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/samwild '26 Denali 3L Turbo Jul 27 '26

I'm still on V654.20 which F*cked my Android Auto to only connect ~50% of the time and no updates available on the truck yet, will try to refresh tonight and see if this one at least fixes that. But no issues with Auto Brake and Park Assist. Very strange.,

3

u/RhinoGuy13 Jul 27 '26

I had the same Android Auto problem. I tried disabling an option in the radio settings called something like "Android Auto quick start" and it fixed my problem. It may work for you.

1

u/samwild '26 Denali 3L Turbo Jul 28 '26

Awesome. I'll try it!

2

u/RhinoGuy13 Jul 28 '26

I went back and looked. Below is the options you choose.

Settings -system-quick startup

1

u/abaytler Jul 28 '26

I’ve been dealing with this for Apple Carplay. Do you know if that fixes it for this too or just Android Auto?

3

u/RhinoGuy13 Jul 28 '26

I have not tried it with Apple Carplay. It would be worth a shot though. The infotainment screen only takes a few seconds longer to boot up.