[Solution] Need the factory key code to program a key for my 1987 GMC Sierra

4181 views - Last reply: February 01, 2025
This topic is closed for new replies.
Betamax
Member since April 2022 • 102 posts

Where's the key code located on a 1987 GMC Sierra for key programming?

Posted on February 01, 2025
Adminbot
Staff Member • 605 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 1987 GMC Sierra. Check it out here: VIN Key Code Generator.

Posted on February 02, 2025

Replies (5)

Quantumleap
Member • 76 posts

Will this work for older 1987 GMC Sierras? Mine's a 2009.

February 02, 2025 Reply
Greenlantern
Member • 60 posts

Following closely—this could be the fix I need for my 1987 GMC Sierra.

February 03, 2025 Reply
Kingkong
Member • 107 posts

Appreciate any advice—my 1987 GMC Sierra won’t recognize the key.

February 04, 2025 Reply
Orangecrush
Member • 94 posts

I tried this trick and it actually worked on my 1987 GMC Sierra!

February 05, 2025 Reply
Lightspeed
Member • 115 posts

I’ll try this and update how it goes with my 1987 GMC Sierra.

February 06, 2025 Reply

Check the news !

Rally Car Experience Day
🚗 Local Meetup: Rally Car Experience Day
From daily drivers to show queens

📍 Where: Waterfront Drive
📅 When: July 7 @ 12AM-7PM

Event features:
Tech Sessions | DIY Demonstrations

🔧 Forum Members: Forum members get preferred parking! 👋

🔩 Performance Modding 101

👩‍🏭 Instructors:
• Paint Specialist Sarah Chen
• Restoration Pro Alex Petrov

⚙️ Hands-On Activities:
• Paint correction demonstrations
• 6-hour intensive training
• Personal coaching

📋 Skills Covered:
Paint decontamination | Polishing | Protective coatings

🏎️ July 1, 2026 at 11:00 AM (6-hour)

💡 Tools and materials provided - just bring your enthusiasm!

Workshop: Performance Modding 101
Carburetor to EFI Conversion Clinic

🚀 Carburetor to EFI Conversion Clinic

⚙️ Instructor: Pro Drag Racer Jake 'The Snake' Reynolds

📊 Workshop Includes:
• Component selection guides
• 6-hour comprehensive hands-on training
• Traction control tuning | Launch control setup

🔩 Bonus: 1-month mentor access

🏎️ Next Session: June 20, 2026 at 12:00 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
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
Security Systems
Some systems reset by: 1) Disconnecting battery for 15+ minutes 2) Using original keys in specific sequences 3) Professional diagnostic reset. Consult your manual - procedures vary. Persistent issues may require dealer-level tools.
Cost & Options
1) Always have at least 2 working keys 2) Get spares made before losing originals 3) Consider key insurance/add-on coverage 4) Store key codes safely 5) Use protective cases for smart keys 6) Program new keys before old ones fail completely.
Key Tip: Replace key fob batteries every 1-2 years as preventative maintenance
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: Some locksmiths offer mobile key programming services
Security Systems
This means your car's immobilizer system can't read the key's transponder. Causes: dead key battery, damaged transponder chip, faulty car antenna ring around ignition, or system needs resetting. Try replacing the battery first.
Key Tip: Consider key insurance for expensive smart keys
Key Fact: Key fob batteries typically last 3-4 years with normal use

🔑 KEY SERVICES CLASSIFIEDS

Transponder Key Duplication
$65+
Posted: Jun 12, 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: 899-325-2069
Car Key Extraction Service
$45+
Posted: Jun 11, 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: 468-388-1980
Anti-Theft System Repair
$85+
Posted: Jun 12, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 699-928-6194
Vintage Car Key Restoration
$55+
Posted: Jun 7, 2026
Specializing in classic car keys (pre-1990). Can reproduce hard-to-find keys for antique vehicles. Museum-quality work for collector cars.
Call: 722-552-1455
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Workshop
Jun 27, 2026

Transponder Key Tech Day

by Mobile Key Tech
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Seminar
Jul 9, 2026

Car Security Certification Course

by Mobile Key Tech
Comprehensive guide to troubleshooting and resetting immobilizer systems in modern vehicles
Seminar
Jun 28, 2026

Mobile Key Programming Clinic

by Fob Fixers
Learn dealer-level programming techniques normally only available at franchise shops
Seminar
Jun 18, 2026

Immobilizer System Seminar

by Mobile Key Tech
Learn dealer-level programming techniques normally only available at franchise shops

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