Restore Your Vehicle’s Functionality and Peace of Mind
Are you battling strange and frustrating electrical issues in your Cadillac or GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts on its own, or an instrument cluster that’s gone dark 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 reliable ride into a source of daily headaches. This isn’t just an inconvenience; it can affect vehicle security and safety. I’ve seen it countless times in my 20+ years in the shop—a simple BCM failure causing a cascade of problems that seem unrelated, leaving owners and even some technicians scratching their heads.
Our service provides a simple, effective, and permanent solution. We supply a replacement BCM programmed with your vehicle’s exact data. By cloning the information from your original module, we deliver a true plug-and-play component. This means you can bypass the expensive and time-consuming trip to the dealership for programming. Simply send us your original BCM, and we’ll handle the complex data transfer. We’ll then ship your ready-to-install module back to you, getting you back on the road quickly and affordably.
Case Study: A Tricky Diagnosis
A customer brought in a 2015 Sierra 1500 with a complaint that was all over the map. The radio would randomly shut off, the dome light wouldn’t work, and occasionally the truck wouldn’t start, with no crank and just a click. They had already replaced the battery and checked the alternator. The scan tool was showing a slew of ‘U’ codes, indicating a loss of communication between various modules. This is a tell-tale sign. Instead of chasing individual components, we went straight to the network’s traffic controller: the BCM. After connecting our scope, we saw a noisy data line originating from the BCM itself. By providing a pre-programmed BCM using their original’s data, we restored stable communication and resolved all the seemingly separate issues in one go. This is the power of a proper BCM fix.
Common Signs of a Failing BCM
- ✔ Intermittent or non-functional power windows, locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not working at all).
- ✔ The vehicle’s security system or alarm is falsely triggered or won’t arm/disarm.
- ✔ Instrument panel warning lights appearing randomly, such as for the airbag or ABS system.
- ✔ Communication Diagnostic Trouble Codes (DTCs) like U0140, U0155, or other ‘U’ codes stored in the system.
- ✔ A no-start or no-crank condition where the vehicle’s electronics seem dead.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the BCM: On the 2015 Cadillac XTS, the BCM is typically found inside the cabin, at the left front hinge pillar. For other models, its location can vary (e.g., under the steering column or on the firewall). Consult a service manual if you’re unsure.
- ✔ Remove the Original Module: Carefully unplug the electrical connectors. Most have a locking tab that needs to be depressed or lifted. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Seat your newly programmed BCM into the mounting bracket and securely plug in all electrical connectors. Ensure they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the ignition to the ‘On’ position and test all body functions—lights, windows, locks, etc.—to confirm the repair is successful.
Important Post-Installation Information
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed using a professional-grade scan tool. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light operation and traction control functionality.
Disclaimer: Specific requirements can vary by vehicle make and model. Always refer to a factory service manual or consult a qualified technician for guidance.
Will This Fit My Vehicle?
This BCM is a direct-fit replacement for the following part numbers: 13592137, 13506935, 13506936, 13587704, 13594764. It is compatible with a wide range of 2015-2018 GM vehicles, including:
- Cadillac: 2015 XTS, 2015-2016 ATS, 2015-2016 CTS, 2015 Escalade, 2015 Escalade ESV
- Chevrolet: 2015 Corvette, 2015-2016 Impala (New Style), 2015 Silverado 1500/2500/3500, 2015 Suburban 1500, 2015-2018 Sonic, 2015 Tahoe
- GMC: 2015 Sierra 1500/2500/3500, 2015 Sierra Denali 1500/2500/3500, 2015 Yukon, 2015 Yukon XL 1500
Please verify your part number and vehicle model to ensure proper fitment.
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, we extract the vehicle-specific data and program it onto the replacement module. We then ship the ready-to-install BCM back to you.
Do I need to send my original BCM?
Yes. This service requires your original module to clone the essential data, including VIN, security information, and specific options for your vehicle. This ensures a seamless, plug-and-play installation without needing a dealer.
Is there a core charge?
No, there is no core charge for this service. You can keep your original module after we have completed the programming.
Will I need a special tool to install this?
For the physical installation, only basic hand tools are typically required. However, as noted, in some cases a professional scan tool may be needed for post-installation procedures like an airbag system sync if a warning light appears.
How long does the whole process take?
We typically program and ship the replacement module within 1-2 business days of receiving your original BCM. The total turnaround time will depend on shipping times to and from our facility.