1999 - 2025 GM Auto Fogs Mod

Name: 1999 - 2025 GM Auto Fogs Mod
Brand: Boost Auto Parts
SKU: 1844CX
Price: 27.45 USD
Availability: InStock
Rating: 4.842990654 (535 reviews)

Activate your fog lights automatically any time the parking lights are on.

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This wiring kit allows your fog lights to come on automatically any time the park lights come on. The kit fits various GM vehicles from 1999 - 2025 and is extremely easy to install and takes less than 10 minutes following our installation video.

Vehicle fitment	Fitment note

Link to Video A (2:51): https://youtu.be/5luAkfygqD8

Written Install Instructions: 1999-2002 GM Auto Fogs Mod

Video A applies to the following vehicles:

*This mod only works in the AUTO mode for these vehicles

1999-2002 Silverado & Sierra (All Models excluding C/K trucks)
2000-2002 Tahoe & Suburban
2000-2002 Yukon & Yukon XL
2000-2002 Escalade
2002 Avalanche

Link to Video B (3:22): https://youtu.be/GoBXigZoV8k

Written Install Instructions: 2003-2007 GM Auto Fogs Mod

Video B applies to the following vehicles:

2003-2006 Silverado & Sierra 1500/2500HD/3500HD
2007 Classic Silverado & Sierra 1500/2500HD/3500HD
2003-2006 Tahoe & Suburban
2003-2006 Yukon & Yukon XL
2003-2006 Escalade
2003-2006 Avalanche

Link to Video C (4:00): https://youtu.be/UGHHbHgvoyo

Written Install Instructions: 2007.5-2014 GM Auto Fogs Mod

Video C applies to the following vehicles:

2007.5-2013 Silverado & Sierra 1500/2500HD/3500HD
2014 Silverado & Sierra (2500HD/3500HD ONLY)
2007-2014 Tahoe & Suburban
2007-2014 Yukon & Yukon XL
2007-2014 Escalade
2007-2013 Avalanche

Link to Video D (3:07): https://youtu.be/PE2gv9YCNXU

Written Install Instructions: 2014-2019 GM Auto Fogs Mod

Video D applies to the following vehicles:

2014 Silverado & Sierra 1500
2015-2018 Silverado & Sierra 1500/2500HD/3500HD
2019 Silverado & Sierra (2500HD/3500HD ONLY)
2015-2020 Tahoe & Suburban
2015-2020 Yukon & Yukon XL

Link to Video E (3:23): https://youtu.be/X2lEyH-jO1o

Written Install Instructions: 2019+ GM Auto Fogs Mod

Video E applies to the following vehicles:

2019-2021 Silverado & Sierra 1500
2022 Silverado 1500 LD & Sierra 1500 LTD
2020-2023 Silverado & Sierra 2500HD/3500HD

Link to Install Video F (2:56): https://youtu.be/6U3uph74_9o

Video F applies to the following vehicles:

2022-2025 Silverado 1500 Refreshed
2022-2025 Sierra 1500 Refreshed
2024-2025 Silverado & Sierra 2500HD/3500HD

Link to Install Video G (3:56): https://youtu.be/Hb8_g5qrQpM

Video G applies to the following vehicles:

2023-2024 Chevy Colorado
2023-2024 GMC Canyon

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FAQ

How will the lights function after I install this?

Any time the park lamps come on your fog lights will come on. This means if you leave your switch in "auto" mode, the fog lights will always be on at night.

How long does installation take?

About 5 minutes following our video!

Help! I installed it and it's not working properly.

Please verify that you installed it based on the pin locations, NOT the wire colors. GM sometimes changes wire colors however the pin locations always remain the same.

Please contact us if you have verified you connected to the proper pin locations and are still having issues.

Reviews

Customer Reviews

4.8 Based on 532 Reviews

5 ★

94%

500

4 ★

2%

10

3 ★

1%

4

2 ★

1%

6

1 ★

2%

12

Customer Photos

1999 - 2025 GM Auto Fogs Mod - Customer Photo From Cecil Curtis

1999 - 2025 GM Auto Fogs Mod - Customer Photo From Aaron Elliott

1999 - 2025 GM Auto Fogs Mod - Customer Photo From MATTHEW SAGE

1999 - 2025 GM Auto Fogs Mod - Customer Photo From MITCHELL N NIMMOOR JR

1999 - 2025 GM Auto Fogs Mod - Customer Photo From Brian Garibay

1999 - 2025 GM Auto Fogs Mod - Customer Photo From Jeffrey Moser

1999 - 2025 GM Auto Fogs Mod - Customer Photo From Anthony Padgett

1999 - 2025 GM Auto Fogs Mod - Customer Photo From Nick Morris

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Reviews
Questions

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DR

04/16/2025

DAVID R.

United States

Auto Fog Mod

Easy to install, works great

1999 - 2025 GM Auto Fogs Mod

RP

04/01/2025

Ricky P.

United States

Great Product

I had a great experience with this item and it was super simple to install.

1999 - 2025 GM Auto Fogs Mod

RS

03/14/2025

Richard S.

United States

I love it

I really liked the product.

1999 - 2025 GM Auto Fogs Mod

CC

03/14/2025

Cecil C.

United States

Awesome Support

Shipped and got here on time. Watched the video on how to install and make fog lights stay on with parking lights. I have a 2025 Chevy 2500HD. Ran into a minor glitch with the setup but emailed support and got it taken care of quick. Love it so much I just ordered the cargo/reverse light modification. Can’t wait to check it out.

1999 - 2025 GM Auto Fogs Mod

BB

03/14/2025

Brian B.

United States

Finally fogs

Great product, super easy install. Works exactly as advertised.

1999 - 2025 GM Auto Fogs Mod

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K

Keith 02/21/2025

I have already installed the all light mod. Can I add this one as well or no it will cause issues ?

Answers (1)

Boost Auto Parts 02/21/2025

The modules will not interfere with each other and can be used in tandem.

MV

Mike V. 02/20/2025

I bought these but decided i dont want the auto mod. With this be universal? Are all the jumper short one wire universal? Will the jumper for this mod work for this mod? https://boostautoparts.com/products/reverse

Answers (1)

Boost Auto Parts 02/20/2025

Yes, this mod can work as auto fogs, all lights, or third brake light bed cargo and reverse. You will simply need to watch the install video for the one you would like.

D

Dbcj26 02/16/2025

Can you install both the auto fog and the all lights mod to the same vehicle?

Answers (1)

Anonymous 02/17/2025

Yes, the modules will not interfere with each other and can be used in tandem.

PP

Paul P. 02/05/2025

Do you have wiring configuration and the directional information for 2025 gmc denali ultimate

Answers (1)

Boost Auto Parts 02/05/2025

Yes, the video to install this mod on your 2025 gmc Denali ultimate will be below. https://youtu.be/6U3uph74_9o

LI

Luis I. 10/07/2024

My chevy is a 2014 Silverado Lt but the video for installation is from a different model like 2019 if I follow the video is going to work?

Answers (1)

Boost Auto Parts 10/08/2024

If you truck is a 2014 1500, you need to follow the video for 2014-2019 trucks. If your truck is a 2014 2500 or 3500, you need to follow the video for 2007.5-2014 trucks. If neither of these match, please reach out to us at support@boostautoparts.com.

JM

John M. 08/26/2024

Will I still be able to activate them manually during the day, because having a custom truck, and I ride with them on ?

Answers (1)

Boost Auto Parts 08/26/2024

Yes, you will still be able to command the fog lights on during the day or anytime your parking/headlights are not on.

C

Chris 02/06/2024

I have a 2023 Chevy Silverado high country 3500 hd diesel what wires would I use

Answers (1)

Boost Auto Parts 02/06/2024

For your application, you would follow the video linked here: https://youtu.be/X2lEyH-jO1o You would connect to the wires in pin 10 and pin 22 on the brown BCM connector. The blue ring would face the wire in pin 10.

RS

Rich S. 09/24/2023

Can this harness be used to wire the fog lights to the daytime running lights so that any time the vehicle is running those fog lights will come on?

Answers (1)

Boost Auto Parts 09/25/2023

Unfortunately, this mod will not work with your daytime running lights. This mod will only turn on your fog lights with your park lights. Please reach out to our sales team at sales@boostautoparts.com for further assistance.

TH

Tom H. 02/28/2021

Do you loose the fog light indicator on the dash once the kit is installed?

Answers (1)

Boost Auto Parts 03/01/2021

The fog lamp indicator would not illuminate with the module installed. It will illuminate if the fog lights are manually commanded on.

S

Steve 01/25/2021

I have a 2021 Yukon Denali, their aren't wires on those pins shown to splice to on the connector. Even pin out plug map is different , what two pins do I need to jumper ?

Answers (1)

Boost Auto Parts 01/25/2021

Unfortunately our all lights mod does not operate with 2021+ SUV's.

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1999 - 2025 GM Auto Fogs Mod

FAQ

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Reviews

Auto Fog Mod

Great Product

I love it

Awesome Support

Finally fogs