[Recommended Fix] Where can I locate the key code to program a 1999 GMC Sierra 2500 HD key?

4531 views - Last reply: August 27, 2024
This topic is closed for new replies.
Thunderbolt
Member since July 2023 • 11 posts

Trying to program a new key for my 1999 GMC Sierra 2500 HD - where's the key code?

Posted on August 27, 2024
Adminbot
Staff Member • 1356 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 1999 GMC Sierra 2500 HD. Check it out here: VIN Key Code Generator.

Posted on August 28, 2024

Replies (5)

Zombieslayer
Member • 147 posts

Been stuck with my 1999 GMC Sierra 2500 HD for weeks. This might be the fix.

August 28, 2024 Reply
Purplerain
Member • 88 posts

Why is finding a key code on a 1999 GMC Sierra 2500 HD this hard?!

August 29, 2024 Reply
Knightlight
Member • 120 posts

This thread might save my 1999 GMC Sierra 2500 HD. Thanks everyone!

August 30, 2024 Reply
Greenlantern
Member • 78 posts

Just checking in to say this helped with my 1999 GMC Sierra 2500 HD. Thanks!

August 31, 2024 Reply
Eve
Member • 37 posts

This trick worked for my buddy's 1999 GMC Sierra 2500 HD. Giving it a go myself.

September 01, 2024 Reply

Check the news !

Tuner Car Showdown
🚗 Local Meetup: Tuner Car Showdown
No trophies, just cool cars and cool people

📍 Where: Brewery District
📅 When: May 13 @ 12AM-8PM

Event features:
Judged Show | People's Choice Awards

🔧 Forum Members: Don't forget to tag your photos #OurForumName 👋

🔩 Hands-On Engine Tuning Workshop

👩‍🏭 Instructors:
• Suspension Guru David Klein
• Electronics Expert Priya Patel

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

📋 Skills Covered:
Multimeter use | Wiring diagrams | Short circuit tracing

🏎️ May 7, 2026 at 1:00 PM (4-hour)

💡 Limited to 15 participants - reserve your spot now!

Workshop: Hands-On Engine Tuning Workshop
Race Car Setup Seminar

🚀 Race Car Setup Seminar

⚙️ Instructor: NASCAR Crew Chief Lisa Thompson

📊 Workshop Includes:
• Boost control mapping exercises
• 6-hour comprehensive hands-on training
• Air/fuel ratios | Timing maps | Boost curves

🔩 Bonus: Entered into performance parts giveaway

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

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

Lost Keys
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.
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.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
Security Systems
An anti-theft system that prevents the engine from starting unless it detects the correct transponder chip in the key. The chip sends a unique code to the car's computer when you turn the ignition. No match = no start, even with a physically matching key.
Lost Keys
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.
Key Fact: Key fob batteries typically last 3-4 years with normal use

🔑 KEY SERVICES CLASSIFIEDS

Immobilizer System Reset
$95+
Posted: Apr 28, 2026
Fix "key not detected" errors and immobilizer issues. Dealer-level diagnostic equipment. Can often repair without replacing entire system. Free estimates.
Call: 966-368-2473
Smart Key Programming Special
$150
Posted: Apr 21, 2026
Push-to-start key replacement for Toyota, Honda, Nissan, Ford. Includes programming and testing. Limited time offer - normally $200+. Call for availability.
Call: 551-486-5081
Anti-Theft System Repair
$85+
Posted: Apr 26, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 656-638-0299
Fleet Key Programming
Call
Posted: Apr 26, 2026
Commercial key services for businesses with multiple vehicles. Bulk discounts available. We can handle all your company cars, trucks, and fleet vehicles.
Call: 913-506-0926
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 27, 2026

Mobile Key Programming Clinic

by Immobilizer Experts
Learn how to extract key codes from VIN numbers and decode vehicle security information
Seminar
May 19, 2026

Anti-Theft System Demonstration

by Fob Fixers
Hands-on experience with the newest transponder key cloning and programming equipment
Seminar
May 24, 2026

Mobile Key Programming Clinic

by Car Key Solutions
Step-by-step instruction for repairing common key fob issues including button and circuit problems
Seminar
May 8, 2026

Dealer-Level Programming Workshop

by VIN Decoder Pros
Hands-on experience with the newest transponder key cloning and programming equipment

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