[Free Solution] Lost master key for 1999 GMC Sierra 2500 Extended - how to recover programming code?

732 views - Last reply: September 30, 2024
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Where's the key code stored in a 1999 GMC Sierra 2500 Extended for making new keys?

Hello! We've developed a VIN-based tool to help you get your key code for the 1999 GMC Sierra 2500 Extended. Check it out here: VIN Key Code Generator.

Replies (4)

Just checking in to say this helped with my 1999 GMC Sierra 2500 Extended. Thanks!

I’m not alone! My 1999 GMC Sierra 2500 Extended is doing the same thing.

Great info! Needed this for my old 1999 GMC Sierra 2500 Extended.

I tried this with my 1999 GMC Sierra 2500 Extended but still no luck. Any suggestions?

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