[Method] My 2003 GMC Sierra 3500 Crew only works with valet key - programming issue?

4317 views - Last reply: January 16, 2025
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Trying to program a spare key - need the key code for my 2003 GMC Sierra 3500 Crew

Hello! We've developed a VIN-based tool to help you get your key code for the 2003 GMC Sierra 3500 Crew. Check it out here: VIN Key Code Generator.

Replies (4)

I can’t believe I found this. Been stuck with my 2003 GMC Sierra 3500 Crew too.

Same issue here with my 2003 GMC Sierra 3500 Crew, let me know if it works.

Appreciate the tips—trying to unlock my 2003 GMC Sierra 3500 Crew key code too.

I have the same 2003 GMC Sierra 3500 Crew and I'm also trying to find the key code.

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