Tired of Chasing Electrical Gremlins? Here’s the Solution.
As a technician with over two decades of experience, I’ve seen firsthand the chaos a failing Body Control Module (BCM) can cause. One minute the power locks work, the next they don’t. The dashboard lights up like a Christmas tree with no clear cause, and you’re left chasing phantom electrical issues that drain your time and patience. This isn’t just an inconvenience; it can affect vehicle security and safety systems. The BCM is the central hub for your vehicle’s body electronics, and when it fails, it takes a host of functions down with it.
This is the definitive, hassle-free fix. We offer a reliable GM Body Control Module that arrives at your doorstep pre-programmed to your vehicle’s specific VIN. Forget about expensive dealership visits, towing fees, and the headache of scheduling a programming appointment. Simply provide us with your VIN during checkout, and our experts will flash the module with the latest GM software updates, ensuring it’s ready for installation right out of the box. This restores the critical communication pathways between your vehicle’s systems, from the power windows to the anti-theft system.
A Technician’s Notebook: The Case of the Erratic Enclave
A 2015 GMC Acadia came into my bay with a laundry list of bizarre complaints: the radio would shut off randomly, the liftgate wouldn’t open, and the “Service StabiliTrak” light was on. The owner had already replaced the battery, thinking it was a simple voltage issue. My diagnostic scan tool pulled a U0140 code—Lost Communication With Body Control Module. After confirming the power and grounds to the BCM were solid, it was clear the module itself was failing internally. Instead of a costly dealer part and programming, we used one of these VIN-programmed modules. The installation was straightforward, and upon startup, all the gremlins were gone. It saved the customer hundreds of dollars and hours of frustration.
Is Your Vehicle Showing These BCM Failure Signs?
- ✔ Intermittent or non-functional power windows, door locks, or interior lights.
- ✔ The security or anti-theft system light stays on, preventing the vehicle from starting.
- ✔ Dashboard warning lights (like ABS, Airbag, or StabiliTrak) illuminate without a clear mechanical cause.
- ✔ Communication error codes, most commonly U0140, are present when scanned.
- ✔ Wipers, horn, or remote keyless entry operate erratically or not at all.
- ✔ The climate control system behaves unpredictably.
A Straightforward Guide to Your BCM Replacement
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Locate the BCM: On most compatible models, the BCM is located under the driver’s side of the dashboard (LH dash) or behind the center dash panel. Consult a service manual for your specific vehicle’s location.
- ✔ 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 and remove it.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position (without starting the engine) and test the functions: windows, locks, lights, and radio.
- ✔ Perform Relearns (If Needed): Start the vehicle. If an airbag light appears or brake functions seem off, perform the necessary post-installation procedures as outlined in our FAQ. A short drive may be required for all systems to fully sync.
Verified Compatibility for Your GM Vehicle
This module is a direct-fit replacement for part numbers 22820314 and 22915542. It is guaranteed to fit the following vehicles. Please verify your model and options to ensure proper fitment.
ENCLAVE 13-17 (LH dash)
Cadillac:
CTS 14 SW (LH dash)
CTS 14-15 Cpe (LH dash)
CTS 14 Sdn, VIN D (4th digit, V-Series) (LH dash)
Chevrolet:
CAPTIVA SPORT 13-15 (center dash)
EXPRESS 1500 VAN 13-14 (center dash)
EXPRESS 2500 VAN 13-18 (center dash)
EXPRESS 3500 VAN 13-18 (center dash)
IMPALA 13 (LH dash), ID 22820314 or 22915542
IMPALA 14-16 VIN W (4th digit, Limited) (LH dash)
TRAVERSE 13-17 (LH dash)
GMC:
ACADIA 13-16 (LH dash)
ACADIA 17 VIN J (11th digit, Limited) (LH dash)
SAVANA 1500 VAN 13-14 (center dash)
SAVANA 2500 VAN 13-18 (center dash)
SAVANA 3500 VAN 13-18 (center dash)
Frequently Asked Questions
How does the VIN programming process work?
After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. We use this number to access the latest GM software for your specific model and options, then flash the BCM before shipping. This ensures it communicates correctly with your vehicle’s other modules.
Do I need to send my old BCM back?
No. This purchase requires no core charge. You can keep your original module, which can be helpful for double-checking part numbers or for any future reference.
What tools are required for installation?
For most vehicles, basic hand tools like a socket set and a trim removal tool are all that’s needed to access and replace the BCM. No special programming tools are required for the initial installation.
My airbag light is on after installing the new BCM. What should I do?
This can happen occasionally. It means the new BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Will I need to perform a brake pedal position relearn?
Depending on your specific model, a brake pedal position sensor recalibration may be necessary to ensure your brake lights and traction control system function properly. This procedure can typically be done with a high-end bidirectional scan tool.