Restore Full Functionality to Your GM Vehicle with a Perfectly Matched BCM
Are you battling a storm of bizarre electrical issues in your 2011-2012 Buick LaCrosse? Flickering lights, malfunctioning power windows, random warning messages, or a car that refuses to start can often be traced back to one central component: a failing Body Control Module (BCM). As the nerve center for your vehicle’s comfort and convenience features, a faulty BCM can make driving a frustrating and unpredictable experience. This isn’t just an inconvenience; it can affect safety systems like your lighting and security.
Instead of facing a costly trip to the dealership for a new module and expensive programming fees, we offer a streamlined, reliable solution. This listing is for a replacement BCM, part number 13583451 (and its equivalents), that is professionally programmed using the data from your original module. This cloning service ensures that the replacement BCM is a perfect digital match for your vehicle’s specific configuration, including its VIN and optional features. The result is a true plug-and-play fix that gets you back on the road without the dealership hassle.
A Technician’s Notebook: The Case of the Erratic LaCrosse
A customer brought in a 2012 LaCrosse with a laundry list of complaints: the radio would turn off randomly, the driver’s side window wouldn’t go down, and the “Service Security System” light was on. Initial scans showed a flurry of U-codes (communication errors) pointing to the BCM. After verifying the power and ground circuits to the module were solid, it was clear the BCM itself was failing internally. These modules manage so many data networks that when they fail, they often create ghost-like problems across the vehicle. By cloning his original BCM data to our replacement unit, we had all the issues resolved in a single afternoon, saving him hundreds compared to the dealer quote. This is the most effective repair for these complex failures.
Signs Your LaCrosse BCM is Failing
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your Body Control Module is the likely culprit. Look out for communication-related Diagnostic Trouble Codes (DTCs) like U0140, U0155, or other U-codes.
- ✔ Power windows, door locks, or interior lights operate erratically or not at all.
- ✔ The anti-theft system activates randomly or prevents the car from starting.
- ✔ Dashboard warning lights (like ABS, Airbag, or StabiliTrak) illuminate for no reason.
- ✔ The horn, wipers, or remote keyless entry system fails to work correctly.
- ✔ A persistent battery drain when the vehicle is off.
- ✔ Communication loss with other vehicle modules, leading to a no-start condition.
Your Straightforward BCM Installation Guide
Our cloning service makes the physical installation simple. Here’s a general guide to swapping the module in your LaCrosse. Remember to always consult a service manual for specifics.
- 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: In the 2011-2012 LaCrosse, the BCM is typically found behind the driver’s side (LH) kick panel, near the fuse box.
- Access the Module: You may need to remove trim panels to gain clear access to the BCM. Take care not to break any plastic clips.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all electrical connectors, ensuring they click into place.
- Reconnect and Test: Re-attach the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, radio, etc.—to confirm the repair.
Important Steps After Installation
While our service eliminates the need for programming, some vehicles may require simple relearn procedures to sync related systems:
Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the BCM with the airbag module.
Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure correct brake light operation and traction control functionality.
No Core Charge: You can keep your original module, as there is no core charge or need to return it after the service is complete.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or a qualified technician for detailed instructions specific to your vehicle.
Guaranteed Vehicle Compatibility
This BCM and programming service is a direct-fit solution for a wide range of GM vehicles. Your module will be programmed to be compatible with your specific vehicle. This part fits the following models and part numbers, including the primary 2011-2012 LaCrosse BCM:
- Interchangeable Part Numbers: 13579004, 13580198, 13582396, 13583450, 13586856, 13582688, 13586278, 13501737, 13501739, 13577924, 13580773, 13583451
- Buick: LaCrosse (2011-2012), Regal (2011)
- Cadillac: SRX (2011-2012)
- Chevrolet: Camaro (2011), Cruze (2012), Equinox (2011), Orlando (2012), Volt (2011, 2013)
- GMC: Terrain (2011)
Frequently Asked Questions
How does the programming service work?
After you purchase, we will provide you with instructions to ship your original BCM to us. We then extract the vehicle-specific data and transfer it to the replacement module. We ship the ready-to-install BCM back to you, typically within 1-2 business days of receiving your original.
Will I need to do any programming myself?
No. Our cloning service makes this a plug-and-play module. You will not need to visit a dealer or use a special scan tool for programming. However, minor relearn procedures, like for the airbag or brake pedal sensor, may be needed in some cases.
Is this compatible with my exact car?
Yes. By cloning your original module, we ensure the replacement is 100% compatible with your vehicle’s VIN, mileage, and all factory-installed options. Just confirm your original part number is on our interchange list.
What if my original BCM is completely dead or missing?
If your original module is non-communicative or lost, we may still be able to help. Please contact us before purchasing to discuss options, as we can sometimes retrieve data from other vehicle modules.
Do I need to return my old BCM?
No. Once we have cloned the data from your original module, you do not need to send it back to us. There is no core charge associated with this purchase.