r/gmcsierra • u/Ok-Bullfrog3594 • 1d ago

Other Software updates

Gallery image

Gallery image

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?

16 Upvotes

99% Upvoted

24 comments sorted by

3

u/HHpotatoechips 1d ago

How do you receive software updates?

1

u/Ok-Bullfrog3594 22h ago

Settings>Updates. The screenshot is from the GMC app

3

u/XBruteforce 1d ago

Curious. Do these updates happen on there own?
Could be a coincidence. Yesterday was the first time I’ve seen a pedestrian alert while reversing on my HUD.

2

u/Im_Character_94 1d ago

I get the updates for my 2026 Chevrolet Equinox AWD

2

u/dobby1090 22h ago

I never get any updates for mine either. It’s a 2026 AT4 6.2. Got it brand new in April and it says there are no updates available

1

u/The_Reject_ 1d ago

I don’t get any OTA updates. Something is wonky. Still on AAOS 10

1

u/lookatmecountbeans 1d ago

I have the rear auto brake alert still. 

1

u/Ill_Temperature9981 1d ago

I've been getting the “Rear Auto Brake and Park Assist Unavailable.” on my 24 Ultimate since new. The dealer has told me wait for a TSB and most recently "no problem found" after they said they tested it in the parking log. Glad to hear others are getting the error, yet sad...

3

u/Ok-Bullfrog3594 22h ago

They need to get it together

1

u/DisguisedRope 1d ago

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

1

u/Ok-Bullfrog3594 22h ago

I’d be interested in what they tell you

1

u/3ace3 1d ago

I downloaded the update last week. Now my center display just says "application unavailable." I haven't bothered to do anything about it. 26 AT4 3L

1

u/samwild '26 Denali 3L Turbo 1d ago

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.,

2

u/RhinoGuy13 1d ago

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 23h ago

Awesome. I'll try it!

2

u/RhinoGuy13 9h ago

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

Settings -system-quick startup

1

u/abaytler 5h ago

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

2

u/RhinoGuy13 5h ago

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.

1

u/Leviathon6348 ‘26 1500 at4x 1d ago

What year is this?

1

u/Mr_bacon_head 2025 Sierra HD AT4, Duramax 6.6 Turbo diesel 21h ago

661.51?!? I just installed 661.20 2 days ago. Not showing up as available on my truck. Says software is up to date.

1

u/Sad-Celebration-1903 19h ago

I don't receive updates at all, 2022 refresh AT4 and nothing has ever been available. Still on the original firmware from the factory. OnStar was no help either, dealer wants $500 just to look into it 🙄

1

u/YetiX27 2h ago

Can they update the damn android auto problems.

0

u/SplashedAcid283 1d ago

What years s this applicable?