[Free Solution] 2017 Buick LaCrosse Essence immobilizer module mismatch - how to fix?

2432 views - Last reply: January 02, 2025
This topic is closed for new replies.
Outlawjoe
Member since February 2022 • 138 posts

Need the key code to program a new key for my 2017 Buick LaCrosse Essence - help?

Posted on January 02, 2025
Adminbot
Staff Member • 1398 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 2017 Buick LaCrosse Essence. Check it out here: VIN Key Code Generator.

Posted on January 03, 2025

Replies (6)

Ultraman
Member • 118 posts

Was about to give up on my 2017 Buick LaCrosse Essence, but this gives me hope.

January 03, 2025 Reply
Dragonfly
Member • 42 posts

Same problem on my 2017 Buick LaCrosse Essence. Watching for any working solutions.

January 04, 2025 Reply
Haloeffect
Member • 145 posts

Crossing my fingers—really need this for my 2017 Buick LaCrosse Essence!

January 05, 2025 Reply
Quantumfizz
Member • 116 posts

Does this method work for the 2017 Buick LaCrosse Essence models from 2010 onward?

January 06, 2025 Reply
Xrayspecs
Member • 80 posts

Following closely—this could be the fix I need for my 2017 Buick LaCrosse Essence.

January 07, 2025 Reply
Zombieslayer
Member • 150 posts

Following along—same issue with my 2017 Buick LaCrosse Essence.

January 08, 2025 Reply

Check the news !

Supercar Sunday Gathering
🏎️ Local Meetup: Supercar Sunday Gathering
The best local cars all in one place

🗺️ Where: Industrial Park
⏰ When: May 15 @ 11AM-5PM

Event features:
Burnout Contest | DJ Music | Vendor Booths

🔩 Forum Members: Post in the thread to reserve your spot! 👍

🔩 Suspension Setup Clinic

👩‍🏭 Instructors:
• Electronics Expert Priya Patel
• Race Engineer Emily Torres

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

📋 Skills Covered:
Paint decontamination | Polishing | Protective coatings

🏎️ May 9, 2026 at 1:00 PM (4-hour)

💡 Take home custom workshop manual!

Workshop: Suspension Setup Clinic
Street to Strip Tuning Workshop

🏁 Street to Strip Tuning Workshop

🔧 Instructor: NASCAR Crew Chief Lisa Thompson

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

📈 Bonus: Free dyno pull for first 10 signups

⏱️ Next Session: May 6, 2026 at 11:00 AM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Insight: Suspension mods should match your intended use (street vs track)

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 Programming
Common reasons: wrong key type for your vehicle, anti-theft system needs reset, low car battery voltage during programming, or the key isn't properly synced. Some cars also have programming limits (only 2-4 keys can be registered).
Key Tip: Some locksmiths offer mobile key programming services
Key Programming
Some vehicles allow DIY key programming using specific sequences (like turning ignition on/off with original keys). However, most modern cars require specialized equipment only locksmiths or dealers have. Check your owner's manual for your specific model.
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 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.
Key Tip: Avoid exposing key fobs to water or extreme temperatures
Key Fact: Some insurance policies offer key replacement coverage

🔑 KEY SERVICES CLASSIFIEDS

Transponder Key Duplication
$65+
Posted: Apr 26, 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: 991-782-8313
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: 299-762-4135
Anti-Theft System Repair
$85+
Posted: Apr 27, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 842-750-4383
Fleet Key Programming
Call
Posted: Apr 19, 2026
Commercial key services for businesses with multiple vehicles. Bulk discounts available. We can handle all your company cars, trucks, and fleet vehicles.
Call: 961-617-8023
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 24, 2026

Key Fob Repair Training

by Immobilizer Experts
Hands-on training for programming transponder keys, smart keys, and fobs using professional tools
Workshop
May 5, 2026

Dealer-Level Programming Workshop

by Car Key Solutions
Hands-on experience with the newest transponder key cloning and programming equipment
Workshop
May 3, 2026

Smart Key Programming Class

by Fob Fixers
Solutions for when all keys are lost - from code pulling to immobilizer resets
Workshop
May 12, 2026

Car Security Certification Course

by Fob Fixers
Hands-on training for programming transponder keys, smart keys, and fobs using professional tools

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