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Ask Amedee Your Own Question
Amedee, GMC Technician
Category: GM
Satisfied Customers: 26221
Experience:  ASE certified tech with advanced level specialist. Wisconsin certified emissions state inspector
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Turn signal issues, no, 2011 acadia, hope so. haven't tried

Customer Question

turn signal issues
JA: Have you checked the fuse?
Customer: no
JA: What is the model/year of your GM?
Customer: 2011 acadia
JA: Are you fixing your Acadia yourself? What have you tried so far?
Customer: hope so. haven't tried anything. the left turn signal blinks fast on the dash. the front turn signal works fine, the rear left (LED) is always lit up. problem only exists at night, (when all lights are on)
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 8 months ago.
Category: GM
Expert:  Amedee replied 8 months ago.

Hello and welcome!

My name isCustomerand I can assist you with your question.

Expert:  Amedee replied 8 months ago.

Did you still need some help?

Was anything replaced for this issue up to this point?

Are you looking for possible causes?

Would you like a wiring diagram of this circuit?

Customer: replied 8 months ago.
Looking for a solution yes. Nothing replaced.
Expert:  Amedee replied 8 months ago.

Thank you for that information. One minute while I pull up your vehicle.

Expert:  Amedee replied 8 months ago.

This problem you are experiencing is most likley a faulty bulb or a faulty socket allowing voltage from the running light circuit to backfeed into the left turn signal circuit. Sometimes there is corrosion or a wiring issue at or going to the socket causing this problem as well. But usually you replacing the left rear bulbs (and possibly sockets) will do the trick.

Customer: replied 8 months ago.
there are no bulbs in the rear. Its all led
Expert:  Amedee replied 8 months ago.

Ok, one of the LED bulbs could be bad leaking the voltage from the running light circuit to the turn signal circuit.