[Fixed] 2011 Chevrolet Avalanche 1500 LS only starts with master key - no code for new one

507 views - Last reply: March 22, 2025
This topic is closed for new replies.
Jazzcat
Member since November 2021 • 81 posts

Need the key code to program a new key for my 2011 Chevrolet Avalanche 1500 LS - help?

Posted on March 22, 2025
Adminbot
Staff Member • 533 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 2011 Chevrolet Avalanche 1500 LS. Check it out here: VIN Key Code Generator.

Posted on March 23, 2025

Replies (6)

Whiteknight
Member • 118 posts

My 2011 Chevrolet Avalanche 1500 LS is just sitting there waiting for a miracle like this.

March 23, 2025 Reply
Icedragon
Member • 37 posts

I tried this with my 2011 Chevrolet Avalanche 1500 LS but still no luck. Any suggestions?

March 24, 2025 Reply
Quickdraw
Member • 83 posts

I’m stuck in a parking lot with my 2011 Chevrolet Avalanche 1500 LS. Trying this now.

March 25, 2025 Reply
Yellowsub
Member • 46 posts

My 2011 Chevrolet Avalanche 1500 LS is basically useless until I get this code. Fingers crossed.

March 26, 2025 Reply
Xenomorph
Member • 52 posts

My 2011 Chevrolet Avalanche 1500 LS needs a new key but I need the code first. Help!

March 27, 2025 Reply
Iceberg
Member • 83 posts

Hope this method is better than the last one I tried on my 2011 Chevrolet Avalanche 1500 LS.

March 28, 2025 Reply

Check the news !

Supercar Sunday Gathering
🚗 Local Meetup: Supercar Sunday Gathering
Where car culture comes alive in your community

📍 Where: Waterfront Drive
📅 When: May 8 @ 12AM-6PM

Event features:
Photoshoot Area | Ride-Alongs

🔧 Forum Members: Forum staff will be there - come say hi! 👋

🔩 Track Prep & Safety Session

👩‍🏭 Instructors:
• Master Technician Carlos Rodriguez (20+ years experience)
• Paint Specialist Sarah Chen

⚙️ Hands-On Activities:
• Wiring harness fabrication
• 6-hour intensive training
• Personal coaching

📋 Skills Covered:
ECU mapping | Air/fuel ratios | Dyno tuning

🏎️ May 6, 2026 at 11:00 AM (6-hour)

💡 Early registrants get preferred work bay access!

Workshop: Track Prep & Safety Session
Dyno Tuning Intensive Course

🔋 Dyno Tuning Intensive Course

🧰 Instructor: Engine Builder Mike O'Connor (1000+ HP builds)

📱 Workshop Includes:
• Emission-legal power gains
• 6-hour comprehensive hands-on training
• Gear ratios | Differential tuning | Driveshaft angles

📉 Bonus: Live Q&A replay available

🔌 Next Session: May 2, 2026 at 2:00 PM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Warning: Cheap parts often cost more in the long run due to failures

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

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

Lost Keys
Yes, a skilled auto locksmith can extract the broken key and make a replacement. They can often do this without damaging the ignition cylinder. The new key will need programming if it has a transponder chip.
Key Tip: Consider key insurance for expensive smart keys
Key Programming
Most transponder keys and smart keys can be reprogrammed if they haven't been damaged. Basic mechanical-only keys (no chip) can't be reprogrammed - they must be physically cut to match your locks.
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.
Cost & Options
You can buy fobs online, but: 1) Must match your exact model/year 2) Many still require professional programming 3) Cheap knockoffs may not work reliably. Some eBay/Amazon sellers offer programming instructions for DIY-friendly models.
Key Tip: Always have at least two working keys to avoid expensive replacements
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 Fact: Key programming typically takes 15-30 minutes for professionals

🔑 KEY SERVICES CLASSIFIEDS

Smart Key Programming Special
$150
Posted: Apr 28, 2026
Push-to-start key replacement for Toyota, Honda, Nissan, Ford. Includes programming and testing. Limited time offer - normally $200+. Call for availability.
Call: 922-615-6702
Car Key Extraction Service
$45+
Posted: Apr 24, 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: 379-754-1688
Fleet Key Programming
Call
Posted: Apr 20, 2026
Commercial key services for businesses with multiple vehicles. Bulk discounts available. We can handle all your company cars, trucks, and fleet vehicles.
Call: 669-316-9006
Vintage Car Key Restoration
$55+
Posted: Apr 24, 2026
Specializing in classic car keys (pre-1990). Can reproduce hard-to-find keys for antique vehicles. Museum-quality work for collector cars.
Call: 693-813-3827
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Workshop
May 12, 2026

Lost Key Solution Roadshow

by Locksmith Pro
Solutions for when all keys are lost - from code pulling to immobilizer resets
Seminar
May 7, 2026

Smart Key Programming Class

by The Key Lab
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Workshop
May 3, 2026

Mobile Key Programming Clinic

by The Key Lab
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Seminar
May 2, 2026

Immobilizer System Seminar

by The Key Lab
Solutions for when all keys are lost - from code pulling to immobilizer resets

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