[It Worked!] Key code not working on my Chevrolet S 10 Blazer

824 views - Last reply: March 18, 2025
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Need my Chevrolet S 10 Blazer's key code to program a spare key - where to find?

Hello! We've developed a VIN-based tool to help you get your key code for the Chevrolet S 10 Blazer. Check it out here: VIN Key Code Generator.

Replies (6)

Thanks! This could save me a trip to the dealership for my Chevrolet S 10 Blazer.

I need this so bad for my Chevrolet S 10 Blazer. Subscribed!

If this works for my Chevrolet S 10 Blazer, I owe you big time.

Really hoping this unlocks my Chevrolet S 10 Blazer's mystery code.

My Chevrolet S 10 Blazer refuses to start. Could be the key code—trying this fix.

I’ll try this and update how it goes with my Chevrolet S 10 Blazer.

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Common questions about key programming, fob issues, and replacement options

Key Programming
Programming syncs the key's transponder chip with your car's immobilizer system. The process varies by manufacturer but generally involves: 1) authenticating with the car's computer 2) erasing old keys if needed 3) programming new key codes 4) testing functionality.
Key Tip: Some locksmiths offer mobile key programming services
Lost Keys
Dealerships can often cut keys using your VIN, but will require proof of ownership. This only works for original factory keys - aftermarket or previously replaced locks won't match. The key will still need programming to start the car if it has a transponder.
Key Tip: Always have at least two working keys to avoid expensive replacements
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Costs vary widely: Basic keys: $50-$150, Transponder keys: $150-$300, Smart keys/fobs: $200-$800, Dealership replacements typically cost 20-50% more than locksmiths. Emergency/lockout service adds $50-$150.
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Key Fob Issues
1) Find the seam and pry open the fob (some have tiny screws) 2) Note battery orientation 3) Remove old battery (CR2032 is most common) 4) Insert new battery 5) Reassemble. Test all buttons - if issues remain, the fob may need reprogramming.
Key Fob Issues
1) Find the seam and pry open the fob (some have tiny screws) 2) Note battery orientation 3) Remove old battery (CR2032 is most common) 4) Insert new battery 5) Reassemble. Test all buttons - if issues remain, the fob may need reprogramming.
Key Tip: Some locksmiths offer mobile key programming services
Key Fact: Smart keys use radio frequencies between 125 kHz and 2.4 GHz

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