Restore Your Vehicle’s Electrical System with a Hassle-Free Solution
Are you dealing with bizarre electrical gremlins in your 2012 GMC Terrain or another compatible GM vehicle? Flickering lights, malfunctioning power windows, a radio that has a mind of its own, or even a no-start condition can often be traced back to a single culprit: a failing Body Control Module (BCM). As an experienced technician, I’ve seen firsthand how a faulty BCM can turn a reliable vehicle into a source of daily frustration. It’s the central hub for all your car’s comfort and convenience features, and when it goes, things get weird—fast.
Forget expensive dealership visits, towing fees, and the headache of programming a new module from scratch. This is a complete, ready-to-install solution. We take the vital data from your original BCM and professionally clone it to this replacement unit. The result? A module that is plug-and-play, recognizing your vehicle’s specific configuration and existing keys right out of the box. This service is designed for both seasoned mechanics and DIY warriors who want a reliable fix without the dealership price tag.
From the Diagnostic Bay: The Case of the Confused Crossover
A customer brought in a 2012 Equinox (which uses the same BCM) with a laundry list of complaints: the turn signals worked intermittently, the dome light wouldn’t turn off, and the remote key fob was dead. They had already replaced the battery and checked fuses with no luck. A quick scan showed multiple U-codes (communication loss) pointing to the BCM. Instead of a multi-day, $1000+ repair at the dealer, we used our cloning service. By transferring the data from his old, failing BCM to our replacement unit, the vehicle was back to 100% functionality in under an hour of shop time. This is the exact, efficient service we offer you.
Common Symptoms of a Failing GM BCM
If your vehicle is exhibiting any of these signs, a failing BCM is a likely cause. A proper diagnosis is always recommended, but these are classic indicators I’ve seen hundreds of times:
- ✔ Erratic or non-functional interior/exterior lights
- ✔ Power windows, door locks, or mirrors not working correctly
- ✔ Instrument cluster gauges behaving oddly or not working
- ✔ Vehicle security system issues or false alarms
- ✔ Remote keyless entry failure
- ✔ Intermittent no-start or stalling conditions
- ✔ Diagnostic trouble codes (DTCs) related to communication loss (e.g., U0140, U0155)
Your Straightforward BCM Installation Guide
Installing your programmed 2012 Terrain BCM is a manageable job for someone with basic mechanical skills. The location varies slightly by model, but the process is similar. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- Locate the BCM: On the 2012 Terrain and Equinox, the BCM is typically found on the left (driver’s) side of the dashboard, often behind the lower dash panel or near the kick panel. For other models, consult your service manual for the exact location.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Use a non-marring pry tool to avoid damage.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and test all body functions—lights, windows, locks, radio, etc.—to confirm the repair.
Important Post-Installation Information
While our cloning service makes this a plug-and-play process, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional scan tool to sync the modules and is not something that can be cleared by disconnecting the battery.
- 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: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician for procedures specific to your vehicle.
Verified Vehicle Compatibility List
This BCM, part number 13584692, is a direct replacement for several part numbers and fits a range of GM vehicles. Please verify your part number and model from the list below.
- Part Numbers: 13580696, 123589093, 13588446, 13584692, 13583542
- Buick LaCrosse: 2012-2013 (Body Control Module; LH kick panel)
- Buick Regal: 2012 (Body Control Module; LH dash)
- Buick Verano: 2012 (Body Control Module; below center of dash)
- Cadillac SRX: 2012 (Body Control Module; LH dash, ID 13580696)
- Chevrolet Camaro: 2012-2014 (Body Control Module; RH dash)
- Chevrolet Equinox: 2012 (Body Control Module; LH side dash)
- Chevrolet Spark: 2013 (Body Control Module; left lower a-pillar)
- Chevrolet Volt: 2012 (Body Control Module; RH engine compartment)
- GMC Terrain: 2012 (Body Control Module; LH side dash)
Frequently Asked Questions
How does the cloning service work?
After you place your order, we will provide you with instructions to ship your original BCM to us. We then extract the unique data and transfer it to the replacement module. This ensures it works with your existing keys and vehicle options, saving you from a costly trip to the dealer for programming.
Is this a plug-and-play installation?
Yes, for over 95% of installations. Because we clone your original data, the vehicle will recognize the module as its own. In rare cases, a secondary procedure like an airbag sync may be needed, which requires a professional scan tool.
Do I need to send my original BCM? What about a core charge?
Yes, you must send us your original BCM for the data cloning process. There is no core charge, and you can keep your original module after the service is complete.
Will this fix my specific problem?
This part resolves issues directly caused by a faulty BCM, such as the common electrical symptoms listed above. It will not fix problems related to other failed components (e.g., a bad window motor or a faulty switch). A proper diagnosis is key to a successful repair.
How long does the service take?
We perform the programming service the same day we receive your original module. We then ship the replacement BCM back to you, and you will receive tracking information at that time. Total turnaround time depends on shipping speed.