[Resolved] Programmed new key but Pontiac Bonneville X400 still won’t start - code?

3705 views - Last reply: February 13, 2025
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Need my Pontiac Bonneville X400's key code to program a new transponder key

Hello! We've developed a VIN-based tool to help you get your key code for the Pontiac Bonneville X400. Check it out here: VIN Key Code Generator.

Replies (4)

Just what I needed! My Pontiac Bonneville X400 has been acting up lately.

Has anyone gotten this method to work on a Pontiac Bonneville X400 before?

My Pontiac Bonneville X400 won’t budge without the code. Hoping this helps.

I have the same Pontiac Bonneville X400 and I'm also trying to find the key code.

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