Restore Full Electrical Function to Your GM Vehicle
Are you battling bizarre electrical issues in your GM car, truck, or SUV? Flickering lights, malfunctioning power windows or door locks, a persistent security light, or even a no-start condition can all point to one culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable problems. This isn’t just an inconvenience; it can affect your vehicle’s security and safety systems. This is a direct-fit, VIN-programmed solution to get your vehicle operating correctly again.
A Technician’s Notebook: The 2011 Impala Mystery
I once had a 2011 Impala in my bay that was driving the owner crazy. The radio would turn on by itself, the interior lights would stay on draining the battery overnight, and the remote key fob worked intermittently. The owner had already replaced the battery twice. After connecting my scan tool, I saw multiple communication codes (U-codes) pointing to a network problem. From years of experience, I knew these ghost-like issues were classic signs of an internal BCM failure. Instead of a costly trip to the dealer for a new module and programming, we installed a VIN-programmed BCM like this one. The problems vanished instantly, saving the customer hundreds of dollars and a lot of headaches. This is the exact fix for those hard-to-diagnose electrical gremlins.
What Makes This BCM the Smart Solution?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and extra steps out of the repair. Before we ship it, our technicians will program the module with the latest GM software updates, specifically matched to your vehicle using your VIN. This ensures all the features and functions your vehicle came with will work correctly right out of the box, eliminating the need for expensive dealership programming.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that won’t turn on or off.
- ✔ A security or anti-theft light that stays on, potentially preventing the engine from starting.
- ✔ Intermittent operation of the horn, windshield wipers, or radio.
- ✔ False warnings on the instrument cluster (e.g., “Door Ajar”).
- ✔ Communication error codes, such as U0140, U0155, or other U-codes, stored in the system.
- ✔ Unexplained battery drain that leaves you with a dead battery.
A Straightforward Guide to Your BCM Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes for the system capacitors to discharge.
- ✔ Locate the BCM: The location varies by model (see fitment list below). It’s typically found under the driver’s side dash, near the steering column, or in the center console 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 old module and remove it from the vehicle.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Perform Relearns: Start the vehicle. Some models may require the post-installation procedures outlined below for systems like the airbags or brake sensor. This is normal and ensures all systems are communicating properly.
Important Post-Installation Steps
After installation, your vehicle might require one or more of the following procedures to ensure full functionality. This is a standard part of replacing a modern vehicle computer.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to restore proper brake light and traction control operation.
- No Core Charge: You are not required to return your old BCM. This saves you the time and expense of a core return.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified professional if you are unsure about any step.
Guaranteed Fitment for Your GM Vehicle
This BCM is a direct replacement for 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, and 95151084.
It is compatible with a wide range of models including, but not limited to:
- Acadia (2007-2012)
- Avalanche 1500 (2010)
- Caprice (2011-2013)
- Captiva Sport (2012)
- CTS (2008-2013)
- DTS (2006-2011)
- Enclave (2008-2012)
- Equinox (2007-2009)
- Escalade, ESV, EXT (2010)
- Express / Savana Vans (2008-2012)
- G8 (2008-2009)
- Hummer H2 (2008-2009)
- Impala (2006-2013)
- Lucerne (2006-2011)
- Monte Carlo (2006-2007)
- Outlook (2007-2010)
- SRX (2007-2009)
- STS (2010)
- Suburban 1500 (2010)
- Tahoe (2010)
- Torrent (2007-2009)
- Traverse (2009-2012)
- Vue (2008-2010)
- Yukon / Yukon XL 1500 (2010)
Frequently Asked Questions
Why do you need my VIN?
Your VIN (Vehicle Identification Number) is essential for us to program the GM Body Control Module correctly. It allows us to load the specific software and settings for your vehicle’s exact configuration, ensuring all your original features work perfectly.
Is this part difficult to install for a DIYer?
For most models, the physical installation is straightforward, typically involving a few bolts and electrical connectors. The main challenge is usually accessing the BCM’s location. By providing a pre-programmed module, we eliminate the most difficult step: the software setup.
What happens if my airbag light comes on after I install it?
This can happen and is usually not a sign of a defective part. The new BCM needs to be electronically ‘introduced’ to the airbag system (SDM). This requires a ‘Setup SDM Primary Key’ procedure with a bi-directional scan tool, which a professional mechanic can perform quickly.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your old module, which saves you the hassle and cost of return shipping.
Will this fix my car not starting?
It can. A common BCM failure involves the vehicle’s anti-theft or security system (Pass-Key/Passlock). If the BCM isn’t recognizing your key, it will prevent the engine from starting. This programmed module restores that function. However, a no-start can have many causes, so proper diagnosis is key.