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dmproske

how to disable daytime running lights

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I tried the search feature, but got an error page.

 

Anyone know what fuse to pull to disable the daytime running lights on an 05 Envoy?

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I tried the search feature, but got an error page.

 

Anyone know what fuse to pull to disable the daytime running lights on an 05 Envoy?

 

 

 

 

Not sure which fuse to pull, but if you turn the headlamp knob all the way left the DRL's will be turned off. Need to do this everytime though. :thumbs:

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Yeah I know, I can remember to do that on my sierra HD, but I don't think the wife will remember to do that everytime in the envoy. I have some Silverstar bulbs that I want to put in the envoy, but no need to run those expesnive bulbs all the time during the day...

 

I found a fuse that disables the DRL, but also disables the normal headlight function.

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I know in the pickups you can turn the "Dome Override" button on and off for I think (2) cycles and the DRLs will remain off until you restart the vehicle. I don't know if the Envoy has such a button, but give it a try if it does

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pull the DRL relay out of the underhood fuse center.

 

 

 

 

Good luck with that. There is no DRL relay. There are only two relays related to headlamps, the HDM relay and the HIGH beam relay. The HDM "relay" looks for all the world like a relay, but it's really an electronic module.

 

The BCM provides a pulse width modulated ground signal to this HDM module to control the low beams. If the BCM wants DRLs, it provides a 85% duty cycle. For normal low beams, 100% duty cycle or 0% for off.

 

No way you're going to easily defeat these since there's no separate circuit for the DRLs. Defeat the DRLs and you'll have no low beams.

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Unfortunatly disabling the DRL's isn't as sinple as pulling the fuse however the DRL's should be able to be disabled by grounding the DRL defeat switch signal from the BCM. It is the Lt green wire coming into the headlamp switch on the 12 cavity connector pin F. Grounding that wire should stop your DRL's from coming on.

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pull the DRL relay out of the underhood fuse center.

 

 

 

 

Good luck with that. There is no DRL relay. There are only two relays related to headlamps, the HDM relay and the HIGH beam relay. The HDM "relay" looks for all the world like a relay, but it's really an electronic module.

 

The BCM provides a pulse width modulated ground signal to this HDM module to control the low beams. If the BCM wants DRLs, it provides a 85% duty cycle. For normal low beams, 100% duty cycle or 0% for off.

 

No way you're going to easily defeat these since there's no separate circuit for the DRLs. Defeat the DRLs and you'll have no low beams.

 

 

 

If i were to ask the tech to re-proghram the bcm with the t62 rpo instead of the t61 would that resolve my drl issues ? i need to install an hid kit, but i don't want to start installing more hardware than i need to...

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I finally figured out how to disable the lights.

 

On my 2008 I pulled the dash pod off. Took the switch out and took the spring that makes the knob turn back to the on position. With this spring removed the knob stays in the off position. Most of my driving is done during the day so this fits my situation better.

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I have a 2008 Denali. Would this work for me? I hate the DRL's, since I just converted my lights to HID.

 

I finally figured out how to disable the lights.

 

On my 2008 I pulled the dash pod off. Took the switch out and took the spring that makes the knob turn back to the on position. With this spring removed the knob stays in the off position. Most of my driving is done during the day so this fits my situation better.

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I have a 2008 Denali. Would this work for me? I hate the DRL's, since I just converted my lights to HID.

 

I finally figured out how to disable the lights.

 

On my 2008 I pulled the dash pod off. Took the switch out and took the spring that makes the knob turn back to the on position. With this spring removed the knob stays in the off position. Most of my driving is done during the day so this fits my situation better.

 

 

As long as the switch is the same I do not see why not. I havn't seen the Denali interior.

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I know this is old thread, just wanted to throw in my $.02. I don't think the same procedure will work for the Envoy that it will for a Sierra.

 

I have an '05 Envoy and I bought a DRL Killer (there's a guy on TrailVoy that makes them - tblazed). You have to "kill" the DRL at the BCM within the Fuse Box under the rear seat.

 

Here's a picture of the DRL Killer installed:

 

DRLKiller1.jpg

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