Stuck turn signal???

[Painter D]

So my left front running light/blinker is not functioning right and I think I've narrowed it down to a bad turn signal switch, but I'd thought I'd post this to see if anyone else had any ideas for fixing it that I haven't already tried.

Here's what happens, when I turn the lights on the left front running light ,lights up really bright (both elements lit). If I turn on the left blinker nothing happens it stays lit up really bright. I've checked the ground, checked the bulb, and checked ALL connections and everything appears to be good. When I turn on the right blinker it works perfect ,and I can hear the flasher ticking (like it should) that leads me to believe the turn signal switch inside the steering column is either stuck, or just went bad.............right???