I have been having a strange problem with my driver's side turn signal recently, it functions properly only until the brakes are applied. The passenger's side blinker works just fine, but if I try to signal a left turn and use the brakes at the same time I either get no blinker or a very slow blinker.
The first thing I tried was to replace the bulbs, where I replaced both driver's side turn signal and brake bulbs in the taillight assembly. This seemed to fix the issue for a couple days, then the problem came back.
Next, I was thinking that either there is a bad ground somewhere or maybe a bad flasher. I would think that a bad flasher would cause the problem on the passenger side as well, so I'm not sure that's it. Has anyone had this problem, any input is appreciated.