Tired of Bizarre Electrical Problems in Your GM Vehicle?
As a technician with over two decades of experience, I’ve seen it all. A customer comes in with a vehicle that seems possessed: the dashboard lights flicker like a disco, the power windows have a mind of their own, the radio turns on and off randomly, or worse, the car won’t start because the security system is acting up. These frustrating, hard-to-diagnose issues often point to one culprit: a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s comfort and convenience features, and when it goes bad, it can cause chaos.
Instead of facing a costly trip to the dealership for a new module and expensive programming fees, we offer a simple, reliable solution. This listing is for a direct replacement BCM, part number 15299986, that comes ready for installation through our professional GM BCM Cloning Service. This isn’t just a generic programmed module; we transfer the exact data from your original BCM to this replacement unit. The result? A true plug-and-play fix that retains all your vehicle’s specific settings and options without any additional programming required.
A Technician’s Notebook: The 2010 Tahoe with a Mind of Its Own
Just last month, a 2010 Chevy Tahoe was brought into the bay. The owner was at his wit’s end. The door locks would cycle while driving, the interior lights wouldn’t turn off, and the remote key fob worked only intermittently. A scan showed a handful of communication codes, including the dreaded U0140 (Lost Communication With Body Control Module). After verifying the power and ground circuits to the BCM were solid, we knew the module itself was the problem. Instead of a multi-day wait and a $1000+ bill from the dealer, we used our cloning service. We had the original BCM cloned to a replacement unit and sent back to the customer. He installed it himself in under an hour, and all the electrical gremlins were gone. It’s a straightforward solution that saves time, money, and a massive headache.
Is Your GM Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your Body Control Module is the likely cause:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ Malfunctioning radio, climate controls, or instrument cluster gauges.
- ✔ A security system that prevents the vehicle from starting (blinking security light).
- ✔ Remote keyless entry (RKE) failure.
- ✔ Diagnostic Trouble Codes (DTCs) such as U0140, B1000, or B1327 stored in the system.
Our Simple and Effective GM BCM Cloning Service
Our process is designed to be as easy as possible. After you purchase the module, you simply ship your original BCM to us. We then perform a full data transfer to the replacement unit, ensuring all factory settings, key information, and vehicle options are perfectly mirrored. We ship both your original module and the ready-to-install replacement back to you. This eliminates the need for any special diagnostic tools for programming, making it a perfect solution for both DIY mechanics and professional shops.
A Straightforward Guide to BCM Installation
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: The location varies by model (see fitment list below). It’s typically found under the driver’s side dash, behind the glove box, or in the center console area.
- Remove the Original BCM: Carefully unplug the electrical connectors. Most have a locking tab that needs to be depressed or a lever that needs to be swung over. Once disconnected, remove any bolts or clips holding the module in place.
- Ship Your Module: Securely package your original BCM and send it to us. We’ll handle the cloning process promptly upon receipt.
- Install the Cloned BCM: Once you receive your modules back, simply install the cloned replacement unit by reversing the removal steps. Ensure all connectors are securely latched.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair was successful.
Important Post-Installation Information
In some cases, minor relearn procedures may be necessary after installation. This is normal and ensures all related vehicle systems are properly synced.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This is only needed if the light is on.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to satisfy the traction control system.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step of the process.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15299986 and interchanges with a wide range of other part numbers. It is compatible with the following GM vehicles:
This module replaces the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Frequently Asked Questions
What is a BCM cloning service?
Cloning is the process of reading the critical vehicle-specific data (like VIN, key codes, and optional features) from your original BCM and writing it directly onto the replacement module. This makes the new module an exact digital copy of the old one, allowing it to work in your vehicle without any further programming.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, we must have your original module to extract the data. We will return your original module along with the newly cloned replacement.
Is this a plug-and-play solution?
Yes, in over 99% of cases. Because we are cloning your original data, the vehicle will recognize the replacement module as its own, eliminating the need for programming. In rare instances, a minor relearn procedure (like for the brake pedal position sensor) may be required as outlined above.
What if my original BCM is not communicating?
Even if your BCM is failing and causing issues, we can often still extract the necessary data from the memory chip. Please contact us with your specific symptoms if your module is completely dead or has water/fire damage before ordering.
Will this fix my specific problem?
This module will fix any issue directly caused by a faulty BCM. It’s crucial to properly diagnose the problem first. This part will not fix issues related to faulty wiring, sensors, or other modules in the vehicle.