Solve Frustrating Electrical Problems in Your GM Vehicle
Are you dealing with a cascade of bizarre electrical issues in your Buick, Chevy, or GMC? Flickering lights, malfunctioning power windows and locks, a security system that acts up, or even a car that refuses to start can all point to one culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can make your car feel unreliable and frustrating. Dealerships often charge a small fortune for a new module plus hours of labor for programming. We offer a smarter, more affordable solution.
This is a professionally prepared BCM that is made ready for your vehicle through our mail-in cloning service. You simply send us your original BCM, and we transfer all the critical vehicle-specific data—including VIN, mileage, and key information—to this replacement unit. The result? A module that arrives at your door ready for plug-and-play installation, eliminating the need for expensive dealer programming. This is the most efficient way to get a reliable fix for your 2012-2013 LaCrosse BCM and other compatible GM models.
From the Diagnostic Bay: The Case of the Haunted Equinox
A customer brought in a 2012 Equinox with a list of complaints that sounded like the vehicle was possessed. The radio would change stations on its own, the dome light would stay on, and occasionally the turn signals wouldn’t work. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a dozen communication error codes (U-codes) pointing to the BCM. Instead of a complex and costly rewiring job, we started with the most likely source. We used a mail-in cloning service just like this one. After a simple 20-minute swap of the module, every single one of the phantom electrical issues was gone. It’s a classic example of how a failing BCM can send confusing signals throughout the entire vehicle.
Is Your Vehicle Showing These Symptoms?
- ✔️ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔️ Headlights, taillights, or interior lights flickering, staying on, or not working at all.
- ✔️ The security system light is on, or the anti-theft system prevents the car from starting.
- ✔️ Instrument cluster gauges behaving erratically or going dark.
- ✔️ Communication error codes, such as U0140 (Lost Communication With Body Control Module).
- ✔️ Unresponsive key fob or push-to-start system.
Plug-and-Play Installation: Get Back on the Road Fast
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate Your BCM: The location varies by model. On a 2012-2013 LaCrosse, it’s typically behind the driver’s side kick panel. For other models, it may be under the dash or in a kick panel (see fitment list for clues).
- ✔ Remove the Original Module: Carefully disconnect all electrical connectors. They have locking tabs that need to be pressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the Replacement: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors firmly until they click into place.
- ✔ Final Steps: Reconnect the negative battery terminal. Start the vehicle to confirm that the primary functions are restored.
Important Post-Installation Information
While our programming handles the heavy lifting, 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 and is only required if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure proper brake light and traction control operation.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Will This Fit My Vehicle?
This BCM is a direct-fit replacement for several GM models and interchanges with part numbers 13580696, 123589093, 13588446, 13584692, and 13583542. Please verify your part number and check the list below.
- Buick LaCrosse: 2012 (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)
- Chevrolet Camaro: 2012-2013 (RH dash), 2014 (RH dash, Cpe)
- 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 mail-in programming service work?
After you place your order, we will contact you with simple instructions for shipping your original BCM to us. Once we receive it, we transfer the data to the replacement module and ship it back to you, typically within 1-2 business days.
Is this a guaranteed fix for my car’s electrical problems?
This part resolves issues directly caused by a faulty BCM. If your vehicle exhibits the common symptoms listed, a failing BCM is the most likely cause. Proper diagnosis is always recommended.
Do I need any special tools for installation?
No. Because we handle all the programming, installation is a simple plug-and-play process. You will only need basic hand tools to access and swap the module itself.
What if my original part number isn’t 13583542?
This module is compatible with several part numbers, including 13580696, 123589093, 13588446, and 13584692. As long as your original module carries one of these numbers, this part will work for your vehicle.
Is there a core charge?
No, there is no core charge for this item. We need your original module to perform the data cloning service, but you do not need to return the replacement part.