left turn signal wont click when on+fix

It's almost always the bulbs themselves. Check all on then affected side. Acquire new ones that are the exact replacements and install all. Recheck operation. If the concern still persists, hands on testing will be required in the affected circuit. Remember that if the flasher was an issue, you'd have issues on both sides, not just one. www.repairpal.com/repair-shops Check that link to find shops near you that can assist.