Comment by rubatuga
1 year ago
The easiest way to disable this in a Chevrolet with OnStar is to pull the fuse (Fuse 38 under the dash for the Chevrolet Malibu 2024). Other options disconnecting the antenna (can still connect if strong signal), or pulling out the box/microphone (disassembly required). At least for the 2024 model CarPlay features seems to keep working, but I haven't tested Bluetooth yet.
There's somebody on YouTube describing the parts of the OnStar feature: https://youtu.be/TZILodhvjdw?feature=shared
> (can still connect if strong signal)
Wonder if that would still work if you additionally shunted the antenna with some kind of impedance matched load.
All the Hams scramble to grab a spare dummy load.
Many GM models used to have a bridge/jumper between the network daughter board and the rest of the car. Pretty easy and didn't affect anything else (sometimes the fuse for OnStar also covered your Bluetooth or voice commands).
I read that microphone in Bluetooth stops working (on Chevy bolt)