Something funky and hilarious is going on inside General Motors OnStar-powered connected owners apps. myGMC, myChevrolet and possibly myBuick and myCadillac, have errantly started alerting owners that the tires in their vehicles are “critically low” and instead are suggesting comically and dangerously high recommended pressures.

Update: 9/8/23: After reaching out to General Motors, GM-Trucks.com received the response that ” [they are] aware of the issue and it was resolved as of yesterday. Impacted customers are being notified directly.”

If your Chevrolet, GMC, Buick, or Cadillac has warned you that the tires in your vehicle, truck, SUV or crossover are “critically low” in the last two days – you’re not alone. Something has gone haywire inside GM’s connected vehicle systems. Owners are finding their properly inflated tires are just not good enough for GM’s systems, which now read crazy high numbers as suggested inflation targets.

GM’s connected vehicle apps are typically very helpful. They allow you to remote start and control some functions of your Chevrolet, GMC, Buick, or Cadillac on your phone remotely. You can even check on your vehicle’s status remotely, including fuel levels, trip odometers, fuel economy, and yes…tire pressures.

Owners woke up yesterday to text messages and app alerts about tire pressures being low, prompting some to think they had an issue or worse, something nefarious had happened. But it turns out the truth is stranger than you might imagine.

Users on GM-Trucks.com Facebook Groups and Forum started posting their experiences. Turns out that the problem was not the tire pressures- but what GM thought the recommended tire pressures should be.

Critically Low Tire Pressure - Please inflate your times to 511 psi front and 559 psi rear
Critically Low Tire Pressure – Please inflate your times to 511 psi front and 559 psi rear

“I’m not quite sure how to get the tires up to the recommended pressure anyone have any ideas? Just got this notification this morning.”

“I got the exact same notification this morning. At first I thought all my tires got slashed. Then I saw the numbers.”

“Damn that’s 3X the recommended pressure of a semi tire. good luck with that”

Other users saw similar errors but wildly different recommendations. Light duty, heavy duty- it didn’t seem to matter. Even Corvette owners had the same issue.

 

 

 

"Evidently according to Onstar I have my tires WAY under inflated."
“Evidently according to Onstar I have my tires WAY under inflated.”

 

 

This owner saw a recommendation of 1279 PSI
This owner saw a recommendation of 1279 PSI

 

I received an alert that all 4 of my tires are flat and that I should fill my tires to 3530 kPa288 kPa is 42 psi 3530 kPa is 512 psi
I received an alert that all 4 of my tires are flat and that I should fill my tires to 3530 kPa
288 kPa is 42 psi
3530 kPa is 512 psi 

GM-Trucks.com has reached out to GM to inquire about the issue. We’ve not had this issue with any of our three trucks, so we’ve been unable to verify if the issue is fixed. Either way, it’s safe to note- do not inflate your tires to over 1,000-PSI and follow your owner’s manual instead.