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Bought my used 2020 Sierra 1500 yesterday, setup the MyGMC app today and saw these diagnostics.

Kyle.B
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Kyle.B New Member

Kyle.B

Posted
Posted

Bought my Sierra yesterday, remarkably low mileage sitting at under 9k. got onstar connected today along with the MyGMC app and saw these diagnostics. No lights on the dash as far as engine light or popups on dash. she still has a year on the major factory warranties, should I take her in or is there an issue with the GMC app that i'm not aware of?

 

Thank you for any help in advance. 

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Byrds8 Enthusiast

Byrds8

Posted
Posted

If there are no codes in your dash, it is probably just a glitch and it will update and fix itself later. I have had mine do this when I started the truck for a very short moment and cut it back off.

lebag335 Enthusiast

lebag335

Posted
Posted

Log out of the app and then log back in and see if those don't go away.  App glitch if no lights on the dashboard.

BigBadSierra Senior Enthusiast

BigBadSierra

Posted
Posted

 

279312443_720715369177706_6835941208632519976_n.thumb.jpg.28017ed4e3552957125fa5f2b4734745.jpg

 

My Brand New 2022 did the same thing the dealer told me to give it two days and see if it cleared up.

It disappeared and no issues.

 

I suspect they disconnected something when they where prepping the truck and set the codes off.

 

Or even ran the battery down low when putting the tint on the windows.

 

Regardless the truck never through a code and the APP cleared and I've had no issues.

 

 

 

 

 

rustyfla New Member

rustyfla

Posted
Posted

I have the exact same thing on the phone app, though no codes in the truck.

They just released an update a few days ago on the app, and then those same codes showed.

Not an issue with the truck but the app.  The app has definately had issues in the last year.

claw2791 Enthusiast

claw2791

Posted
Posted (edited)

I would check your maintenance schedule. Mine showed this once it was reaching 15k miles. The maintenance at that point and (probably others)  was to check all those system mentioned as a normal process. After the Dealer visit, it's no longer showing. 

 

Like others said they did an update to that part of app recently. I was concerned as well when it showed that, but makes more sense now. 

Edited by claw2791
TexasKeith Enthusiast

TexasKeith

Posted
Posted

I had the same issue last week with the updated app.  Everything in the list had a warning, but nothing in the truck had a warning light. Next day it was clear. But it also showed (see pic) that I was getting “heavenly” mpg, so I chalked it all up to app update bug. Another user said reinstalling the app will clear the issue.

 

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Rocz3cqg Enthusiast

Rocz3cqg

Posted
Posted

I get those error messages on My Chevrolet App all the time. 2022 Silverado HC 3.0 Duramax. It usually disappears after a few starts. The app itself is buggy because every so often I have to clear the cache on the app because the app is not starting correctly..

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