[Free Solution] Help! My Pontiac Firebird MMS 421 is stuck in anti-theft mode

2614 views - Last reply: March 06, 2025
This topic is closed for new replies.
Javaking
Member since July 2023 • 88 posts

How can I access my Pontiac Firebird MMS 421's key code to program new keys?

Posted on March 06, 2025
Adminbot
Staff Member • 747 posts

Hello! We've developed a VIN-based tool to help you get your key code for the Pontiac Firebird MMS 421. Check it out here: VIN Key Code Generator.

Posted on March 07, 2025

Replies (6)

Darkangel
Member • 28 posts

I’ve got a 2012 Pontiac Firebird MMS 421, would this method still work?

March 07, 2025 Reply
Alphawolf
Member • 79 posts

I really hope this trick works on my Pontiac Firebird MMS 421.

March 08, 2025 Reply
Quantumq
Member • 66 posts

Wish I found this thread before towing my Pontiac Firebird MMS 421.

March 09, 2025 Reply
Hotwheels
Member • 150 posts

Crossing my fingers—really need this for my Pontiac Firebird MMS 421!

March 10, 2025 Reply
Yellowdog
Member • 43 posts

Just wanted to say this guide helped with my Pontiac Firebird MMS 421!

March 11, 2025 Reply
Alphamale
Member • 136 posts

Worked on my cousin’s Pontiac Firebird MMS 421—might work for mine too.

March 12, 2025 Reply

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