Always on USB Power?

redwngr · May 28, 2023

Interesting.

My 21 has 12 v power ports. (and the 120V shared 400W outlets)

2023 owners manual shows 12v power ports.

I have a '23 being shipped. I'm curious to see if it has 12v port(s).

repairman54 · May 29, 2023

13 hours ago, redwngr said:

Interesting.

My 21 has 12 v power ports. (and the 120V shared 400W outlets)

2023 owners manual shows 12v power ports.

I have a '23 being shipped. I'm curious to see if it has 12v port(s).

No standard round 12v ports in my '23 LTZ Z71 crew. Just USB in dash and console. 120v in console and bed. Has technology package. Running my V1 off the Savvy adapter in the OBD port.

Edited May 29, 2023 by repairman54

redwngr · May 29, 2023

Decided to see if there was any info about this in the fleet order guide.

It shows the 12V outlet is only installed/available on low trims.

On sierra

First column is the 'pro' trim.

On Silverado it comes on the WT, Custom and Custom Trailboss

So it would be in the Owners Manuals -- and not be on the high trim trucks mentioned in other posts.

Perhaps also explains the OM section discussing fuse location changes -- and the lack of available connection on higher trims that will not have the 12v pot.

Guess I'm won't be running the 12v cooler with the new truck when it arrives

Edited May 29, 2023 by redwngr

MrMagloo · May 30, 2023

On 5/29/2023 at 12:07 PM, redwngr said:

Decided to see if there was any info about this in the fleet order guide.

It shows the 12V outlet is only installed/available on low trims.

On sierra

First column is the 'pro' trim.

On Silverado it comes on the WT, Custom and Custom Trailboss

So it would be in the Owners Manuals -- and not be on the high trim trucks mentioned in other posts.

Perhaps also explains the OM section discussing fuse location changes -- and the lack of available connection on higher trims that will not have the 12v pot.

Guess I'm won't be running the 12v cooler with the new truck when it arrives

Yes, I was pretty shocked on my ride home and realized I had no 12v port. Bizarre. At least there is a 120v outlet that perhaps can be used for the cooler?

gemarsh · May 31, 2023

16 hours ago, MrMagloo said:

Yes, I was pretty shocked on my ride home and realized I had no 12v port. Bizarre. At least there is a 120v outlet that perhaps can be used for the cooler?

He could, if'n his cooler only pulls a tad over 3 amps. That 120v receptacle is about as worthless as t!ts on a boar.

Edited May 31, 2023 by gemarsh
Anti-spelling

jashaw · July 3, 2023

I assume nobody has found a constant power source on from the passenger side box?

I would like to install some extra footwear lighting on my dad's 2023 LT silverado. Using the X1 BCM connector's pin #1 12v as a trigger for the relay, and power the lights via the F28. Avoiding running a wire from the battery.

I put my meter lead down the empty fuse hole to the circuit board, while the truck was off, and was able to see 18v on the meter.

The F28 socket on the circuit board DOES get power constantly.... but the prong to plug something in to it is not present.

repairman54 · July 3, 2023

Trim down a 1/4'' male spade terminal to fit the hot side in the box and an inline fuse to protect the circuit at the box.

jashaw · July 3, 2023

It would need to be soldered to the board. Not feeling that too much. I might have tried it if it were my truck.

Edited July 4, 2023 by jashaw

Jay dog · July 30, 2023

This sucks, I can't get my 2023 silverado to charge my phone when the truck is off....now I wish I kept my 2022....no way I can tell to make the 2023 charge when it's off...damn gm...always gotta screw ****** up.

MrMagloo · July 31, 2023

19 hours ago, Jay dog said:

This sucks, I can't get my 2023 silverado to charge my phone when the truck is off....now I wish I kept my 2022....no way I can tell to make the 2023 charge when it's off...damn gm...always gotta screw ****** up.

I ended up mounting an auxiliary 5v port with full time power. Works great. But yes, it's extremely frustrating they took away the 12v outlet, and the ability to select full time power with the F27/28 fuse. Dumb move.

DTByouknowme · February 11

Looking at this post(kinda old). I'm in the same boat. I want power full time to an USB port or something. Every other Chevy I've owned has had that. I have a 23 custom refresh. And they certainly got rid of that extra prong on f28. This suck cause you could have fulltime power to your socket and you could tap into that extra prong with a spade connector to power add on accessories with switched power. It was perfect cause it was set up for 50 amps. Also, my 23 does have a 12v cig lighter jack.

Mayo · July 2

Has anyone tried jumping the circuit on the K2 relay? ie putting a jumper wire across the normally open circuit .

Edited July 2 by Mayo

Mayo · July 16

So I tried jumping K2 port 30-87. With the key off I had power to fuse 27, but no power to usb outlet.

I am thinking it is going to be a software fix.

redwngr · July 16

The F27 / F28 thing is so you have a choice -- RAP or continuous

If you want the power to supplied as RAP use the default -- F27

If you want to switch it to continuous power -- pull the block and put it back so it uses F28.

F27 and F28 power the same places, so if F28 is powered, the RAP function cannot shut those locations off.

BM68 · August 14

On 7/16/2024 at 7:34 PM, redwngr said:

The F27 / F28 thing is so you have a choice -- RAP or continuous

If you want the power to supplied as RAP use the default -- F27

If you want to switch it to continuous power -- pull the block and put it back so it uses F28.

F27 and F28 power the same places, so if F28 is powered, the RAP function cannot shut those locations off.

Im having the same issue.

Why cant I just add a prong with constant power to where it's missing on my 2023? Shouldn't doing that send constant power to all USBs all the time?