If you’re dealing with bizarre electrical problems in your 2014 Chevrolet Impala—like power windows with a mind of their own, flickering interior lights, or a security system that prevents your car from starting—you’ve likely pinpointed the culprit: a failing Body Control Module (BCM). As an automotive diagnostician with over two decades of experience, I’ve seen how a faulty BCM can turn a reliable vehicle into a source of constant frustration. It’s the central nervous system for your car’s comfort and convenience features, and when it goes, chaos ensues.
Forget the dealership headache of sky-high prices, towing fees, and waiting days for programming. We offer a streamlined, cost-effective solution. This listing is for a fully tested, replacement BCM that is professionally programmed using the data from your original module. This cloning process ensures that all your vehicle’s specific settings, key information, and security data are perfectly transferred. The result is a true plug-and-play module, ready for installation right out of the box, getting you back on the road with confidence.
Common Signs of a Failing Body Control Module
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system light stays on, often causing a no-start condition.
- ✔ Dashboard warning lights appear randomly or stay illuminated without a clear cause.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Communication failure codes (U-codes) stored in the system, such as U0140, indicating a loss of communication with the BCM.
- ✔ Wipers or radio malfunctioning intermittently.
A Technician’s Notebook: The Ghost in the Machine
A customer brought in their 2014 Impala with a list of complaints that sounded like the car was haunted. The dome light would flicker at night, the driver’s window would sometimes refuse to go down, and occasionally the car wouldn’t recognize the key fob. They had already replaced the battery to no avail. My initial scan showed a handful of intermittent communication codes. Instead of chasing each individual symptom, experience pointed me straight to the central hub: the BCM. We confirmed it was failing internally. By providing a cloned 2014 Impala BCM, we solved all the issues in one go, saving the customer hundreds compared to the dealership’s quote for a new module and programming.
Your Straightforward BCM Installation Guide
Installing your programmed 2014 Impala BCM is a manageable task for a DIYer. The BCM on this model is located on the left-hand side of the dash. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On the 2014 Impala (New Style, VIN 1), you’ll find the BCM behind the lower left side of the dashboard. Access may require removing a lower dash panel.
- 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, pre-programmed BCM in the same location and securely reconnect all the electrical connectors. Ensure they click into place.
- Reconnect Power: Reattach the negative battery terminal.
- Post-Installation Checks: Start the vehicle and test all body functions—lights, locks, windows, radio, etc. Please see the important notes below regarding potential follow-up procedures.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a ‘handshake’ with the new BCM. These do not always occur but are important to be aware of:
- Airbag System Sync: If the airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible professional scan tool. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be needed to ensure correct brake light operation and to keep the traction control system happy.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Fitment For These GM Models
This BCM is a direct-fit replacement for part numbers 13586589, 13589093, and 13580689. It is guaranteed to be compatible with the following vehicles and options:
- 2013 Cadillac ATS: Body Control (BCM); (on firewall)
- 2013 Cadillac XTS: Body Control (BCM); (left front hinge pillar)
- 2013-2014 Chevrolet SONIC: Body Control (BCM); (RH rear quarter panel)
- 2014 Chevrolet IMPALA: Body Control (BCM); VIN 1 (4th digit, New Style), (LH dash)
Frequently Asked Questions
Frequently Asked Questions
How does the programming service work?
It’s simple. After you place your order, we will contact you with instructions to ship your original BCM to us. Once we receive it, we extract the unique data and transfer it to the replacement unit. We then ship the ready-to-install BCM back to you, typically within one business day.
Is this really plug-and-play?
Yes. Because we clone your original module’s data, the replacement BCM is recognized by your vehicle’s other computers. This eliminates the need for expensive dealership programming. In some rare cases, a simple relearn procedure may be needed as outlined above.
Do I need to send my keys or any other parts?
No, we only need your original Body Control Module. The key and security information is stored within the BCM, which is what we transfer during our cloning process.
What happens if the airbag light comes on after I install it?
This is a known possibility and is easily resolved. The airbag module (SDM) may need to be electronically re-introduced to the new BCM. This is done with a ‘Setup SDM Primary Key in BCM’ function on a professional-grade scan tool.
Is there a core charge?
No. We do not require you to return the replacement module’s core, and you can keep your original, non-working BCM.
Why is this better than buying a used BCM from a junkyard?
A used BCM from another vehicle will have the wrong VIN and security information. It will not work in your car without being completely wiped and reprogrammed by a dealer, which is often not possible or is very expensive. Our service provides a part that is already programmed specifically for your car.