[Completed] Just changed ECU on my 2015 GMC Sierra 3500 HD - need new transponder code?

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Trying to program a spare key - need the key code for my 2015 GMC Sierra 3500 HD

Hello! We've developed a VIN-based tool to help you get your key code for the 2015 GMC Sierra 3500 HD. Check it out here: VIN Key Code Generator.

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Fingers crossed this works for my 2015 GMC Sierra 3500 HD too.

Following along—same issue with my 2015 GMC Sierra 3500 HD.

Thanks for sharing! Been looking for a key code fix for my 2015 GMC Sierra 3500 HD.

This just might solve my 2015 GMC Sierra 3500 HD's ignition issue.

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