Onstar fuse location?

Tomski12 · June 9, 2024

Hi everyone,

I have a 2022 Sierra and I’m having a very first world issue. My GMC app does not communicate with my OnStar. The reason why I generally use it is when I am trying to remote start my truck from outside of key fob range.

The OnStar Green Light does not show so the telephone customer service has told me I need to go to the dealer. Before taking my truck to the dealer and wasting a morning, I’d rather take the take out the fuse and see if that will reset the OnStar. Therefore, I am looking for the fuse that controls the OnStar. I saw another where they indicated that it was F 23 however, this is for the prior model and this space is empty on my truck.

thanks.

gemarsh · June 9, 2024

Unhook battery for 10 minutes?

kickass audio · June 9, 2024

try pressing the onstar button to see if it connects. Onstar had dropped my service after the demo period and my truck was paid for 3 years of remote service (remote start, unlock, lock, etc) with the original build sheet. I just had to call onstar and they corrected the problem in 5 minutes and it was activated and good to go. Usually the green light being out is 1 of 3 things wrong, either you have no service being detected due to a bad cell service area from AT&T, the roof antenna is faulty, or you simply do not have an active subscription so onstar cut you off.

Tomski12 · June 11, 2024

Thanks for the replies. Tried removing the negative lead for 10 minutes. No luck.

Tried pushing the Onstar button. no green light. Service is paid for.

SPASierra · June 15, 2024

On 6/10/2024 at 11:52 PM, Tomski12 said:

Thanks for the replies. Tried removing the negative lead for 10 minutes. No luck.

Tried pushing the Onstar button. no green light. Service is paid for.

Your communication module probably failed. Pretty common issue. Dealer will have to replace it.

Big Mama · January 3, 2025

I know this is a very old post but i just bought a used ‘23 Sierra Denali and like yours, no light, no reply pushing the button and when i call Onstar they say go to the dealer. Also like you, i have no desire to waste time at the dealer. In my other GM vehicles Onstar always comes on when you push the button whether you have an active account or not. They just won’t help you unless you pay them.

Thanks