Restore Your Vehicle’s Electrical System with a Hassle-Free Solution
Are you battling a storm of bizarre electrical problems in your 2012 GMC Terrain? Flickering lights, a horn that won’t quit, power windows with a mind of their own, or a security light that prevents your SUV from starting are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause widespread and frustrating issues. Dealerships often charge a fortune for a new module plus mandatory programming fees. We offer a smarter, more affordable path forward.
This listing is for a replacement BCM, part number 13580696, that comes ready for installation thanks to our professional cloning service. You simply send us your original BCM, and we transfer all the critical vehicle-specific data—like key information and security settings—to this replacement unit. We then ship it back to you, ready to be installed. This process bypasses the need for expensive dealership programming, making it a true plug-and-play fix that gets you back on the road quickly and confidently.
Case Study: A Tricky Diagnosis
I remember a 2012 Equinox (which uses the same BCM) that came into my shop with the strangest combination of symptoms. The owner reported the radio would randomly switch stations, the interior dome lights would flicker while driving, and occasionally, the vehicle wouldn’t recognize the key fob. A generic scan tool showed a dozen communication errors (U-codes). Instead of chasing each individual problem, my experience pointed straight to the central hub: the BCM. We confirmed the failure, performed a cloning service just like this one, and installed the replacement module. All 12 codes vanished, and every function returned to normal. It’s a prime example of how a single component can cause system-wide chaos.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM is the likely culprit. A failing module can often trigger communication-related Diagnostic Trouble Codes (DTCs) like U0140, U0155, or various B-codes.
- ✔️ Intermittent or non-functional power windows, locks, or mirrors.
- ✔️ Erratic behavior from interior or exterior lights (flickering, staying on, or not working at all).
- ✔️ The security or anti-theft system light is illuminated, preventing the engine from starting.
- ✔️ The horn sounding at random intervals.
- ✔️ Dash warning lights appearing and disappearing without a clear cause.
- ✔️ Problems with the keyless entry or remote start systems.
A Straightforward Guide to Installation
Once you receive your programmed module from us, the physical installation is simple. On a 2012 Terrain, the BCM is typically located on the left (driver’s) side of the dashboard.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: Access the BCM by removing the necessary trim panels on the driver’s side of the dash or kick panel area.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unbolt or unclip the module from its mounting bracket.
- Install the Replacement: Mount the new, programmed BCM in the same location and securely reconnect all the electrical connectors.
- Power Up: Reconnect the negative battery terminal.
- Verify Functionality: Start the vehicle and test all related functions: lights, windows, locks, horn, and wipers to ensure everything is operating correctly.
Important Post-Installation Notes
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 potential procedures:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function properly.
Disclaimer: Specific procedures can vary. We always recommend consulting a factory service manual or a qualified technician for guidance.
Guaranteed Vehicle Compatibility
This BCM is a direct replacement for part number 13580696 and is also compatible with part numbers 123589093, 13588446, 13584692, and 13583542. It is verified to fit the following vehicles:
- Buick LaCrosse: 2012, 2013 (LH kick panel)
- Buick Regal: 2012 (LH dash)
- Buick Verano: 2012 (below center of dash)
- Cadillac SRX: 2012 (LH dash, ID 13580696)
- 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 About Our BCM Service
Frequently Asked Questions
How does the cloning service work?
After you place your order, we will contact you with instructions for shipping your original BCM to our facility. Once we receive it, our technicians will extract the unique programming and security data and flash it onto the replacement module. We then ship the programmed module back to you, typically within 1-2 business days.
Do I need to send my keys with the BCM?
No, you do not need to send us your keys. All the necessary key and security information is stored within your original BCM, and that is what we transfer to the new unit.
Is this a guaranteed fix for my vehicle’s problems?
This service corrects issues directly caused by a faulty BCM. While the symptoms listed are strong indicators, we always recommend a proper diagnosis by a qualified mechanic to confirm the BCM is the root cause before ordering.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is not functioning in the vehicle, we can still recover the necessary data from the chip. If for some reason the data is completely unrecoverable, we will contact you to discuss options and will provide a full refund if we cannot proceed.
Do I have to return my old BCM after installation?
No. This service has no core charge. You are only required to send your original BCM to us for the initial data cloning. After that, you can keep it.