2021 Tahoe High Country

[Desperateforinfo]

 

[Desperateforinfo]

Is there anyone that has had these same problems with their 2021 tahoe? The dealership doesn’t know how to fix it.

 

[d_hawk]

If all those warnings are happening simultaneously I would check the battery. Low voltage can adversely affect the various vehicle modules and computers.

 

[DuraYuk]

In the 3rd picture from the top you can see terribly low battery voltage. Alternator Is failing. Check with voltmeter. Could be sporadic.

Find another dealer.

 

[WalleyeMikeIII]

It’s low voltage, likely. Battery, charging system, or perhaps bad ground…

Also notice low fuel in two of the pics…were you really out of gas? If not, another hint at an electrical issue…

Start at the basics:
1) be sure battery terminals are clean and tight
2) measure battery voltage with vehicle off, should be 12.5-13V, if not, charge battery
3) Start vehicle and measure voltage again, should be around 14.2, if not, suspect bad alternator.

Dealer should be able to do these.

 

[John pennachio]

Had same issue 2021 High Country dealer broke connector plug to alternator and water got in it after they did my lifters

 

[Donnation]

Its definitely software related. I had the same issue with my 2021 Tahoe last year and it drove me crazy. I would come outside to a dead vehicle with no way to start it. It wouldn't take a jump and I had to have it towed in 5 times. Finally the dealership did a full software reset and reload and that fixed it.