Restore Full Electrical Function to Your Cadillac
Are you dealing with baffling electrical issues in your Cadillac or GM vehicle? Flickering lights, unresponsive power windows and locks, or a security system that acts up on its own are classic signs of a failing Body Control Module (BCM). As the central hub for your car’s body electronics, a faulty BCM can turn your driving experience into a frustrating guessing game. This isn’t just an inconvenience; it can affect vehicle security and safety systems. We offer a straightforward, reliable solution that gets you back on the road without the dealership hassle and expense.
This is a comprehensive mail-in programming service for your 2013 XTS BCM. You simply send us your original module, and we transfer all the critical vehicle-specific data to a replacement unit. The BCM we send back to you is a true plug-and-play component, programmed to match your vehicle’s exact configuration. This process preserves your key programming and other vital settings, making the installation process as simple as swapping the part.
Case Study: A Tricky Diagnosis
A few months back, a 2013 Cadillac XTS was brought into the shop with a list of strange symptoms. The owner reported that the interior lights would sometimes stay on, the radio would randomly shut off, and the key fob worked intermittently. Initial scans showed a dozen communication codes (U-codes), pointing to a network issue. After checking the main CAN bus wiring and grounds, everything looked solid. From experience, I know that when multiple, unrelated body systems fail at once, the BCM is the prime suspect. It’s the traffic cop for all those circuits. We tested the power and ground feeds to the BCM, which were perfect. The culprit was internal failure within the module itself. A replacement 2013 XTS BCM, cloned from the original, solved every single issue in one shot.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The anti-theft or security system light is on or flashing.
- ✔ The key fob is not recognized, or remote functions fail.
- ✔ Instrument cluster warnings appear randomly.
- ✔ Communication Diagnostic Trouble Codes (DTCs) like U0140, U0155, or other U-codes are present.
- ✔ In severe cases, a no-start condition where the vehicle will not crank.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Locate the BCM: On the 2013 Cadillac XTS, the BCM is typically found inside the cabin, attached to the left front hinge pillar area. Consult a service manual for the exact location on other compatible models.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the module. Press the release tabs firmly to avoid damaging them. Once disconnected, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Mount the replacement BCM you received from us in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Test Functionality: Start the vehicle and test all body functions—lights, locks, windows, radio, etc.—to confirm the repair. Address any post-installation procedures if necessary.
Important Post-Installation Information
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a recalibration. Please note the following:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed. This requires a professional-grade diagnostic tool to sync the airbag system with the new BCM and clear the light.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to prevent issues with the traction control system.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM programming service is guaranteed to work with modules bearing part numbers 13586589, 13589093, or 13580689. It is compatible with the following vehicles and options:
- 2013 Cadillac ATS: Body Control (BCM); (located on firewall)
- 2013 Cadillac XTS: Body Control (BCM); (located on left front hinge pillar)
- 2013-2014 Chevrolet Sonic: Body Control (BCM); (located in RH rear quarter panel)
- 2014 Chevrolet Impala: Body Control (BCM); VIN 1 (4th digit, New Style), (located in LH dash)
Frequently Asked Questions
How does the mail-in cloning service work?
After you purchase, we will provide you with shipping instructions. You send us your original BCM. We then copy the essential vehicle data from your module to the replacement unit and ship it back to you, typically within 24-48 hours of receiving it.
Do I need to program this BCM after I receive it?
No. The module arrives pre-programmed with your car’s data. This eliminates the need for expensive dealer programming. Installation is a direct swap, though some minor relearn procedures may be needed as noted above.
What if my airbag light comes on after installation?
This indicates the BCM and the airbag system (SDM) need to be electronically re-synced. A professional technician with a capable scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Is there a core charge for my old part?
No, there is no core charge. We only need your original module for the data transfer service. You can keep your original module after the service is complete.
Why is this a better solution than a used BCM from a scrapyard?
A used BCM from another vehicle is programmed for that specific car’s VIN and options. It will not work correctly in your vehicle without being reprogrammed, which our service handles for you, ensuring a perfect match and proper function.