Passenger Turn Signal Not Working

[jrey]

Hey everyone, I was installing oem headlights to my truck and noticed my passenger turn signal does not turn on when the lights are on. Once I turn on the right blinker it starts working but alternates with the side marker. Anyone have an idea what’s the issue? Much thanks

 

[Schurkey]

Perhaps a moderator will move this out of "Engines" and into "Audio + Electronics".

 

[Road Trip]

Greetings jrey,

Your electrical symptoms point to a weak/marginal ground connection that the
passenger side headlights, blinker, & side marker lights share. It's identified as G112:
(See attached.)

For more info on how to use the Factory Service Manual to fix shared ground issues
like this, start reading at post #8 in this thread: (Ground troubleshooting)

And if you don't already have a copy of the GM Service Manual for your truck,
go to this thread and download a copy. (Factory Service Manuals)

Let us know what you find. Good luck!

 

[GoToGuy]

Front turn signal, alternates ," front, right side front, front, right side front, and so on left forward turn signal same action.