Restore Your Vehicle’s Electronic Stability and Function
Are you battling a storm of baffling electrical problems in your Cadillac or GM vehicle? Intermittent power windows, flickering dash lights, malfunctioning door locks, or a radio with a mind of its own are classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause widespread and frustrating issues, often leading to diagnostic dead ends. In my 20+ years of experience, I’ve seen these modules cause everything from simple annoyances to no-start conditions due to lost communication with the immobilizer system.
This isn’t just a replacement part; it’s a direct solution. We take the hassle and high cost of dealership programming out of the equation. Simply provide your vehicle’s VIN at checkout, and our technicians will flash this module with the latest, most stable software from GM, ensuring it’s ready for installation right out of the box. This process restores the precise communication pathways your vehicle was designed with, resolving the root cause of those electrical gremlins.
Real-World Repair Story
A 2014 Cadillac CTS came into the shop with a complaint that would drive any owner crazy: sometimes it would start, sometimes it wouldn’t. The battery was new, the starter was fine. When it failed to start, the security light would flash. Hooking up the scan tool revealed a cascade of U-codes, primarily U0140 – Lost Communication With Body Control Module. The BCM wasn’t just failing; it was intermittently dropping off the vehicle’s data network, taking other systems down with it. After confirming power and ground to the module were solid, we knew the BCM itself was the culprit. Installing a pre-programmed 2014-2015 CTS BCM like this one solved the problem instantly. The car started every time, and all communication codes were cleared for good.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system light stays on, preventing the engine from starting.
- ✔ The horn honks unexpectedly or doesn’t work at all.
- ✔ Dashboard warning lights (like Airbag, ABS, or Traction Control) illuminate for no reason.
- ✔ Diagnostic trouble codes (DTCs) related to lost communication, such as U0140, U0155, or other U-codes.
- ✔ Wipers or radio operate intermittently or not at all.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system capacitors to discharge before beginning work.
- ✔ Locate the BCM: On most listed models like the Cadillac CTS, the BCM is located on the left-hand (driver’s) side of the dashboard, often behind the lower dash panel or kick panel. For vans like the Express/Savana, it’s typically in the center dash area.
- ✔ Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Use a non-marring trim removal tool to avoid scratching your interior.
- ✔ Disconnect and Remove: 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 and remove it.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location and reconnect all electrical harnesses. Ensure they click securely into place. This 2014-2015 CTS BCM is designed for a perfect fit.
- ✔ Post-Installation Steps: Reconnect the negative battery terminal. Start the vehicle and check for proper function of all body electronics. Be aware that some vehicles may require additional relearn procedures as noted below.
Important Post-Installation Information
While this module comes pre-programmed, certain vehicle security and safety systems may require a handshake procedure after installation. This is a normal part of modern vehicle repair.
- Airbag System Sync: If the airbag light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be required to ensure correct brake light and stability control operation.
- No Core Charge: You can keep your old part! There is no core charge or need to send the original module back to us.
Verified Vehicle Compatibility List
This module, part number 22820314 (also fits 22915542), is a direct-fit replacement for the following vehicles. Please verify your specific model and options.
- Cadillac CTS: 2014 (SW); 2014-2015 (Cpe); 2014 (Sdn, VIN D V-Series)
- Chevrolet Impala: 2013 (ID 22820314 or 22915542); 2014-2016 (VIN W, Limited)
- Chevrolet Traverse: 2013-2017
- Chevrolet Captiva Sport: 2013-2015
- Chevrolet Express Van (1500/2500/3500): 2013-2018
- GMC Acadia: 2013-2016; 2017 (VIN J, Limited)
- GMC Savana Van (1500/2500/3500): 2013-2018
- Buick Enclave: 2013-2017
Frequently Asked Questions
Is this BCM truly plug-and-play?
Yes, it is! We program the module to your vehicle’s VIN before shipping, so it’s ready for installation without requiring a trip to the dealership for initial programming. However, as noted, some models may require minor relearn procedures for systems like airbags or brakes after installation.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your part without it.
Do I need to send my old BCM back?
No. This product comes with no core charge, so you can keep your original module. This saves you the time and expense of return shipping.
What tools are needed for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn procedures require a professional-grade bidirectional diagnostic scan tool. Many local repair shops can perform these services if needed.
Will this fix my car’s no-start problem?
If your no-start issue is caused by the BCM losing communication with the vehicle’s security or powertrain systems (often indicated by a flashing security light and U-codes), then replacing the BCM is the correct repair.