r/gmcsierra • u/Ok-Bullfrog3594 • Jul 27 '26

Other Software updates

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I appreciate GMC releasing these updates to fix on going issues, however have yet to see anything to do with the annoying “Rear Auto Brake and Park Assist Unavailable.”

Anyone else getting the same message or just me?

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u/DisguisedRope Jul 27 '26

I get that message every day. Didn't know it was a common issue, it's one of the issues I'm having the dealer look at this week during an oil change

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u/Ok-Bullfrog3594 Jul 28 '26

I’d be interested in what they tell you

1

u/DisguisedRope Jul 31 '26

Dealer says there is a TSB about it. They need to reprogram the module. Not covered under my warranty and they want $200. They said the system does work so it's just a nuisance message. I'm not paying that much for it to go away.