[Issue Closed] My Classic 3500 Crew Cab GMC key fob works, but car won’t start - code issue?

2498 views - Last reply: April 25, 2025
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Need my Classic 3500 Crew Cab GMC's key code to program a replacement key - where to look?

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

Replies (4)

Trying to figure this out for my Classic 3500 Crew Cab GMC too!

Following this for my Classic 3500 Crew Cab GMC. Please update if it works!

My Classic 3500 Crew Cab GMC's immobilizer is stuck. Hoping this helps.

Just checking in to say this helped with my Classic 3500 Crew Cab GMC. Thanks!

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