Left signal light doesn't turn off after I turn left
When I put on my left signal light to turn left, no matter what kind of
a turn I make it won't turn off. Even if I do a U-turn, it won't turn
off. EVERY time I turn left I have to manually turn the signal light
back off with my hand. The right signal light isn't so bad, but
occasionally it will click very loudly after I turn right and not turn off.
It's been like this since I bought it from the dealer ship a year ago.
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Well, you're dealing with a short. If the right turn signal only works the right side bulbs, you know you're issue must be in the switch. The only way left turn signal would light the right side, but the right signal would not light the left is if you added a diode, which I doubt is the case. So the switch itself is suspect. That or a wiring issue. If you just bought the truck, and this is an existing issue I'd suspect wiring. If it just started doing this I'd suspect the switch.
I would check to make sure someone didn't monkey with the wires and switch the left turn signal with the hazard lights or something (do your hazard lights happen to flash only the left turn signals?). If it has or had an aftermarket alarm you need to check their work and see what may be screwed up. Alarm systems often tap into the parking lights, which will look like all 4 turn signals, but are actually dimmer filaments. Flashing the parking lights would actually make your radio flash too, so I'm kind of leaning this way. Can't say for sure on limited information though.
Hey I literally just today had the same problem, put a new bulb in the light was on but did not blink!!!! SUPER EASY SOLUTION, you simply have the bulb in too far. I gently pulled mine out a tiny bit and it started working fine... guarantee that's all that's happening to you!!!
Gday mate, we had a problem with another late model vehicle similar to that, the bulb that was put into the reverse light was not exact brand product ( ohmage was slightly wrong ) and fowled up computer, correct bulb in place and disconnect battery to reset K A M ( keep alive memory) problem solved, BEWARE, some vehicles cannot have KAM reset except for dealer computer tethered reboot , just try putting the factory correct bulb(s) in and see how it goes, geoff. hope this helped.
This is weird! It seems to me that the left turn signal is getting 12v from somewhere at all times.I don't think the flasher is the problem(most GM systems use a single flasher for left and right)You probably have a crossed wire somewhere(or an add on accessory was connected to the left signal wire,allowing 12 volts to bleed through to the circuit)
Just a wild suggestion not at all specific to your car... Check the bulbs in, and functionally of, your turn signals and tail lights and brake lights. I'd don't know if it still applies, but once upon a time a burnt out bulb would cause the cruise not to work (some kind of a safety thing).