right here $20 just like I mentioned, I use the same type of thing for my dash cam's.
12V to 5V Converter, DC-DC Step Down Module Power Adapter, USB C Cable with LED Display, Compatible with Raspberry Pi 4, Solar Energy, Car Power Converter,12v to 5v Step Down Converter. DC-DC Converters are widely used in low power consumption electronics to step-down from 24V/12V to 5V.
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then just grab a fuse tap adapter with leads and patch it to that for power, ground the black wire to the body and feed the wire up to where you need it
because gm now likes to use a zillion different fuse type just grab this multipack of taps and you are good to go
4 Types: Standard; Mini; Low Profile Mini; Micro2. Micro2(APT/ATR) Fuses. Dual-slot Fuse Holder: Provides 1 fuse holder to protect existing circuits and a second fuse holder to protect new circuit. Blue flexible socket tail, very easy to connect to any naked wires by only use a vise.
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the good thing about usb is it is "universal" so if that adapter plug angle doesn't work for you then you can use a adapter or get a different one they make them straight, 45 left, 45 right, whatever.
and in a pinch you could charge anything else usb with that same adapter all you need is the right plug, it comes with a usb-a adapter & extension adapter if you need a longer feed or just plug your cable currently going to the cigarette plug into this