Restore Your Vehicle’s Brain Without the Dealership Headache
Are you dealing with baffling electrical issues in your GM vehicle? Flickering lights, malfunctioning power windows, a key fob that works intermittently, or a car that refuses to start for no apparent reason? These are classic signs of a failing Body Control Module (BCM), the central command center for your car’s electronics. A trip to the dealership often means high diagnostic fees, expensive parts, and even more costly programming charges. We offer a smarter, more affordable solution.
This is a comprehensive mail-in programming service for your BCM. You send us your original, faulty module, and we transfer all the critical vehicle-specific data—including VIN, mileage, and key information—to a fully tested, replacement BCM. The module you receive back is a true plug-and-play solution, completely synchronized to your vehicle. This process eliminates the need for any additional programming with expensive dealer tools, saving you significant time and money. It’s the most reliable way to get your car back to 100% functionality.
Case Study: The Ghost in the Spark EV
A customer brought in a 2015 Spark EV with a list of complaints that sounded like a haunting. The radio would turn on and off by itself, the dome light would flicker while driving, and occasionally, the car wouldn’t recognize the key fob. We checked the battery and grounds—all solid. Scans showed intermittent communication loss codes, specifically a U0140 (Lost Communication With Body Control Module). Instead of just replacing the BCM, which would require dealer programming, we performed a cloning service. By transferring the original data to a replacement unit, we preserved all the EV-specific settings. The customer had their car back the next day, all ghosts exorcised, without a trip to the dealer.
Common Signs of a Failing BCM
If your vehicle is experiencing any of the following, a faulty BCM is the likely culprit. In my shop, I’ve seen these modules cause some of the most confusing diagnostic chases. Confirming these symptoms can save you hours of guesswork.
- âś” Erratic or non-functional interior/exterior lights.
- âś” Power windows, locks, or wipers operating incorrectly or not at all.
- âś” Key fob recognition issues or security system faults.
- âś” Unexplained battery drain when the vehicle is off.
- âś” Dashboard warning lights that appear randomly (ABS, Airbag, Check Engine).
- âś” Diagnostic trouble codes (DTCs) related to communication loss, such as U0140.
A Straightforward Guide to Installation
Once you receive your programmed module, installation is simple. For the 2014-2016 Spark BCM, the module is located at the left lower A-pillar. For other models, refer to the fitment list for location.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait 10 minutes to ensure all systems are powered down.
- Locate the BCM: Find the original BCM. This may require removing a kick panel or trim piece.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your newly programmed BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- Power Up: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position (without starting the engine) for 30 seconds to allow the systems to initialize, then start your vehicle.
Important Post-Installation Notes
While our service makes this a plug-and-play repair, some vehicle systems may require a quick recalibration. This is normal. No core return is necessary; you can keep your original module.
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the airbag module with the new BCM.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
Disclaimer: Vehicle systems vary. Always have a factory service manual available for your specific model or consult with a qualified automotive technician.
Verified Vehicle Compatibility
This BCM programming service is compatible with units bearing part number 13591300 and the following interchangeable part numbers: 13580698, 13578458, 13589115, 13589637, 13590173, 13590851, 13592376, 13593775, 13593776, 13594564. It fits the following models:
- 2014-2016 Chevrolet Spark: Body Control (BCM); (left lower a-pillar), electric model (EV)
- 2014-2015 Buick LaCrosse: Body Control (BCM); (LH kick panel)
- 2016 Buick LaCrosse: Body Control (BCM); (LH kick panel), ID 13580698 or 13594564
- 2014-2015 Chevrolet Malibu: Body Control (BCM); (LH kick panel)
- 2016 Chevrolet Malibu: Body Control (BCM); VIN 1 (4th digit, Limited), (LH kick panel)
- 2014-2015 Chevrolet Volt: Body Control (BCM); (RH engine compartment)
- 2014-2016 Cadillac ELR: Body Control (BCM); (RH cowl)
- 2016 Cadillac ELR: Communication; (RH engine compartment)
- 2014-2017 Buick Regal: Body Control (BCM); (LH dash)
- 2014-2015 Chevrolet Camaro: Body Control (BCM); (RH dash)
- 2014-2016 Cadillac SRX: Body Control (BCM); (LH dash)
Frequently Asked Questions
How does the mail-in programming service work?
How does the mail-in programming service work?
After you purchase, we will contact you with instructions to ship your original BCM to us. Once we receive it, our technicians will clone the data to a replacement module and ship it back to you, typically within 1-2 business days. We provide tracking information for the return shipment.
Do I need to go to a dealer after installing this BCM?
No. Our cloning service makes the replacement BCM a plug-and-play part. It arrives pre-programmed with your car’s specific data, so no dealer visit for programming is required.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is failing, we can still extract the necessary data. If your module has severe water or fire damage, data recovery might not be possible. Please contact us with details about your module’s condition if you have concerns.
Is there a core charge for this part?
No, there is absolutely no core charge. We program a replacement module for you, and you can keep your original BCM.
Why does this BCM fit so many different GM models?
General Motors uses this hardware platform across a wide range of vehicles. The critical difference is the software and vehicle-specific programming inside. Our service ensures the module you receive is programmed to function perfectly for your specific make and model.