21+ Tahoe LED Tail Lights

[BlaineBug]

Thanks. I'll reach out to Lasfit and see if these are error free. The 21-23s typically require a resistor which Lasfit says they don't do, but maybe I'm wrong.

That seller offers free 30 day returns. The seller pays for return shipping regardless of the reason you return too.

 

[car_l0st]

The 3 below gave an error when the car is put in reverse.

LASFIT 921 LED Bulb Reverse

https://a.co/d/i1b2tpc

Alla Lighting 2600lm T15 Wedge

https://a.co/d/7fDh584

Alla Lighting 912 921 LED Bulbs

https://a.co/d/0nzWX3f

 

[Deuce16GMCs]

The 3 below gave an error when the car is put in reverse.

LASFIT 921 LED Bulb Reverse

https://a.co/d/i1b2tpc

Alla Lighting 2600lm T15 Wedge

https://a.co/d/7fDh584

Alla Lighting 912 921 LED Bulbs

https://a.co/d/0nzWX3f

It's hard to believe that no compu, not even LASFIT, has made a reverse LED bulb with a built in resistor.

Who ever does this will make a ton of money. Crazy it's been 3 years in this model and no one has tried.

 

[BlaineBug]

It's hard to believe that no compu, not even LASFIT, has made a reverse LED bulb with a built in resistor.

Who ever does this will make a ton of money. Crazy it's been 3 years in this model and no one has tried.

Have you tried the Lasfit bulbs? My 2019 doesn't give me any errors and they've been in there for 2 years now.

 

[Deuce16GMCs]

Have you tried the Lasfit bulbs? My 2019 doesn't give me any errors and they've been in there for 2 years now.

Blaine,

2019 is a different vehicle.

2021,2022,2023's tail light have a different voltage output.

car_l0st, in post 22 stated they used the Lasfit bulbs and they gave the dash voltage error.

If you work for LASFIT, or know someone there, please let us know. We'd appreciate it if they can make a 921 bulb with a built in resistor.

 

[BlaineBug]

Blaine,

2019 is a different vehicle.

2021,2022,2023's tail light have a different voltage output.

car_l0st, in post 22 stated they used the Lasfit bulbs and they gave the dash voltage error.

If you work for LASFIT, or know someone there, please let us know. We'd appreciate it if they can make a 921 bulb with a built in resistor.

I don't work for them. But my search shows that the 2021+ use the same factory reverse bulb as the 2015-2020.

 

[Deuce16GMCs]

I don't work for them. But my search shows that the 2021+ use the same factory reverse bulb as the 2015-2020.

Yes, you are correct. It's the same bulb number.

BUT, on the 2021-2023, GM is using a different chip for the voltage regulator on the tail lights.

Since an LED uses LESS power (5V) than an incandescent bulb (12V), the trucks voltage regulator identifies that the the tail light is using an LED (lower voltage) and gives an error on the dash to "Check you bulb" because it thinks the incandescent bulb may be burned out at 5V.

Therefore....only on the 21-23...if you use an LED, even LASFIT, you get an error on the dash.

The only way to remedy this is by using a resistor connected inline to the bulb that increases the voltage to 12V to make the truck "think" it's an incandescent bulb.

What everyone is looking for is an LED bulb that already puts out 12Vs or has a resistor built in to to avoid the dash board error.

 

[BlaineBug]

https://www.amazon.com/SOCAL-LED-Re...cphy=9016188&hvtargid=pla-1983354472512&psc=1

How about something like this? If this worked, and it was my truck, I would hardwire it to the truck by soldering and shrink wrapping the connection to eliminate the extra plug connections.

 

[BlaineBug]

https://www.ebay.com/itm/295006635878?hash=item44afc40766:g:W1UAAOSwwM9ikWqr&amdata=enc:AQAHAAABEFPltDx1p88AacVr+/YcnlgXwayN8AE6WyKbmUPZTkeMuyAu0mGy+dBCAwNfmP0hjnawH8AEIRtas0Hfqf4NSkPKs0QrSSBHV8vmATzeXYCRBrhKyu4nihW9T1K1aBsMoocY5d92U126Sxz0a01g7W8GJOrXR9lBaJN9Uc603DcKNrJ7vbMiRifPZQy5QDAXbQodZfV6pINloiAbWBFvMyd5CACn/Un7SJM+omMYnAg/zHxBciAdJI1L/XDNkS8nUoMvoSrNtSaOAJGZi3vH3DF5HPSGgsf4wbvqiLexFpd+7a18NX7Ir7I6BlKtgMQwG7suxZLqmGsThy+H03AcvhthsZSJ+H0yqWWxSsSyY6Ah|tkp:Bk9SR7yNnovcYQ

A little cheaper on eBay.

You might have to customize the harness by cutting off their bulb sockets and re-using the OEM Chevrolet bulb sockets in their place. An easy project for someone skilled with soldering electronics though.

I personally would NOT trust their bulb plugs and sockets by the looks of them though, but if the resistor box is all you need, it's easy enough to wire in-line with your Chevrolet factory reverse light circuitry.

 

[BlaineBug]

Any luck?

 

[Tenscourts]

Ive

I've done the requested testing and reported my results. I'm hoping they can come up with something functional soon.

I finally got the harnesses in and the connectors for 23 Tahoe's are different than 21-22 so the harness has the wrong connectors. Mine is a 22. Apparently they changed it for 23. I should have replacements by Friday. These harnesses go under the rear bumper so there is no chance of melting the plastic tail lamp housing from the resistors getting hot.

 

[Deuce16GMCs]

I finally got the harnesses in and the connectors for 23 Tahoe's are different than 21-22 so the harness has the wrong connectors. Mine is a 22. Apparently they changed it for 23. I should have replacements by Friday. These harnesses go under the rear bumper so there is no chance of melting the plastic tail lamp housing from the resistors getting hot.

Are these harnesses the house the resistors? Does it include the bulb?

 

[car_l0st]

All this just to install some LED bulbs like it's 1999

 

[Deuce16GMCs]

All this just to install some LED bulbs like it's 1999

It's crazy.

 

[Tenscourts]

Are these harnesses the house the resistors? Does it include the bulb?

The tail light harnesses dump out under the rear bumper where they connect to another harness. Not sure if it's the chassis harness or the body harness but either way it's a factory connector. I'm working with a reputable company that is making plug and play jumper harnesses for each side. These jumpers have the resistors built in so in theory you can use any LED bulbs. I've seen some people tap resistors in behind the tail lights but resistors get hot and could melt the tail light housing. And I do believe lasfit has a bulb with a builtin resistor for one of the locations but I'm pretty sure they tell you if it runs long enough it will overheat and hyperflash. This harness to me would be a more robust solution and resolve the issue for all the bulbs whereas the Lasfit bulb only works for one of the three bulbs. Hopefully I can report success this weekend and let everyone know where they can buy these harnesses. On that note do any of you have a 23 model. It appears gm switch from 6 pin to 8 pin on the 23 models. It would be great if someone could look under there rear bumper of a 23 disconnect the tail light harness and take a picture to verify the number of pins and maybe the wire colors.

 

[Deuce16GMCs]

I can look when get back home Friday.

 

[car_l0st]

Is this it? Best I could do for now.

 

[Tenscourts]

Is this it? Best I could do for now.

View attachment 396293View attachment 396294View attachment 396295View attachment 396296View attachment 396297

Yes that's it. Looks like a 6 pin as well. And yours is a 23 year model?

 

[Tenscourts]

The harnesses showed up today. I did install them and test and I think I have one more resistor than needed which may be causing some issues. I'm hoping to verify this tomorrow and resolve that issue if my suspicions are confirmed. I'll report back tomorrow Evening hopefully.

 

[car_l0st]

Yes that's it. Looks like a 6 pin as well. And yours is a 23 year model?

Yes. 23 Premier.