Restore Your Vehicle’s Core Electrical Functions
Are you battling bizarre electrical issues in your GM vehicle? Flickering lights, malfunctioning power windows, or a security system that has a mind of its own are all classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s comfort and security features, a faulty BCM can turn your daily drive into a frustrating ordeal. This isn’t just an inconvenience; it can affect vehicle security and safety systems. I’ve seen it countless times in my 20+ years in the shop—a simple BCM failure can mimic a dozen other problems, leading to expensive and incorrect diagnoses.
We offer a straightforward, reliable solution. This is a high-quality replacement GM Body Control Module that comes with our expert cloning service. Simply send us your vehicle’s original BCM, and we will transfer all the critical data—including your VIN, mileage, and key information—to this replacement unit. The result? A module that is truly plug-and-play. You avoid costly dealership programming fees and the hassle of relearning keys. It’s the smart, efficient fix that gets you back on the road without the headache.
Case Study: A Tricky Diagnosis
Just last month, a 2011 Chevy Impala was towed to our shop. The owner was frustrated; the car wouldn’t start intermittently, the radio would turn on and off by itself, and the anti-theft light was constantly flashing. He had already replaced the battery and alternator with no luck. A quick scan showed a U0140 code—Lost Communication With Body Control Module. Instead of a complex wiring chase, we started with the most common culprit. After confirming the BCM was the issue, we used our cloning service to prepare a replacement. The customer had his original module back along with the newly programmed one, installed it himself in under 30 minutes, and all the electrical gremlins were gone. It’s a testament to how a targeted, professional fix can save hundreds in diagnostic time and parts.
Common Signs of a Failing BCM
- ✔ Unpredictable power door lock or window operation.
- ✔ The security system light stays on, or the alarm goes off randomly.
- ✔ Intermittent no-start or crank-no-start conditions.
- ✔ Dash lights, interior lights, or headlights flicker or don’t work correctly.
- ✔ Communication error codes, such as U0140, are present.
- ✔ Wipers or horn activating unexpectedly.
A Straightforward Guide to Installation
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents short circuits and protects the vehicle’s electronic systems.
- Locate and Remove: Find the original BCM. Its location varies by model (e.g., under the dash, behind the glove box, or in the center console). Carefully disconnect the wiring harnesses and unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the exact same location. Reconnect all the wiring harnesses securely, ensuring each plug is fully seated.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions: lights, locks, windows, radio, and wipers to confirm the repair was successful.
Important Post-Installation Information
Our cloning service makes this process as simple as possible, but due to the complexity of modern vehicles, a couple of steps might be needed after installation:
- Airbag System Sync: If the airbag warning light is illuminated after you install the new BCM, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the modules and clears the light.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be required to ensure your brake lights and traction control system function as intended.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15819552 and interchanges with a wide range of other part numbers. It is compatible with numerous GM vehicles, including but not limited to:
- Buick: Enclave (08-12), Lucerne (06-11)
- Cadillac: CTS (08-13), DTS (06-11), Escalade / ESV / EXT (10), SRX (07-09), STS (10)
- Chevrolet: Avalanche (10), Captiva Sport (12), Caprice (11-13), Equinox (07-09), Express Vans (08-12), Impala (06-13), Monte Carlo (06-07), Suburban (10), Tahoe (10), Traverse (09-12)
- GMC: Acadia (07-12), Savana Vans (08-12), Yukon / Yukon XL (10)
- Hummer: H2 (08-09)
- Pontiac: G8 (08-09), Torrent (07-09)
- Saturn: Outlook (07-10), Vue (08-10)
Note: Please verify your original part number or consult the detailed fitment list in the original description to ensure perfect compatibility. Some models require matching specific ID numbers listed on the module.
Frequently Asked Questions
What is a BCM cloning service?
Our cloning service is a process where we transfer the exact configuration data—like the VIN, mileage, and key security information—from your original, failing BCM to this replacement unit. This ensures the module is a perfect match for your vehicle’s specific options and security system, making the installation plug-and-play.
Will I need to program this GM Body Control Module after I receive it?
No. Because we clone the data from your original module, no further programming or key relearning is required on your end. The only potential follow-up steps are the airbag system sync or brake pedal relearn, which are only needed if specific warning lights appear.
What happens to my original module?
We always return your original module to you along with the programmed replacement unit. We do not keep your old part.
How do I find the BCM in my vehicle?
The BCM location varies. Common spots include behind the driver’s or passenger’s side of the dashboard, under the center console, or near the interior fuse panel. A quick search for your specific year, make, and model online or consulting a service manual will provide the exact location.
Is this a reliable fix for my car’s electrical problems?
Yes. A failing BCM is one of the most common causes of widespread, intermittent electrical issues in modern vehicles. Replacing it with our pre-programmed module is a proven and effective solution that restores factory functionality.