Restore Your Vehicle’s Electrical System with a Reliable, Programmed BCM
Are you chasing down frustrating electrical gremlins in your GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or an intermittent no-start condition can often be traced back to one central component: a failing Body Control Module (BCM). As the nerve center for your vehicle’s body electronics, when the BCM falters, it can cause a cascade of confusing and unpredictable problems. This isn’t just an annoyance; it can affect vehicle safety and reliability.
This is a direct-fit replacement GM Body Control Module, solving these issues for good. We take the guesswork and high dealership costs out of the equation. Simply provide your vehicle’s VIN at checkout, and our experts will program the module with the latest GM software specific to your car or truck. It arrives at your door ready for installation, saving you from expensive diagnostic tools and service center appointments.
Case Study: A Tricky Diagnosis
I remember a 2011 Chevy Impala that came into my shop with a classic head-scratcher. The owner had already replaced the battery and alternator, but the car would still intermittently refuse to start, and the dash lights would flicker randomly while driving. A basic scan tool showed no engine codes. However, a deeper network scan revealed communication loss codes (U-codes) pointing to the BCM. Water intrusion from a leaky windshield cowl seal had caused corrosion on the BCM’s circuit board. Installing a VIN-programmed GM Body Control Module didn’t just fix the starting and lighting issues—it restored the power locks and remote start, which the owner didn’t even realize were connected. It’s a perfect example of how this single module can solve a host of seemingly unrelated problems.
Common Signs of a Failing BCM
If your vehicle is exhibiting any of these symptoms, a faulty BCM is the likely culprit. A failing module can trigger various diagnostic trouble codes (DTCs), most commonly communication errors like U0140.
- ✔ Erratic or non-functional interior and exterior lights
- ✔ Power windows, door locks, or mirrors working intermittently or not at all
- ✔ The security system or keyless entry failing
- ✔ Unexplained battery drain when the vehicle is off
- ✔ Warning lights on the dashboard (including Airbag or ABS) with no apparent cause
- ✔ Intermittent no-crank, no-start conditions
- ✔ Horn sounding unexpectedly or not working
A Straightforward Guide to BCM Installation
Replacing the BCM is a manageable job for a DIY enthusiast. While the exact location varies by model (see fitment list), it’s typically found under the dash. Always consult a service manual for your specific vehicle.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: Find the old BCM. It’s often on the driver’s side, near the steering column or behind a kick panel. In some vans, it’s in the center dash area.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be pressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in place of the old one. Securely reconnect all electrical harnesses, ensuring they click into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Perform Relearns: Start the vehicle. As noted below, you may need to perform a Brake Pedal Position Relearn or an Airbag System Sync if warning lights appear. This is a normal part of the process.
Important Post-Installation Steps
Because this GM Body Control Module is new and programmed to your VIN, some related systems may need to be re-synchronized. This is standard procedure.
- Airbag System Sync: If the airbag light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional scan tool to sync the airbag module with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure brake lights and stability control function correctly.
- No Core Charge: You are not required to return your old module. There is no core charge or deposit associated with this purchase.
Verified Fitment For These GM Models
This module is a direct replacement for a wide range of GM vehicles. Please confirm your model and year below. This part replaces numerous original part numbers including 10382479, 15093910, 15276271, 20815898, 22860591, 25892622, and more.
- 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 (1500, 2500, 3500): 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
Why do I need to provide my VIN?
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) allows us to program the Body Control Module with the exact software and vehicle-specific options (like keyless entry, lighting packages, etc.) that your car had from the factory. This ensures compatibility and proper function without needing a trip to the dealership.
Is this part difficult to install?
For most DIYers with basic tools, this is a straightforward replacement. The BCM is usually accessible under the dashboard. The most important part is carefully disconnecting the old module and securely connecting the new one. Since it’s pre-programmed, the hardest part of the job is already done for you.
What does a Body Control Module (BCM) do?
The BCM is a computer that controls many of your vehicle’s non-engine related electronic features. This includes power windows, power mirrors, interior and exterior lighting, the security system, door locks, and even the horn. It acts as a central hub for these body electronics.
Do I need to send my old BCM back?
No. This purchase does not require a core return. There is no core charge, and you can keep or dispose of your original module.
What if the airbag light comes on after I install it?
This is a possibility and is considered a normal step in the process for some vehicles. The new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). This procedure, called ‘Setup SDM Primary Key in BCM’, requires a professional-grade scan tool but is a quick process for any competent repair shop.