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2022 GMC Sierra 3500 HD Denali Turn Signal on Dash stays on

Vernon Thompson

By Vernon Thompson
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Vernon Thompson New Member

Vernon Thompson

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Posted (edited)

I have noticed that intermittently the turn signal indicator on the dash will remain on without using the turn signal lever.  It does not flash but stays on steady.  Once driving the vehicle this goes out.  I have noticed that it is usually when stopped or parked.  I am not sure how to replicate the issue or if the actual signal front or back is on.  I do have a picture of it occurring.  I have observed it both on the left indicator and the right.  At first I thought maybe it was an indication of which way the tires and steering wheel may be oriented to aid the driver in understanding which direction the tires are pointed.   Seems very strange and not very intuitive.  I have researched the owners manual with no insight.

20220301_122746.jpg

Edited by Vernon Thompson
Jsdirt Senior Enthusiast

Jsdirt

Posted
Posted

Warranty time. Let them worry about it.

 

Everything is controlled by SEVERAL computers, along with various types of communication signals bouncing through every system - could literally be one of 500,000 possible failure modes. With all the fancy creature comforts comes deep complexity. Par for the course today. Everything will glitch at some point in its life. With 1,000 miles of wiring, the chances for mistakes in manufacturing go way up. Couple that with the penny pinching nature of automakers today, and it's a miracle these things even start and run. 

  • 1 month later...
Vernon Thompson New Member

Vernon Thompson

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Follow up to my own post for any follow on readers.....dealer reached back to GM and they had to do a global reset.  This seems to have worked thus far.  Time will tell if it really is fixed.  Dealer was unaware of any actions to take until they contacted there support at GM.  GM was aware and mentioned as of Apr 22 they had not put out a service tech bulletin for it but had a solution to fix.

  • Like 1
Jsdirt Senior Enthusiast

Jsdirt

Posted
Posted

Hopefully that's all it was. Sometimes it's as simple as rebooting the system, like a Microsoft product. Thanks for posting back. If anything changes, let us know.  Could be a big help to someone years down the road searching Google and coming across this thread.  👍

 

Fingers crossed it stays fixed for you. 🍻

  • 4 months later...
hooperbrianq Enthusiast

hooperbrianq

Posted
Posted

I have this exact same issue.  2022 GMC 3500 Duramax long bed, crew cab, vinyl work truck.  I was able to replicate for dealer.  They kept it for 4 days waiting on response from GMC.  I ended up retrieving the truck from them before it was fixed. I would think they would have followed up with me.  Not so........  This tells me they have some kind of electrical ladder glitch, incorrect spec relay or a CAN programming error.  Presume they will come up with a fix at some point.

  • 3 weeks later...

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