I’ve been having an issue with my Tahoe for the past month or two and have been scratching my head trying to fix it.
The passenger side (right) turn signal doesn’t work when using the wiper stalk but will flash normally with the hazards. I’ve tried swapping out the wiper stalk assembly but that didn’t change anything and I’ve looked at most of the fuses that relate to the turn signal, headlamps, and even the courtesy light but I can’t seem to find the issue.

I’ve checked literally every fuse and they’re all fine, but a new issue has popped up. The reverse lights are out. I’ve replaced the bulbs and checked the sockets and can’t figure it out.

Anybody have any suggestions or ideas?

 

If the right turn signal has no response - no flashing indicator on dash, either front or rear signal, and the hazard lights all work, your problem is between the stalk and the Body Control Module. If a new stalk did not fix it then you likely have a wiring issue in the column or instrument panel.

Both of your issues will take some electrical testing to sort out. Best starting point would be to inspect the connectors and harness to look for something out of place, rubbed through or corroded.

 

Hopefully somebody can see this post and has an answer for this I've been poring through the schematics, ruled out a bad ground. I have checked every fuse every relay all good except fuses 24 and 25 at the underhood box, which show no juice. The right turn signal fuse at the left side of the dash shows battery voltage. All other tail lights work fine. I am thinking it could be a wire and I followed the green/white wire to a junction with a big bundle of wires. There is continuity from that point to the connector for the right tail light subharness. The green/white wire turns yellow/black at the subharness, but shows continuity from the connector to the bulb socket. I wander where can I test the remainder of that wire, perhaps testing continuity from the fuse, but that won't show the exact location of the fault, only the general section at fault. I would like to get your input on this Quagmire thank you

 

There is more to it. I was able to get the turn signal to work, but it triggered the engine light and the abs light. Clearing the codes, one for the evap system and one for the abs will reproduce the blinker failure. No rear right turn signal light and rapid blinking on the front and mirror lights.