[Closed] Emergency! Must find key code for 2006 Hummer H3

934 views - Last reply: August 20, 2024
This topic is closed for new replies.
Highvoltage
Member since December 2022 • 137 posts

Need the factory key code to program a key for my 2006 Hummer H3

Posted on August 20, 2024
Adminbot
Staff Member • 1289 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 2006 Hummer H3. Check it out here: VIN Key Code Generator.

Posted on August 21, 2024

Replies (4)

Electric
Member • 7 posts

Worked on my cousin’s 2006 Hummer H3—might work for mine too.

August 21, 2024 Reply
Goldenret
Member • 101 posts

Hope this method is better than the last one I tried on my 2006 Hummer H3.

August 22, 2024 Reply
Ironwill
Member • 54 posts

Trying to reprogram a new key for my 2006 Hummer H3—need the code first.

August 23, 2024 Reply
Cosmokid
Member • 139 posts

Hope this method is better than the last one I tried on my 2006 Hummer H3.

August 24, 2024 Reply

Check the news !

Classic & Vintage Car Rally
🚗 Local Meetup: Classic & Vintage Car Rally
A gathering for true gearheads and petrolheads

📍 Where: Local Race Track
📅 When: May 26 @ 11AM-7PM

Event features:
Cruise Night | Raffle Prizes | Food Trucks

🔧 Forum Members: Who's going? Sound off in the comments! 👋

🔩 Off-Road Vehicle Build Day

👩‍🏭 Instructors:
• Custom Fabricator Mike 'Wrench' O'Connor
• Electronics Expert Priya Patel

⚙️ Hands-On Activities:
• Ceramic coating application
• 6-hour intensive training
• Personal coaching

📋 Skills Covered:
Paint decontamination | Polishing | Protective coatings

🏎️ May 6, 2026 at 11:00 AM (6-hour)

💡 Special discounts on tools for participants!

Workshop: Off-Road Vehicle Build Day
Dyno Tuning Intensive Course

🚀 Dyno Tuning Intensive Course

⚙️ Instructor: Turbocharging Specialist Marco Rodriguez

📊 Workshop Includes:
• Emission-legal power gains
• 6-hour comprehensive hands-on training
• Cam profiles | Compression ratios | Octane requirements

🔩 Bonus: Live Q&A replay available

🏎️ Next Session: May 2, 2026 at 9:00 AM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Remember: More power means you'll need better brakes and tires

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

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

Key Programming
Professional key programming requires: diagnostic tools to access the immobilizer system, key code software, transponder programmers, and often proprietary manufacturer equipment. Some locksmiths and all dealers have these tools.
Key Tip: Newer cars often require dealer programming for first key replacement
Key Fob Issues
Common causes: dead battery (most common), water damage, internal circuit damage, or the fob lost synchronization with your car. Try replacing the battery first. If that doesn't help, the fob may need reprogramming or replacement.
Key Fob Issues
Many cars have a resync procedure: 1) Press lock/unlock buttons while near the car 2) Insert key and turn ignition on/off in a specific pattern 3) Use a sequence of button presses. Check your manual for exact steps - procedures vary widely by manufacturer.
Lost Keys
1) Contact a locksmith who specializes in automotive keys or your dealership 2) Provide proof of ownership (registration, title, ID) 3) They'll either cut new keys by code or reprogram your car's system 4) This is expensive ($200-$800) as the immobilizer may need resetting.
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: Newer cars often require dealer programming for first key replacement
Key Fact: Smart keys use radio frequencies between 125 kHz and 2.4 GHz

🔑 KEY SERVICES CLASSIFIEDS

Key Fob Repair & Battery Replacement
$25+
Posted: Apr 20, 2026
Fob not working? We fix broken buttons, replace batteries, and resync to your vehicle. Most repairs done while you wait. Water damage specialists available.
Call: 693-915-0361
Transponder Key Duplication
$65+
Posted: Apr 29, 2026
Get spare keys made before you lose yours! Cuts and programs most transponder keys on the spot. Cheaper than dealerships. 15+ years experience.
Call: 460-358-2216
Car Key Extraction Service
$45+
Posted: Apr 23, 2026
Broken key stuck in ignition or door? We can remove it without damage and make new keys same day. Emergency service available 24/7 for lockouts.
Call: 450-495-3049
Dealer Alternative Key Service
40% Less
Posted: Apr 22, 2026
Same quality as dealership without the markup. We have the same programming tools but charge significantly less. All major European, Asian, and domestic brands.
Call: 809-399-8959
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 21, 2026

Car Security Certification Course

by The Key Lab
Become certified in vehicle security systems with our intensive 2-day course
Seminar
May 13, 2026

VIN Decoding Workshop

by The Key Lab
Learn dealer-level programming techniques normally only available at franchise shops
Workshop
May 14, 2026

Lost Key Solution Roadshow

by Immobilizer Experts
Hands-on experience with the newest transponder key cloning and programming equipment
Workshop
May 16, 2026

Smart Key Programming Class

by VIN Decoder Pros
Comprehensive guide to troubleshooting and resetting immobilizer systems in modern vehicles

Need immediate service? Call our 24/7 hotline: 1-800-KEY-HELP

Want to list your key service? Join our provider network

Last posts on the forum