Fix Frustrating Electrical Problems in Your 2014 Cadillac CTS
If you’re dealing with bizarre electrical gremlins in your 2014 Cadillac CTS—like flickering lights, malfunctioning power windows, or a security system that has a mind of its own—you’re likely looking at a failing Body Control Module (BCM). As a technician with over two decades of experience, I can tell you that a faulty BCM is the central point of failure for dozens of seemingly unrelated electronic issues. It’s the vehicle’s nerve center for body functions, and when it goes, the symptoms can be maddening to diagnose.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional programming service for this BCM, which is a direct replacement for part numbers like 13580690 and 13594692. Instead of buying a blank module and paying a dealership hundreds for programming, you simply send us your original BCM. We transfer all the critical vehicle-specific data—like key information and security settings—to this replacement unit. When you get it back, it’s a true plug-and-play installation, getting you back on the road without the dealership headache.
Is Your Cadillac Exhibiting These BCM Failure Signs?
A failing BCM can manifest in numerous ways. In my shop, these are the most common complaints that point directly to a faulty module. If you’re experiencing several of these, it’s a strong indicator that your 2014 CTS BCM needs attention.
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security system or alarm randomly activating or preventing the car from starting.
- ✔ Wipers or radio turning on and off by themselves.
- ✔ False warning messages on the driver information center (DIC).
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, often U-codes (e.g., U0140, U0155).
- ✔ Key fobs not being recognized by the vehicle.
Case Study: A Tricky Diagnosis
A customer brought in a 2014 CTS with a truly baffling issue: the driver’s side headlight would stay on, draining the battery overnight, but the power locks wouldn’t work at all. There were no specific codes for the headlight or lock actuators. After checking the basics (fuses, relays, wiring), we hooked up a high-level scan tool. We noticed the BCM wasn’t correctly reading the status of the door lock switch or the headlight switch. It was sending power to the headlight relay constantly. This is a classic internal BCM failure. By providing a programmed 2014 CTS BCM, we solved both problems with one part, saving the customer from replacing multiple unnecessary components.
Your Straightforward Installation Guide
Our programming service makes the physical swap simple. For the 2014 Cadillac CTS, the BCM is typically located in the driver’s side of the dashboard. While exact steps can vary, here is a general guide:
- Safety First: Always 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 2014 CTS, you’ll find the BCM on the left-hand (driver’s) side of the dash. You may need to remove a lower dash panel or kick panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Power Up: Reconnect the negative battery terminal. Your vehicle’s core functions should now be restored.
Important Post-Installation Notes
Because we’ve cloned your original data, most functions will work immediately. However, some vehicle safety systems may require a quick sync:
- Airbag System Sync: If your airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional scan tool and ensures the new BCM and the airbag system are communicating correctly.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure perfect brake light and traction control operation.
Disclaimer: We always recommend consulting a factory service manual or a qualified technician for procedures specific to your vehicle.
Verified Fitment for Your Vehicle
This programming service and replacement BCM are compatible with a wide range of GM vehicles that use part numbers 13594692, 13594768, 13593214, 13580690, 13591519, or 13594769. Please verify the part number on your original module.
- ATS (2014)
- CAPRICE / SS CAPRICE (2014-2017)
- CORVETTE (2014)
- CTS (2014 – Sdn, VIN A)
- ESCALADE / ESCALADE ESV (2015)
- IMPALA (2015-2019)
- SIERRA 1500 / DENALI 1500 (2014)
- SIERRA 2500 / 3500 / DENALI (2015)
- SILVERADO 1500 (2014)
- SILVERADO 2500 / 3500 (2015)
- SUBURBAN 1500 (2015)
- TAHOE (2015)
- XTS (2014)
- YUKON / YUKON XL 1500 (2015)
Frequently Asked Questions
How does the programming service work?
After you place your order, we will contact you with instructions to ship your original BCM to us. Once we receive it, our technicians will extract the vehicle-specific data and flash it onto the replacement module. We then ship the plug-and-play replacement back to you, typically within 1-2 business days.
Do I need to send my keys?
No, you do not need to send your keys. All the necessary security information is stored within your original BCM, which is what we transfer to the new unit.
Is there a core charge or do I get my old part back?
There is absolutely no core charge for this service. We will ship your original, non-functional module back to you along with the newly programmed replacement. You can keep it or dispose of it as you see fit.
Will this fix my ‘Service Theft Deterrent System’ message?
In many cases, yes. The BCM is integral to the Pass-Key III+ and other GM anti-theft systems. If the BCM is failing, it can cause this message to appear and prevent the car from starting. Our service preserves your car’s security data, resolving these communication-based issues.
What if I need the Airbag or Brake Pedal relearn procedure?
These procedures are not always required but are sometimes necessary for safety system synchronization. Most independent repair shops with a modern, bi-directional scan tool (like an Autel or Snap-on) can perform these relearn functions in just a few minutes.