Restore Control and End Electrical Frustrations
Is your Chevrolet Impala or other GM vehicle acting like it has a mind of its own? Flickering lights, malfunctioning power windows, a stubborn security system, or an instrument cluster that lights up with random warnings are all hallmark signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can turn a reliable car into a source of daily frustration. I’ve seen it countless times in the shop: a vehicle comes in with a list of seemingly unrelated electrical gremlins that stump everyone, only for the root cause to be this single component.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine OEM BCM and professionally program it with the latest GM software updates specifically for your vehicle’s VIN. This means you can bypass the expensive trip to the dealership for programming. You get a reliable, fully functional BCM that restores order to your vehicle’s complex electronic systems, allowing you to drive with confidence again. This is the definitive fix for anyone struggling with the bizarre symptoms of BCM failure.
A Technician’s Notebook: The Ghost in the Traverse
A customer brought in a 2015 Traverse that was driving them crazy. The dome lights would flicker randomly, the radio would sometimes not turn on, and occasionally, the vehicle wouldn’t start. They had already replaced the battery and checked the alternator. After hooking up my scan tool, I found a slew of ‘Lost Communication with BCM’ codes (U0140). Instead of just throwing parts at it, I checked the power and ground feeds to the BCM, which were solid. This told me the module itself was failing internally. We installed one of our pre-programmed BCMs, and every single issue vanished. It’s a classic case where a single component, the 2013-2016 Impala BCM (which fits the Traverse), was causing system-wide chaos.
Common Signs of a Failing BCM
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior dome lights or exterior lights staying on, draining your battery.
- ✔ The security system engaging randomly or a persistent “Service Theft Deterrent System” message.
- ✔ Horn not working or sounding unexpectedly.
- ✔ Instrument panel warning lights appearing for no reason.
- ✔ Stored diagnostic trouble codes (DTCs) like U0140, B1001, or other communication faults.
- ✔ A no-start condition where the engine cranks but won’t fire up due to security system confusion.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most supported models like the Impala, Traverse, and Acadia, the BCM is located on the left-hand (driver’s) side of the dashboard, often behind the lower dash panel. For vans like the Express and Savana, it’s typically in the center dash area.
- ✔ Access the Module: You may need to remove a few trim panels to gain clear access. A plastic trim removal tool can prevent scratches.
- ✔ Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. Note their orientation. Then, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors.
- ✔ Power Up: Reconnect the negative battery terminal.
- ✔ Perform Final Checks: Start the vehicle and test all body functions—windows, locks, lights, horn, and wipers. Address any warning lights using the post-installation procedures noted below.
Important Post-Installation Information
While this 2013-2016 Impala BCM is programmed to be as close to plug-and-play as possible, certain vehicle systems may require a ‘handshake’ with the new module. This is normal. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” function. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure brake lights and traction control function correctly. This also typically requires a bi-directional scan tool.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 22915542 and 22820314 and fits a wide range of GM vehicles. Please verify your vehicle is on this list before ordering:
- Acadia: 2013-2016 (LH dash)
- Acadia Limited: 2017 (VIN J, 11th digit) (LH dash)
- Captiva Sport: 2013-2015 (center dash)
- CTS: 2014 (SW, LH dash), 2014 (Sdn, V-Series), 2014-2015 (Cpe, LH dash)
- Enclave: 2013-2017 (LH dash)
- Express 1500/2500/3500 Van: 2013-2018 (center dash)
- Impala: 2013 (ID 22915542 or 22820314), 2014-2016 (VIN W, 4th digit, Limited) (LH dash)
- Savana 1500/2500/3500 Van: 2013-2018 (center dash)
- Traverse: 2013-2017 (LH dash)
Frequently Asked Questions
2013-2016 Impala BCM
Will this fix my specific problem?
This part corrects issues caused by a faulty BCM. If your vehicle exhibits the symptoms listed, such as erratic lights, lock failures, or security alerts, a new is the most likely solution. Proper diagnosis is always recommended.