Interior Lighting not working

LowCrewCab · November 21, 2023

I have a 2019 GMC Denali and all of the interior lights stopped working including the center console light and visor lights. The open door off switch in the upper center console is not ON but he LED when its off does work. Plus nothing happens when I press the on/off light button next to it in the upper center console.

I checked all fuses in all three fuse boxes, but I am not sure exactly which fuse controls the interior lighting as the descriptions on the fuse box lids are not all that great.

So my question is which fuse/relay controls the interior lighting?

I appreciate any help. Thanks.

David Krueger · November 23, 2023

There's a switch in the cab that turns off all of the interior lights. Find the switch and turn them back on. Owners manual will tell you where it is. It used to be on the dash left side of the steering wheel. I think that in my 21 Sierra, it's on the upper console by the rearview mirror.

LowCrewCab · November 27, 2023

Pushing the interior light button in the upper console does not turn the lights on. That is why I am looking for the fuse that controls that button.

rmboswhaler · November 28, 2023

I had the same problem in my 23 Gmc At4X, but also the sunroof wasn't working. Open and close all doors, then check again. It wasn't a fuse or anything. The system had timed out because of an open door. It looked closed but didn't reset the timer. I told the dealer and he had never heard of that.

LowCrewCab · November 28, 2023

Thanks. I will give that a try tonight when I get home.

I also made an appointment with the dealer for next week since it's still under warranty. Cross fingers its something I am overlooking and an easy fix.

LowCrewCab · December 7, 2023

So I couldn't figure it out so it's now day 4 at dealership and they still are not sure what the issue is. The technician thinks its a loose pin on the connector that goes to the BCM. Apparently there has been 10 technical bulletins with this same issue. Crossing fingers they call tomorrow with a positive update.

rmboswhaler · December 7, 2023

Sorry my suggestion didn't work

Mshawn · December 9, 2023

Hey im curious about the outcome . Will you please update us when you get it repaired? Thank you in advance.

LowCrewCab · December 11, 2023

Well the dealership finally figured it out. The issue turned out to be a short to ground on the red and black wires for the drivers side visor. Apparently the wiring harness was rubbing against the body behind the headliner. They had to replace the entire visor. After 5 days it's fixed.

Edited December 11, 2023 by LowCrewCab

Steve-2019 · December 11, 2023

Thanks for the update and good to hear they figured out for you.

Humaid_610 · November 9, 2024

On 12/12/2023 at 1:26 AM, LowCrewCab said:

Well the dealership finally figured it out. The issue turned out to be a short to ground on the red and black wires for the drivers side visor. Apparently the wiring harness was rubbing against the body behind the headliner. They had to replace the entire visor. After 5 days it's fixed.

Hi ihave the same issue but i cant figure out can you please send me some picture to see the wires and fuse for the visor.