2006 GMC Canyon Left turn signal

I have no left signal front or back when using left signal device, I do have all hazard lights working and right turn signal. I just replaced the combo mutifuntion switch. The left turn signal worked fine until I turned on the right which worked fine and went back to the left which no longer worked. I disconnected the positive battery cable for 5 seconds and put it back on and they worked again for about 30sec. And was speratic at times put the right on again and left did n ot work again. Unhooked cable from battery again and they started working again for about 20sec and would blink speratic again, then not work at all. Unless I reboot the system again.