Restore Control and Eliminate Electrical Gremlins
Is your 2011-2013 Chevrolet Caprice or another GM vehicle acting possessed? Flickering lights, malfunctioning power windows, or a security system that won’t cooperate are classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of frustrating, seemingly unrelated problems. In my 20+ years of diagnostics, I’ve seen faulty BCMs lead to expensive, incorrect repairs because the symptoms can mimic other component failures. This isn’t just an inconvenience; it can be a safety issue when lighting or security systems are compromised.
We offer a straightforward, reliable solution. This is a replacement BCM that solves those issues without the exorbitant cost and hassle of a dealership visit. The key is our professional cloning service. You send us your original BCM, and we transfer its exact data—including VIN, mileage, and specific options—to this replacement unit. It arrives at your door ready for installation, with the latest GM software updates applied. This process ensures seamless integration with your vehicle’s existing systems.
Case Study: A Tricky Diagnosis
A 2012 Impala came into the shop with a complaint that was baffling the owner. The dome lights would randomly stay on, the radio would shut off, and occasionally the car wouldn’t start, showing only a flashing security light. The owner had already replaced the battery and alternator. A quick scan showed multiple communication loss codes (U-codes) with various modules. Instead of chasing each code, experience pointed to the central hub: the 2011-2013 Caprice BCM (a compatible part). Water intrusion from a leaky windshield cowl seal had caused corrosion on the BCM pins. By providing a cloned BCM, we had the car fixed in an afternoon, saving the customer from what could have been weeks of frustrating and costly guesswork.
Common Signs of a Failing BCM
If you’re experiencing these issues, a failing BCM is the likely culprit. Don’t let these problems persist—a faulty module can drain your battery or leave you stranded.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The anti-theft or security system light is flashing, preventing the car from starting.
- ✔ Horn sounds unexpectedly or doesn’t work.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or U0164.
- ✔ Wipers behaving erratically or not parking in the correct position.
Your Straightforward BCM Installation Guide
Installing your cloned BCM is a manageable job for a DIY enthusiast or a quick task for any professional mechanic. Following these steps will ensure a smooth process.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow capacitors to discharge.
- Locate the BCM: On most compatible vehicles like the Caprice, Impala, or Acadia, the BCM is located under the driver’s side of the dashboard, often near the steering column or behind a kick panel. For vans like the Express/Savana, it’s typically in the center dash area.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a click as they lock into place.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Relearn Procedures: Start the vehicle. As noted in our policies, some vehicles may require a ‘Brake Pedal Position Relearn’ or an ‘Airbag System Sync’ with a capable scan tool if a warning light appears. This is a normal part of the process for restoring full system communication.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15819552 and is interchangeable with a wide range of other part numbers. It is guaranteed to fit the following vehicles. Please match your vehicle or part number to ensure compatibility.
Interchangeable 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.
Fits Models Including: Acadia (07-12), Avalanche 1500 (10), Caprice (11-13), Captiva Sport (12), CTS (08-13), DTS (06-11), Enclave (08-12), Equinox (07-09), Escalade/ESV/EXT (10), Express/Savana Vans (08-12), G8 (08-09), Hummer H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), SRX (07-09), STS (10), Suburban 1500 (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon/XL 1500 (10). Note: Specific options or IDs may apply; please verify with the provided list.
Frequently Asked Questions
What is a cloning service?
Cloning is a service where we transfer the critical vehicle-specific data (like VIN, security information, and optional features) from your original BCM directly onto the replacement unit. This makes the module plug-and-play, avoiding the need for expensive dealership programming.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, we need your original module to extract the necessary data. We will return your original module to you along with the newly programmed replacement.
Will this fix my specific problem?
This BCM corrects issues directly caused by a faulty module, such as the symptoms listed above. While it is a very common failure point, we always recommend a proper diagnosis by a qualified technician to confirm the BCM is the root cause before purchasing.
What if my airbag light comes on after installation?
This is an infrequent but known possibility. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag system. A professional scan tool is used to perform the ‘Setup SDM Primary Key in BCM’ procedure, which syncs the systems and turns off the light.
Is this a difficult part to install myself?
For someone with basic mechanical skills and tools, it’s generally a straightforward replacement. The most important parts are disconnecting the battery and being careful with the plastic trim panels and electrical connectors. The location under the dash can be tight to work in.
What is your core policy?
We do not require a core in the traditional sense, as your original module is required for the cloning service. Your original BCM will always be shipped back to you with your replacement unit.