2021 Tahoe - Always on USB

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Bthnc

TYF Newbie
Joined
Dec 15, 2020
Posts
16
Reaction score
3
Hi everyone,

On my 2021 Tahoe, all of my USB ports (and 12v lighter) seem to be RAP powered. I'd like to make these always on if possible -- on previous years it seemed they were either always on or could be changed by moving a fuse, but looking over the fuses I don't see this on the 2021 Tahoe, but I might be missing it. Thanks for any tips,

bth
 

Fast_AT4

RWM +1
Supporting Member
Joined
Mar 26, 2022
Posts
1,130
Reaction score
1,638
Location
SW Florida
Wouldnt always on end up killing your battery over time though? Curious what you are attaching to your USB that needs always on power source?
 
OP
OP
B

Bthnc

TYF Newbie
Joined
Dec 15, 2020
Posts
16
Reaction score
3
Power drain would be something to consider, but a car battery would provide enough power for my small devices to not really be a concern. But for my purpose: I do a lot of cycling / hiking / kayaking, sometimes over 1 day or 2 day trips using the truck as a base camp. Devices like blinky lights, small cameras, or headphones have tiny batteries so it's not uncommon to have a few of them because you need to swap them out as their runtime may only be a couple of hours. Some can charge to about 80% over half an hour, so it would be nice to just plug them in either over lunch or out for ride while the truck is off.

To be honest I kind of thought it was always on but realized the hard way my devices were only charging for a few minutes due to RAP.

I try to remember to bring a USB power pack, but just would be nice to be able use the ports.
 

krootz

TYF Newbie
Joined
May 10, 2024
Posts
1
Reaction score
1
Found it!
I tested it on my Yukon and it works.
I moved the fuse over in the panel and it powers my accessories while the truck is off.

There is one big fuse "50" in the 27/28 slot.
Move it to slot 28 for constant power.
Move it to slot 27 for ignition only power.
*Edit: Forgot to mention - this is the passenger side fuse panel
 

Attachments

  • 1000001602.jpg
    1000001602.jpg
    259.3 KB · Views: 8

Forum statistics

Threads
133,082
Posts
1,879,399
Members
98,046
Latest member
Dremar79

Latest posts

Top