End the Electrical Chaos in Your GM Vehicle
Are you dealing with baffling electrical issues in your Cadillac, Buick, or Chevy? One moment the power windows work, the next they don’t. Perhaps your dash lights are flickering like a disco ball, or worse, your vehicle refuses to start intermittently. These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen how a faulty BCM can turn a reliable vehicle into a source of constant frustration. It’s the central command for your car’s comfort and security features, and when it goes, chaos ensues.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We provide a professionally prepared BCM that is programmed by cloning the data from your original module. This means you get a component that is truly plug-and-play for your specific vehicle. You simply ship us your old BCM, we transfer all the essential vehicle-specific data to this replacement unit, and ship it right back to you, ready for installation. This process bypasses the exorbitant costs and scheduling headaches of a dealership visit for programming.
A Technician’s Notebook: The Ghost in the Machine
A 2012 Cadillac SRX came into my bay with a laundry list of complaints: the radio would randomly shut off, the interior lights would stay on, and the key fob worked only half the time. The owner had already replaced the battery and checked all the fuses. Diagnostics showed a flood of communication error codes (U-codes), all pointing back to one source. This is a tell-tale pattern I’ve seen hundreds of times. The BCM wasn’t completely dead, but its internal logic was failing, causing it to send corrupted signals across the vehicle’s network. By providing a cloned 2012 SRX BCM, we restored all functions perfectly without needing to re-code keys or perform complex setups, saving the customer over $700 compared to the dealership quote.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your BCM is the likely culprit:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security system acting up or preventing the car from starting.
- ✔ Inconsistent key fob or remote start operation.
- ✔ False warning messages on the instrument cluster (e.g., “Service Theft Deterrent System”).
- ✔ Diagnostic trouble codes (DTCs) such as U0140, U0155, or other communication-related faults.
Your Straightforward Guide to Installation
Installing your programmed BCM is a manageable task for a DIY enthusiast. The key is our cloning service, which handles the complex software side for you.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On the 2012 SRX, the BCM is typically found in the left-hand (driver’s side) of the dashboard. Other models may have it in the kick panel, under the center console, or even in the engine bay. Consult a service manual for your specific vehicle’s location.
- Remove the Old Module: Carefully unplug the electrical connectors. Most have a locking tab that needs to be depressed or lifted. Once disconnected, unbolt the module from its mounting bracket.
- Install the New BCM: Seat the replacement module in the bracket and secure it. Reconnect all electrical connectors firmly, ensuring they click into place.
- Reconnect Power: Reattach the negative battery terminal.
- Final Checks: Start the vehicle and test all body functions—windows, locks, lights, wipers, and radio—to confirm proper operation.
Important Post-Installation Information
While our cloning service makes this a near plug-and-play repair, some GM vehicles may require additional steps to sync all systems perfectly. Please be aware of the following possibilities:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn might be required to ensure your brake lights and traction control system function correctly.
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, part number 13580696, is a direct replacement for part numbers 123589093, 13588446, 13584692, and 13583542. It is confirmed to fit the following vehicles:
- Buick LaCrosse: 2012 (LH kick panel, ID 13580696), 2013 (LH kick panel)
- Buick Regal: 2012 (LH dash)
- Buick Verano: 2012 (below center of dash)
- Cadillac SRX: 2012 (LH dash, ID 13580696) – A perfect fit for your 2012 SRX BCM replacement.
- Chevrolet Camaro: 2012-2013 (RH dash), 2014 (RH dash, Coupe)
- 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
How does the cloning service work?
After you place your order, we will provide instructions for you to ship your original BCM to us. We then use specialized equipment to extract the unique vehicle data and transfer it to the replacement BCM. We then ship the programmed module back to you, ready for installation.
Do I need to send my keys?
No. Because we are cloning your original module’s data, all your existing keys will work exactly as they did before. This is a major advantage over dealership replacements.
What is the turnaround time?
We typically program and ship your replacement BCM within one business day of receiving your original module. You will receive tracking information as soon as it ships.
Is this a guaranteed fix for my car’s problems?
This BCM will fix problems directly caused by a faulty module. While the symptoms listed are very common for BCM failure, we always recommend a proper diagnosis by a qualified mechanic to rule out other issues like wiring or sensor faults.
What if my original BCM is completely dead or missing?
If your BCM is non-communicative or lost, we may not be able to retrieve the necessary data for cloning. Please contact us before purchasing to discuss potential options for your specific situation.
Is there a core charge?
No, there is no core charge for this service. You can keep your original module after you’ve sent it to us for the data transfer.