[It Worked!] My GMC K2500 Sierra 4WD flashes security light - what code is missing?

734 views - Last reply: May 17, 2025
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Looking for my GMC K2500 Sierra 4WD's key code to program a new key

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Replies (4)

Trying to figure this out for my GMC K2500 Sierra 4WD too!

Struggling with the same issue on my GMC K2500 Sierra 4WD, following this thread.

Looking for the same thing for my GMC K2500 Sierra 4WD, hope someone can help.

Trying to avoid reprogramming costs for my GMC K2500 Sierra 4WD. This is a lifesaver.

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