2015 Sierra Daytime Running light question

[99Mastercraft]

Can someone educate me on daytime running lights on the 14 & 15 Sierra’s? I thought the DRL were white like a 5000k color temperature LED?

 

this truck seems to have a halogen orangish looking daytime running light, is there a separate bulb that lights up for the DRL?

 

Edited January 8, 2018 by 99Mastercraft
Image

[Ryno12]

The DRL is bottom set of LEDs. They illuminate brightly during the day. When the headlights are on, the bottom row dims, and the top row comes on.
If you want to see what they look like, start the truck and put it in Neutral & set the parking brake. It’ll have to be daylight out for them to come on.

[99Mastercraft]

What happens if they burn out? Is it just bulbs you replace? Let’s say I wanted to put just a pure white LED in the main bulb, the top row is going to be an off color, is there a way to replace them as well?

 

[Ryno12]

If they went out, you’d have to replace the assembly. Otherwise, there’s aftermarket LED strips available but you have to open the headlight assembly to access them.

I have 5000k LED headlights in my 2014 Sierra Denali & they match the OEM LED strips (DRL) pretty well.

[newdude]

11 minutes ago, 99Mastercraft said:

What happens if they burn out? Is it just bulbs you replace? Let’s say I wanted to put just a pure white LED in the main bulb, the top row is going to be an off color, is there a way to replace them as well?

 

The headlight is what you replace if the LED strip quits, or if you can find an LED headlight repair specialist. 

 

In your picture above, you have all the lights on.  The dimmed LED strip is the DRL when the vehicle turns the DRLs on.  Anytime the lamp switch is out of AUTO, it dims.  If in AUTO, and the DRL is on, anytime the turn signal turns on, the DRL on that side momentarily shuts off. 

 

As far as color matching, the DRLs that GM has been using are in the 5000-6000K range it seems.  The 2016+ lamps look almost 6K.  I'd say if you try an LED headlamp in that range it would be fine. 

Edited January 8, 2018 by newdude

[newdude]

[99Mastercraft]

5 minutes ago, Ryno12 said:

If they went out, you’d have to replace the assembly. Otherwise, there’s aftermarket LED strips available but you have to open the headlight assembly to access them.

I have 5000k LED headlights in my 2014 Sierra Denali & they match the OEM LED strips (DRL) pretty well.

 

You wouldnt happen to have any photos would you? How is visibility at night?

 

Thanks for the quick replies guys 

[Ryno12]

 
You wouldnt happen to have any photos would you? How is visibility at night?
 
Thanks for the quick replies guys 

Sorry, I don’t at the moment. I can maybe take some pictures later, otherwise there’s a bunch online via a Google search.

The visibility with the 5000k lights is decent. I also have a set of OPT7 Fluxbeam X that are 6000k and I’m not impressed. I can’t tell if it’s just the color that gives the illusion of not being very bright or if the output just isn’t that good.

Overall, the headlights on the 14-15 Sierras pretty much suck. Supposedly HIDs are good but I just don’t want to deal with them.

[O_J_Simpson]

Check your part number on the assemble. GM made the switch early in the 2014 MY to more white DRLs.

[99Mastercraft]

15 minutes ago, O_J_Simpson said:

Check your part number on the assemble. GM made the switch early in the 2014 MY to more white DRLs.

 

I think that’s what’s happened because this just doesn’t look white to me 

[gusman]

Sorry to dig this thread a little from the dead... but I've been searching.  Does anyone know why the lower strip wouldn't be dimming when the running lights are activated?  It always used to dim to match the top row (2015) (I believe the newer ones the top row is white white vs yellowish dim)... but now it is staying the same DRL intensity whether I put the running lights on or not.  It looks funky.

 

(2015.5 SLT 2500)

 

Thanks!

[DWallyGMC]

Hey guys, what Headlight and fog light LED bulb combo do you recommend to match the DRLs?

[Joppy818]

If the DRL burn out will it throw a code. Just curios I have a denali and want to replace with regular lamps and want to know if i will have a problem putting in headlamps that dont have DRL?