2023 Sierra SLT 1500 taillight UPGRADE to 2024 Sierra 2500 HD

Frankielozano214 · November 18, 2024

Yes you will need the new 2024 taillight OEM harnesses (one goes to each light) plus the conversion harness. Only the 2024 Denali/AT4HD 2500HD have the newer style plug

Frankielozano214 · November 18, 2024

7 hours ago, Denali2024 said:

I have a 2024 GMC Sierra 1500 Denali.

Will I need any of the harnesses you mentioned in order to install the 2500 HD tail-lights on my Sierra 1500?

Yes that comment was for you forgot to tag u, my bad.

Frankielozano214 · November 18, 2024

I have a set available asking 1000$ for Denali like the ones on my truck 2024 Denali 2500HD

Denali2024 · November 18, 2024

2 hours ago, Frankielozano214 said:

Yes you will need the new 2024 taillight OEM harnesses (one goes to each light) plus the conversion harness. Only the 2024 Denali/AT4HD 2500HD have the newer style plug

Thanks for the info. Were you able to resolve the hyper flash and any other issues?

Frankielozano214 · November 18, 2024

2 hours ago, Denali2024 said:

Thanks for the info. Were you able to resolve the hyper flash and any other issues?

Not yet haven’t had time to drop my truck off at the dealership for programming but the guy that makes the conversion harness did tell me we needa do a “box delete programming” it’s 200$ over here in Dallas tx

Frankielozano214 · December 9, 2024

Swapped to the AT4HD taillights

Adrian B · January 11

On 11/18/2024 at 10:58 AM, Frankielozano214 said:

Not yet haven’t had time to drop my truck off at the dealership for programming but the guy that makes the conversion harness did tell me we needa do a “box delete programming” it’s 200$ over here in Dallas tx

Have you resolved the hyper flash issue? I’m interested in upgrading my tail lights also

Frankielozano214 · January 11

16 minutes ago, Adrian B said:

Have you resolved the hyper flash issue? I’m interested in upgrading my tail lights also

Na I was told by the harness maker I needa get a “box delete” program I did call dealership they said it’s 200$ but I’m not leaving my truck there for days, doesn’t bother me much so I’m holding out til I can get in dealer same day

DBrach · January 11

Following.

DBrach · January 11

8 hours ago, Frankielozano214 said:

Na I was told by the harness maker I needa get a “box delete” program I did call dealership they said it’s 200$ but I’m not leaving my truck there for days, doesn’t bother me much so I’m holding out til I can get in dealer same day

Couple of questions:

1. Was the harness maker @pgamboa?

2. Do the 2500 AT4 tail lights have the sequential turn signals?

Thanks in advance!

Frankielozano214 · January 11

35 minutes ago, DBrach said:

Couple of questions:

1. Was the harness maker @pgamboa?

2. Do the 2500 AT4 tail lights have the sequential turn signals?

Thanks in advance!

No he didn’t make this harness, but I do think he’s gonna be in the process of making a harness very soon. Definitely swapping my harness out with Pgamboa’s once he has them made. As for the sequential turning that’s programmed in the bcm so no we don’t get the fancy lighting

Edited January 11 by Frankielozano214

DBrach · January 11

Just now, Frankielozano214 said:

No he didn’t make this harness, but I do think he’s gonna be in the process of making a harness very soon. Definitely swapping my harness out with Pgamboa’s once he has it made

Thank you, and are the turn signals sequential?

Frankielozano214 · January 11

3 minutes ago, DBrach said:

Thank you, and are the turn signals sequential?

No but they are way brighter then the 2020 Denali led taillight

rear lights lite up

Brake light

DBrach · January 11

6 minutes ago, Frankielozano214 said:

No but they are way brighter then the 2020 Denali led taillight

rear lights lite up

Brake light

Thank you! I have seen some of them that are sequential and I have been trying to find those but to no luck. Let me know if you happen to know which ones those are if not I will update the forum once I find out.