Restore Your Vehicle’s Electrical System with a Hassle-Free Solution
Are you battling frustrating electrical gremlins in your 2012 GMC Terrain? Flickering lights, malfunctioning power windows, a dead instrument cluster, or a car that refuses to start are all classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of confusing and disruptive problems. Dealerships often quote astronomical prices for a new module plus mandatory programming fees. We offer a smarter, more affordable path forward.
This is a comprehensive programming service for a replacement BCM compatible with part number 123589093. The process is simple: you purchase this service, and we’ll provide instructions for shipping your original BCM to our facility. Our expert technicians will then clone all the critical data—including VIN, mileage, and key information—from your module to a fully tested replacement unit. This makes the replacement a direct-fit, plug-and-play solution, eliminating the need for expensive dealership programming. We ship the ready-to-install BCM back to you, getting you back on the road quickly and confidently.
Case Study: A Tricky Diagnosis
A customer brought in a 2012 Equinox (which shares the same platform as the Terrain) with a bizarre set of symptoms. The radio would turn on by itself, the driver’s side power window was dead, and the remote key fob worked intermittently. They had already replaced the battery and checked all the fuses. A scan showed a handful of U-codes (U0140, U0155), indicating a loss of communication with the BCM. Instead of just replacing it, we inspected the original module and found minor corrosion on one of the connector pins from a suspected windshield leak—a common issue on these platforms. By providing a cloned 2012 Terrain BCM, we not only fixed the immediate electrical problems but also saved the customer from needing new keys programmed, a significant cost and time savings.
Common Signs of a Failing BCM
If your vehicle is showing these symptoms, a faulty BCM is the likely culprit. A failing module can often trigger communication-related Diagnostic Trouble Codes (DTCs).
- ✔ Erratic or non-functional interior/exterior lights.
- ✔ Power windows, locks, or mirrors not working correctly.
- ✔ Malfunctioning security system or anti-theft light staying on.
- ✔ Instrument panel gauges behaving erratically or going dark.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire.
- ✔ Communication error codes, such as U0140, U0151, or other U-codes.
Your Straightforward Installation Guide
Installing your cloned BCM is designed to be a simple process. Since we’ve handled the programming, you won’t need any special tools for the initial setup.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: On a 2012 GMC Terrain, the BCM is typically located on the left (driver’s) side of the dash, often behind the lower dash panel near the steering column.
- Remove the Original BCM: Carefully disconnect the electrical connectors. Press the release tabs firmly and pull the connectors straight out. Then, unbolt or unclip the module from its mounting bracket.
- Install the Replacement BCM: Mount the new module in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Post-Install Checks: Start the vehicle and verify that functions like lights, windows, and locks are working. Note the post-installation procedures below, as some relearns may be necessary.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, some vehicle systems may require recalibration after the BCM is replaced. This is a normal part of the process.
- Airbag System Sync: If the airbag warning light is on after installation, a simple “Setup SDM Primary Key in BCM” procedure is needed. This syncs the airbag system with the new BCM and requires a professional-grade scan tool.
- Brake Pedal Position Relearn: To ensure your brake lights and traction control system function correctly, a brake pedal position sensor recalibration might be necessary. This can also be performed with a capable diagnostic tool.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM programming service is guaranteed to work for the following vehicles and part numbers. The replacement module we provide (Part No. 13580696) is a direct interchange for the numbers listed below.
Compatible Part Numbers: 13580696, 123589093, 13588446, 13584692, 13583542
Compatible Models:
- 2012 Buick Regal (LH dash)
- 2012-2013 Buick LaCrosse (LH kick panel, ID 13580696)
- 2012 Buick Verano (Below center of dash)
- 2012-2014 Chevrolet Camaro (RH dash)
- 2012 Chevrolet Equinox (LH side dash)
- 2013 Chevrolet Spark (Left lower a-pillar)
- 2012 Chevrolet Volt (RH engine compartment)
- 2012 Cadillac SRX (LH dash, ID 13580696)
- 2012 GMC Terrain (LH side dash)
Frequently Asked Questions
How does the cloning service work after I order?
After you place your order, we will contact you with detailed instructions and a shipping address. You will securely pack and ship your original BCM to us. Once we receive it, we transfer the data to the replacement module and ship it back to you, usually within 1-2 business days.
Do I need to send my keys with the BCM?
No. Because we are cloning the data directly from your original module, all of your existing key information is transferred over. Your current keys will work immediately upon installation.
Is this a guaranteed fix for my vehicle’s problems?
This service corrects issues caused by a faulty BCM. While the symptoms listed are strong indicators, proper vehicle diagnosis is essential. We guarantee our programming service and the functionality of the replacement module we send you.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is not fully functional in the vehicle, we can still extract the necessary data. If for some reason the data is not recoverable, we will contact you to discuss options and provide a full refund if we cannot proceed.
Do I need to pay a core charge?
No, there is no core charge for this service. You can keep your original module after you receive the programmed replacement from us.