Yukon Denali - Driver's side running board light not working

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.

schrimsher242

TYF Newbie
Joined
Oct 28, 2024
Posts
5
Reaction score
0
Good morning all.

New to the forum, but have learned a lot so far!

Bought a 2023 Yukon Denali a couple months ago, and now that the days are getting shorter, I've noticed that the driver's side running board light doesn't work. (It's just the LED strip on the bottom that doesn't work, the running boards themselves deploy and stow properly). I did find the other threads about the settings controlling when it comes on (locator light toggle and exit illumination duration) and was able to confirm that the passenger side running board and the backup lights come on when the feature says they should.

I did a quick check underneath and the wiring harness looks to be connected and undamaged. (I'm referring to the black/red wire bundle that goes into the front of the running board itself and runs to the larger connector near the motor.) The bumper to bumper warranty is already expired, so I'm a little afraid of what the dealer is going to tell me is wrong with it. Is there anything else quick/simple I could check?

I looked at the fuse descriptions but just saw some non-descript "exterior lighting module 1, 2, 3, 7, etc." so I'm not sure if any of those only control the light or if the light is part of the larger running board system. No fuses look to be blown, though.

Thanks,
Chris
 
OP
OP
S

schrimsher242

TYF Newbie
Joined
Oct 28, 2024
Posts
5
Reaction score
0
Update: As I kept looking into this, I ran across the forum post below, sounds like it might be related and a common issue due to a bad seal. My wife is driving the Yukon right now but I'll take a look for corrosion / water when she gets back.

 

justchecking

Supporting Member
Military
Joined
Jul 18, 2021
Posts
390
Reaction score
1,108
Location
SW Ohio
Good morning all.

New to the forum, but have learned a lot so far!

Bought a 2023 Yukon Denali a couple months ago, and now that the days are getting shorter, I've noticed that the driver's side running board light doesn't work. (It's just the LED strip on the bottom that doesn't work, the running boards themselves deploy and stow properly). I did find the other threads about the settings controlling when it comes on (locator light toggle and exit illumination duration) and was able to confirm that the passenger side running board and the backup lights come on when the feature says they should.

I did a quick check underneath and the wiring harness looks to be connected and undamaged. (I'm referring to the black/red wire bundle that goes into the front of the running board itself and runs to the larger connector near the motor.) The bumper to bumper warranty is already expired, so I'm a little afraid of what the dealer is going to tell me is wrong with it. Is there anything else quick/simple I could check?

I looked at the fuse descriptions but just saw some non-descript "exterior lighting module 1, 2, 3, 7, etc." so I'm not sure if any of those only control the light or if the light is part of the larger running board system. No fuses look to be blown, though.

Thanks,
Chris
Welcome to the forum from SW Ohio. I shopped Jake Sweeney before I bought my 2019 from Columbia Chevrolet.
 
OP
OP
S

schrimsher242

TYF Newbie
Joined
Oct 28, 2024
Posts
5
Reaction score
0
If it s a 23 and you are less than 36k miles, take it to the dealer and let your warranty take care of it.
Unfortunately it's 44k miles and beyond the factory bumper to bumper warranty. I bought the GM Protection Plan but it specifically excludes lighting. I'm probably going to have to take it to the dealer though. I got my volt meter out over the weekend, and it shows 0.6v on both sides (working and non-working), so I suspect either it's a bad LED strip or I'm getting a bad reading because there's more than simple voltage turning the LEDs on.
 

Forum statistics

Threads
132,037
Posts
1,861,367
Members
96,485
Latest member
ldiddy
Top