GM Modify Door Harness for Plug and Play Tow Mirrors - Silverado & Sierra (2019-2022)

GM Modify Door Harness for Plug and Play Tow Mirrors - Silverado & Sierra (2019-2022)

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Sale price $ 59.95

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What year is your truck?
Is your truck equipped with bed illumination lights?
These are lights that are mounted inside the bed of your truck to illuminate the cargo from within. There is a picture in the FAQ below.
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Sold as a set (kit covers both sides). This wiring kit adds the missing wires to your GM door harness for upgrading from small mirrors to towing mirrors. This is required for 2019 2020 2021 2022 Silverado and Sierra 1500 trucks upgrading to towing mirrors.

This kit adds the running lights, turn signals, and cargo lights features for the towing mirrors. This kit is all that is required for 2020+ Silverado or Sierra 1500 trucks originally equipped with bed illumination. 2019 trucks also need the RZY harness (reference below FAQ for more details).

Why spend $200+ on replacing your door harnesses when you can just add the missing wires for a fraction of the price? This harness can be used at a significant cost savings instead of installing GM OEM part numbers 84622369, 84622370, 84622376, 84622380, 84622371, 84622372


Fitment - This product fits the following vehicles (Including T1 New Body Style):

2019 Chevy Silverado 1500

2020 Chevy Silverado 1500

2021 Chevy Silverado 1500

2022 Chevy Silverado 1500 LD (More Info: LD v.s. Refreshed)

2019 GMC Sierra 1500

2020 GMC Sierra 1500

2021 GMC Sierra 1500

2022 GMC Sierra 1500 LTD (More Info: LTD v.s. Refreshed)


This harness is designed to work with 2019-2022 Silverado/Sierra 1500.

If you have a 2019 you will also need our RZY harness. You have the option to purchase it in the options above.

Please note, you must have power-adjusting mirrors for this harness to work (glass movement with switch). This does NOT work on 2022+ refreshed trucks.

This harness adds the turn signal, running light, and cargo light.

The features of your original mirrors will work plug and play, as long as you purchase towing mirrors also equipped with those features.

No, we do not currently have an upgrade path for power fold or spot lights.

Yes, but you will also need the RZY harness. You have the option to purchase it in the options above.

No! Our harnesses are specially designed to avoid the need for a reflash. Although the GM dealer may tell you it's necessary, it is NOT when using our harnesses.

Take a look in your bed and see if you have them. Those who don't originally have bed illumination require an additional harness (available in the options above).

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Customer Reviews
4.8 Based on 34 Reviews
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Ryan P.
United States United States

Product quality

I can’t say enough about the quality and shipping times absolutely great product now if only I didn’t cheap out and spent the money for the mirrors I’d be a lot happier soon I will be upgrading to the boostauto parts tow mirrors

Thomas I.
United States United States

Great wire set with the Right connection pins. They made installing my towing mirrors simple. Thanks Boost Auto. It was a great experience working with your staff. They are knowledgeable and caring.

CARLOS SVG verified by SHOP
United States United States
Osmar P.
United States United States


Thanks you guys , the wires were perfect fit

Boost Auto Parts GM Modify Door Harness for Plug and Play Tow Mirrors - Silverado & Sierra (2019-2022) Review
Jose L.
United States United States


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