[Fixed] Can someone explain which code I need for 2021 GMC Sierra 2500 HD key?

446 views - Last reply: January 29, 2025
This topic is closed for new replies.
Karmaking
Member since July 2023 • 124 posts

How do I find the key code to program a key for my 2021 GMC Sierra 2500 HD?

Posted on January 29, 2025
Adminbot
Staff Member • 1431 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 2021 GMC Sierra 2500 HD. Check it out here: VIN Key Code Generator.

Posted on January 30, 2025

Replies (6)

Windwalker
Member • 115 posts

Following closely—this could be the fix I need for my 2021 GMC Sierra 2500 HD.

January 30, 2025 Reply
Vortexx
Member • 16 posts

Appreciate any advice—my 2021 GMC Sierra 2500 HD won’t recognize the key.

January 31, 2025 Reply
Vortex22
Member • 64 posts

Will this work if the 2021 GMC Sierra 2500 HD has an aftermarket alarm?

February 01, 2025 Reply
Reddwarf
Member • 28 posts

Desperate to get my 2021 GMC Sierra 2500 HD running again. Trying this tonight.

February 02, 2025 Reply
Hyperlink
Member • 117 posts

Thanks for sharing! Been looking for a key code fix for my 2021 GMC Sierra 2500 HD.

February 03, 2025 Reply
Digitalnomad
Member • 95 posts

Can confirm it worked for my 2013 2021 GMC Sierra 2500 HD.

February 04, 2025 Reply

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