Restore Full Electrical Control to Your Cadillac CTS
Is your 2014-2015 Cadillac CTS experiencing bizarre electrical issues that defy simple explanation? From flickering lights and malfunctioning power windows to a car that refuses to start, a failing Body Control Module (BCM) is often the hidden culprit. As the central command center for your vehicle’s body electronics, its failure can create a cascade of frustrating problems. This replacement BCM, part number 22915542, is the definitive solution to restore order and reliability. We take the guesswork out of the repair by programming the module to your specific Vehicle Identification Number (VIN) before it even leaves our facility. This ensures seamless communication with your car’s other systems, just like the original.
A Technician’s Notebook: The Case of the Haunted CTS
I had a 2014 CTS V-Series in the bay last month that was driving its owner crazy. The radio would switch off randomly, the security light would flash while driving, and occasionally the turn signals wouldn’t work. The owner had already replaced the battery and checked all the fuses. Diagnostics showed a handful of intermittent U-codes (communication loss) with no clear pattern. After spending an hour tracing networks with a scope, I saw inconsistent voltage signals originating from the BCM. It was slowly failing internally, corrupting data packets and causing chaos. Replacing the BCM with a VIN-programmed unit like this one resolved every single issue instantly. These symptoms are classic signs of a failing 2014-2015 CTS BCM.
Common Signs of a Failing BCM
A faulty Body Control Module can manifest in numerous ways. If your vehicle is showing any of these symptoms, a failing BCM is a likely cause. Look out for communication-related Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or other ‘U’ codes.
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, locks, or mirrors working intermittently or not at all.
- ✔ The vehicle’s security system engaging randomly or preventing the car from starting.
- ✔ Instrument cluster gauges behaving erratically or going dead.
- ✔ Remote keyless entry (RKE) failure.
- ✔ A persistent “Service Electrical System” message on the driver information center.
- ✔ Complete no-start condition where the starter does not engage.
Your Direct-Fit Installation Guide
Installing your new BCM is a straightforward process for a seasoned DIYer or any professional technician. This 2014-2015 CTS BCM is designed for a direct fit, but always prioritize safety.
- 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: On the Cadillac CTS, the BCM is typically located on the left-hand (driver’s) side of the dashboard, often behind the lower dash panel.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Keep track of all screws and clips.
- 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.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect and Test: Reattach the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, windows, locks, etc.—to confirm the repair.
Post-Installation Procedures: What to Expect
Because this module is pre-programmed, most vehicles will be ready to go immediately. However, in some cases, your vehicle may require one or two final synchronization steps. If your airbag light is on, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system. Additionally, some models may require a Brake Pedal Position sensor relearn to ensure perfect operation of the brake lights and stability control systems. Always consult a factory service manual for model-specific requirements.
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 part number and vehicle options to ensure compatibility.
- ✔ Cadillac CTS: 2014 (SW, V-Series Sedan), 2014-2015 (Coupe)
- ✔ Chevrolet Impala: 2013 (ID 22915542, 22820314), 2014-2016 (Limited)
- ✔ Chevrolet Traverse: 2013-2017
- ✔ Chevrolet Captiva Sport: 2013-2015
- ✔ Chevrolet Express Van (1500/2500/3500): 2013-2018
- ✔ GMC Acadia: 2013-2016, 2017 (Limited)
- ✔ GMC Savana Van (1500/2500/3500): 2013-2018
- ✔ Buick Enclave: 2013-2017
Frequently Asked Questions
Do I need to send you my old BCM?
No. This purchase comes with no core charge. You can keep your original module, which can be helpful for reference if needed.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions to reply with your 17-digit VIN. We cannot ship the module until we receive your VIN, as the programming is essential for it to work in your vehicle.
Is this a plug-and-play part?
Yes, for the vast majority of vehicles. Because we program it to your VIN, it eliminates the need for a trip to the dealership for programming. In some rare cases, minor relearn procedures like for the airbag or brake pedal sensor may be required as detailed above.
Will this fix my specific problem?
This module will correct any issue directly caused by a faulty BCM. While the symptoms listed are very common for a failing 2014-2015 CTS BCM, we always recommend a proper diagnosis by a qualified mechanic to confirm the BCM is the root cause before ordering.
What tools are needed for the post-installation procedures?
The ‘Setup SDM Primary Key’ for the airbag system requires a professional-grade bidirectional scan tool (like a GM Tech 2, MDI, or equivalent high-end scanner). The brake pedal relearn can often be done with similar tools.