here's relay.
If you can find the wires, you'll be able to trace it right back to the relay and just with a simple twist it should be able to come right out...change it out and see if that helps.
Question: When your turnsignals go out, (if you use your A/C) does your blower stop working? If so you might have an ignition harness problem. It could be loose and not making a good contact. If its' anything I had the most trouble with my GT it's beent he Turnsignals. Good Luck