Need Help with 2006 Sierra Turn Signal & Driving Light!

[gadawg31]

Yesterday, I was replacing the driver's side running light bulb. Prior to that all other lights were working properly. After I replaced bulb, I noticed that the passenger side turn signal was on. I cranked truck and used the turn signal switch to test both sides and each worked; however the right side signal light would continue to stay on. I tried every variation of testing to see if it would go off and it continued to stay lit. Please keep in mind that it was not doing this prior to me replacing the driver's side running light bulb. Anyone have any ideas or has this happened to any of you? I have never come across this scenario before and I am hoping someone may have an idea. Turn signals work perfect, except the passenger side will remain on even when the lights are on or off.

 

JD

[gadawg31]

Anyone? Really need to try and figure this out, before I start throwing money at it.

[rjgti]

did you use the right bulb. sounds like a grounding problem

[gadawg31]

Correct bulb used and even double checked all other bulbs for accuracy. Had no issues with turn signal staying on, until I replaced the burned out running light bulb.

[rjgti]

it is getting its ground from somewhere, you may need to look at the schematic for your truck as I don't have it. just a thought....if you turn that bulb you replaced around so the contacts are in the other spot, what happens

 

just thinking their maybe a diode in that bulb. what number is it

[gadawg31]

Not sure what the problem actually was, but I seem to have it fixed. Strange part is that I removed the new running light bulb and the turn signal light went out and once I replaced the running light bulb, the turn signal never came back on. Here is what I did total: removed all front turn signal and running light bulbs, cleaned with air and added dielectric grease to connections and then replaced with all new bulbs. Finally, replaced the Hazard/turn signal relay under the dash and everything seems to be working perfectly. Lights came on when it got dusk and then turned off when it was enough daylight, also running lights worked and signals all are working. Not sure what the problem was and may never know.

[rjgti]

good to hear