Tired of Your Terrain’s Electrical Gremlins? Get a Permanent Fix.
As a technician with over two decades of experience, I’ve seen it all. The frantic calls about windows that won’t go up, interior lights that flicker like a horror movie, or a security light that keeps your 2012 GMC Terrain from starting. These aren’t random glitches; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s comfort and convenience features, and when it fails, it can make your daily drive incredibly frustrating. Dealerships will quote you a fortune for a new module and the mandatory programming. We offer a smarter, more affordable solution.
This is a fully tested, replacement BCM compatible with part number 13584692. The best part? We handle all the programming for you. Through our simple mail-in cloning service, we transfer the exact data from your original BCM to this replacement unit. When you receive it back, it’s a true plug-and-play installation. You get to skip the expensive trip to the dealer, avoid programming headaches, and restore your vehicle’s functionality with confidence. It’s the go-to solution for both savvy DIYers and professional shops looking for a reliable fix.
A Technician’s Notebook: The Case of the Confused Equinox
A customer brought in a 2012 Equinox (which uses the same BCM as your Terrain) with a bizarre list of complaints. The radio would randomly shut off, the driver’s side power window worked intermittently, and the remote key fob was unresponsive. They had already replaced the battery and checked fuses with no luck. A quick scan showed a slew of communication codes (U-codes) pointing to the BCM. Instead of a costly new unit, we used this exact cloning service. After a simple swap, every single electrical issue was resolved. It’s a testament to how a single component can cause widespread, confusing problems, and how the right solution can be simple and effective.
Is Your Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or interior/exterior lights.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Wipers or radio turn on and off by themselves.
- ✔ Remote keyless entry (fob) stops working.
- ✔ Multiple communication error codes (like U0140) stored in the system.
- ✔ Inconsistent instrument panel gauge operation.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ 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 trim panel.
- ✔ Remove Connectors: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be pressed to release. Do not force them.
- ✔ Swap the Module: Unbolt or unclip the original BCM from its mounting bracket and remove it. Install your new, pre-programmed module in its place.
- ✔ Reconnect Everything: Plug all electrical connectors firmly into the new BCM until they click into place. Reconnect the negative battery terminal.
- ✔ Test Functionality: Start the vehicle and test all the features controlled by the BCM—lights, locks, windows, wipers, etc.—to confirm the repair.
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 potential procedures:
- 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 airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
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 is a direct replacement for part numbers 13580696, 123589093, 13588446, 13584692, and 13583542 and fits the following models:
- 2012 Buick LaCrosse: (LH kick panel), ID 13580696
- 2013 Buick LaCrosse: (LH kick panel)
- 2012 Buick Regal: (LH dash)
- 2012 Buick Verano: (below center of dash)
- 2012-2013 Chevrolet Camaro: (RH dash)
- 2014 Chevrolet Camaro: (RH dash), Coupe
- 2012 Chevrolet Equinox: (LH side dash), body control
- 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), body control
Frequently Asked Questions
How does the cloning service work?
After you place your order, we will contact you with instructions to ship your original BCM to us. We then transfer its unique programming and security data to the replacement module. This ensures it works with your specific vehicle’s keys and options without any additional programming.
Do I need to send my keys?
No, you do not need to send us your keys. Because we clone the data from your original module, the replacement BCM will recognize your existing keys perfectly.
Is there a core charge?
Absolutely not. You are not required to return your old module to us after the cloning service is complete. You can keep it.
How long does the process take?
We typically program and ship your replacement BCM within one business day of receiving your original module. We’ll send you tracking information as soon as it’s on its way back to you.
What if my original BCM is completely dead or unreadable?
In most cases, even with significant internal failure, we can still extract the necessary data. If for some reason your module is unreadable, we will contact you to discuss options or provide a full refund.