Restore Your Vehicle’s Brain without the Dealer Hassle
Is your 2012 GMC Terrain or other GM vehicle acting possessed? Flickering lights, a horn that won’t quit, power windows with a mind of their own, or a frustrating no-start condition can often be traced back to one component: a failing Body Control Module (BCM). As the central nervous system for your vehicle’s electronics, when the BCM goes bad, it creates chaos. Dealerships will quote you a hefty price for a new module plus hundreds more for programming. We offer a smarter, more affordable solution.
This is a fully tested, replacement BCM compatible with part number 13584692. The real magic is in our unique programming service. You simply ship us your original BCM, and we transfer all of its vital data—including VIN, mileage, and security information—to this replacement unit. The result? You receive a true plug-and-play module. No expensive trips to the dealer, no complicated programming tools needed. Just install it and restore full functionality to your vehicle. This is the most reliable way to get a working 2012 Terrain BCM without the headaches.
Case Study: A Tricky Diagnosis
I remember a 2012 Chevy Equinox (which shares its platform with the Terrain) that came into my shop with a laundry list of bizarre electrical complaints. The owner was frustrated because the issues were intermittent. Sometimes the radio would shut off, other times the power locks wouldn’t work, and occasionally it wouldn’t start. There were no consistent check engine lights, just a few random communication codes (U-codes) stored in memory. After checking the main power and ground connections, we focused on the BCM. By monitoring the data stream, we could see the module dropping offline intermittently. Instead of a costly new BCM and programming, we used a cloned module like this one. The customer had their vehicle back the next day, fully functional, and for a fraction of the dealership’s quote.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, locks, and interior/exterior lights.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ The horn blaring or wipers activating unexpectedly.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Communication error codes, such as U0140, stored in the vehicle’s computer system.
- ✔ Problems with the keyless entry or remote start systems.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On a 2012 Terrain or Equinox, the BCM is typically located on the left (driver’s) side of the dash, often behind a kick panel or the lower dash trim. Consult a service manual for the exact location on your specific model.
- ✔ Remove Connectors: Carefully unplug the electrical connectors from the old BCM. They have release tabs that need to be pressed. Do not force them.
- ✔ Unbolt the Module: Remove the bolts or nuts securing the BCM to its mounting bracket and remove it from the vehicle.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location and secure it with the original hardware.
- ✔ Reconnect Everything: Plug all electrical connectors back into the new module until they click securely in place. Reconnect the negative battery terminal.
- ✔ Perform Final Checks: Start the vehicle and test all body functions—lights, windows, locks, radio, etc. Note the post-installation procedures below, as some recalibrations may be necessary.
Important Post-Installation Information
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following:
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed. This requires a professional-grade scan tool to sync the airbag system with the BCM and turn off the light.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure your brake lights and traction control system function correctly.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Verified Vehicle Compatibility
This BCM and cloning service is compatible with units matching part numbers 13580696, 123589093, 13588446, 13584692, and 13583542. It fits the following models:
- Buick LaCrosse: 2012-2013 (LH kick panel)
- Buick Regal: 2012 (LH dash)
- Buick Verano: 2012 (below center of dash)
- Cadillac SRX: 2012 (LH dash)
- Chevrolet Camaro: 2012-2014 (RH dash)
- Chevrolet Equinox: 2012 (LH side dash)
- Chevrolet Spark: 2013 (left lower a-pillar)
- Chevrolet Volt: 2012 (RH engine compartment)
- GMC Terrain: 2012 (LH side dash)
Frequently Asked Questions
Frequently Asked Questions
How does this programming service work?
After you place your order, we’ll contact you with instructions to ship your original BCM to us. Once we receive it, we copy its programming to the replacement module and ship it back to you, ready for installation. This ensures 100% compatibility.
Why is cloning better than just buying a used BCM?
A standard used BCM will have the wrong VIN and security data, preventing your car from starting. Our cloning service transfers your vehicle’s specific data, making the replacement module a perfect match and avoiding expensive dealer programming.
Will this fix my specific problem?
This module corrects issues caused by a faulty BCM. If you are experiencing multiple, unrelated electrical problems like those listed in the symptoms section, a failing BCM is the most likely cause. Proper diagnosis is always recommended.
Is this difficult to install myself?
For someone with basic DIY skills, the physical swap is straightforward. The main challenge is accessing the module’s location. Our cloning service eliminates the most difficult part: the electronic programming.
What if the airbag light comes on after I install it?
This is a known possibility. The airbag module (SDM) may need to be electronically re-synced with the new BCM using a professional scan tool. This is a simple procedure for any competent repair shop.
Do I have to send my old part back? Is there a core charge?
You must send your original BCM to us for the cloning service, but there is no additional core charge. You can keep your old module after the service is complete.