tailight Factory LED Tailight Aftermarket Replacement Help

[Julian F]

Hey,

I was wondering if anyone has any luck finding aftermarket tailight replacements for the 2014 sierra 1500 with OEM factory LED tailights.

Literally very very rare to find. Only ever find Halogen replacement. OR is there a way to fit the Halogen OEM setup into the truck?? I've looked everywhere. No straight answers. 

 

The problem I have is I bought the truck used in 2016 at 36k. The goof that had it before installed some aftermarket tailights that worked with LED factory harness, which I believe are these ones:

 

https://www.tdotperformance.ca/products/spyder-automotive-5080707-led-tail-lights-black-smoke.html?gad_source=1&gad_campaignid=16186571898&gbraid=0AAAAAD1t1bWUgzQKgfKbn9BDfh-URpODA&gclid=Cj0KCQjw953DBhCyARIsANhIZoZzYyW4UlpMKUR-oso_Wagh_SW8lo3LMvtlENuPAXInfryh5Cdp_dsaAtTHEALw_wcB#2014-gmc-sierra_1500?utm_source=google&utm_medium=cpc&utm_campaign=ToF_Search_PerformanceMax_&utm_term=_

 

The resistors on PCBs rotted out and I managed to find the same ones at a wrecker 4 years later. Started with hyperflashing developing in high heat conditions. Well low an behold, the replacements I put in are doing the same now. I need a fix. 

 

Because tailights that fit factory LED are so hard to find I tried to see what it would take to change the truck over to OEM Halogen harness. Is it just a wiring harness?? Or does BCM need flashing aswell?

 

I've called dealers and they want diagnostic fee.. Parts guy told me BCM needs flashing possibly but didn't know forsure. GM technical support says "We recommend you don't alter your vehicle from factory." thanks GM...

 

Any help would be greatly appreciated. I'm at my wits end and I don't want hyperflashing anymore. 

Edited July 5, 2025 by Julian F
Added tags

[MikeBMW]

You could check out Alpharex.
Tail lights for LED stock
I have them on my truck though mine weren't LED from stock:

 

[BigBlue2014]

On 7/10/2025 at 2:39 AM, MikeBMW said:

You could check out Alpharex.
Tail lights for LED stock
I have them on my truck though mine weren't LED from stock:

 

I've never seen a 2014 come with stock LED Tails - I think that was introduced in 2016

[newdude]

On 7/4/2025 at 6:50 AM, Julian F said:

Hey,

I was wondering if anyone has any luck finding aftermarket tailight replacements for the 2014 sierra 1500 with OEM factory LED tailights.

Literally very very rare to find. Only ever find Halogen replacement. OR is there a way to fit the Halogen OEM setup into the truck?? I've looked everywhere. No straight answers. 

 

The problem I have is I bought the truck used in 2016 at 36k. The goof that had it before installed some aftermarket tailights that worked with LED factory harness, which I believe are these ones:

 

https://www.tdotperformance.ca/products/spyder-automotive-5080707-led-tail-lights-black-smoke.html?gad_source=1&gad_campaignid=16186571898&gbraid=0AAAAAD1t1bWUgzQKgfKbn9BDfh-URpODA&gclid=Cj0KCQjw953DBhCyARIsANhIZoZzYyW4UlpMKUR-oso_Wagh_SW8lo3LMvtlENuPAXInfryh5Cdp_dsaAtTHEALw_wcB#2014-gmc-sierra_1500?utm_source=google&utm_medium=cpc&utm_campaign=ToF_Search_PerformanceMax_&utm_term=_

 

The resistors on PCBs rotted out and I managed to find the same ones at a wrecker 4 years later. Started with hyperflashing developing in high heat conditions. Well low an behold, the replacements I put in are doing the same now. I need a fix. 

 

Because tailights that fit factory LED are so hard to find I tried to see what it would take to change the truck over to OEM Halogen harness. Is it just a wiring harness?? Or does BCM need flashing aswell?

 

I've called dealers and they want diagnostic fee.. Parts guy told me BCM needs flashing possibly but didn't know forsure. GM technical support says "We recommend you don't alter your vehicle from factory." thanks GM...

 

Any help would be greatly appreciated. I'm at my wits end and I don't want hyperflashing anymore. 

 

 

2014 never had factory LED tail lights unless the PO swapped them in at some point.  

[Julian F]

On 7/14/2025 at 1:34 PM, newdude said:

 

 

2014 never had factory LED tail lights unless the PO swapped them in at some point.  

Okay thanks for the info. I'll talk with dealer and see if it in fact had it factory. I was thinking that too. Only reason I was convinced was when I ordered some that were Halogen only they never worked properly and had to return. The second set I acquired that were same as ones the PO put in were advertised as LED factory installion only and they worked  

 

Thanks again. I'll update when I find out.