Restore Full Functionality to Your Vehicle’s Electronics
Are you battling bizarre electrical issues in your GM vehicle? Flickering lights, unresponsive power windows, or a security system that has a mind of its own? These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). As the central command for your car’s comfort and convenience features, a faulty BCM can make driving a frustrating experience. In my 20+ years in the shop, I’ve seen how a single failing module can cause a cascade of seemingly unrelated problems, leaving owners and even some technicians chasing ghosts. This is the definitive, straightforward solution.
We offer a hassle-free programming service for this BCM, part number 13580698. Instead of paying for expensive dealership diagnostics and programming, you simply send us your original module. We expertly transfer all the critical vehicle-specific data—including VIN, mileage, and key programming—to this replacement unit. The result? A fully functional, plug-and-play module arrives at your door, ready for installation. It’s the most efficient way to solve the problem without disrupting your vehicle’s complex electronic ecosystem.
Case Study: A Tricky Diagnosis
A customer brought in a 2015 Chevy Spark EV with a very peculiar problem. The interior dome light would stay on intermittently, the radio would sometimes not power on, and occasionally the car wouldn’t recognize the key fob. They had already replaced the battery and checked all the fuses. After connecting my scan tool, I found several ‘Loss of Communication’ codes (U-codes) pointing to the BCM. Instead of a costly new module and hours of programming at the dealer, we used this exact cloning service. Once the programmed module was installed, all the electrical gremlins vanished. It’s a perfect example of how a targeted, expert solution saves time and money.
Common Signs of a Failing BCM
If your vehicle is exhibiting these symptoms, a faulty BCM is the likely culprit. A failing module can often set communication codes like U0140, U0155, or other related DTCs.
- ✔ Erratic or non-functional power windows and door locks.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security system or alarm randomly activating.
- ✔ The horn honking unexpectedly.
- ✔ Wipers behaving erratically or not parking correctly.
- ✔ Key fobs not being recognized by the vehicle.
- ✔ Dashboard warning lights appearing for no clear reason.
Your Straightforward BCM Installation Guide
Installing your newly programmed 2014-2016 Spark BCM is a manageable task for a confident DIYer. The location can vary by model, so always confirm with a service manual. For the Spark EV, it’s typically at the left lower A-pillar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before proceeding.
- Locate the Original BCM: Find the module inside the cabin. Common locations include behind the driver’s or passenger’s side kick panel, under the dash, or in the cowl area.
- Disconnect and Remove: Carefully unplug all electrical connectors from the module. Note their orientation. Then, unbolt or unclip the module from its mounting bracket.
- Install the Replacement: Mount your new, programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions: lights, locks, windows, wipers, and horn.
Important Post-Installation Notes
Our programming service makes this as close to plug-and-play as possible. However, in some GM vehicles, additional steps may be needed:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the BCM with the airbag system.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn might be necessary for proper brake light and traction control operation. This also requires a compatible diagnostic tool.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This module is a direct fit for multiple GM vehicles and is compatible with part numbers 13580698, 13578458, 13589115, 13589637, 13590173, 13590851, 13591300, 13592376, 13593775, 13593776, and 13594564. Please verify the part number on your original module.
- Chevrolet Spark: 2014-2016 (Electric model EV, left lower a-pillar)
- Chevrolet Malibu: 2014-2015 (LH kick panel)
- Chevrolet Malibu: 2016 (VIN 1, Limited, LH kick panel)
- Chevrolet Volt: 2014-2015 (RH engine compartment)
- Chevrolet Camaro: 2014-2015 (RH dash)
- Buick LaCrosse: 2014-2016 (LH kick panel)
- Buick Regal: 2014-2017 (LH dash)
- Cadillac ELR: 2014-2016 (BCM at RH cowl; Communication module at RH engine compartment)
- Cadillac SRX: 2014-2016 (LH dash)
Frequently Asked Questions
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, we transfer its data to the replacement module and ship it back to you, typically within 1-2 business days. This process ensures all your vehicle’s settings and key data are preserved.
Is this truly plug-and-play?
Yes, after our programming service, the module is designed to be plug-and-play. You simply install it, and it will work with your existing keys and settings. In some rare cases, minor relearn procedures may be needed as noted in the description.
What if my airbag light comes on after installation?
This can happen on some models. It means the new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). A mechanic with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to send my old BCM back for a core charge?
No, there is no core charge. We only need your original module to perform the data cloning service. You can keep your original module afterward.
Will this fix my specific electrical problem?
This module corrects issues directly caused by a faulty BCM. The symptoms listed above are the most common indicators. If you’ve had your vehicle professionally diagnosed with a bad BCM, this is the correct solution.