Restore Full Functionality to Your GM Truck or SUV
As a technician with over two decades of experience, I’ve seen firsthand how a faulty Body Control Module (BCM) can turn a reliable truck into a source of constant frustration. Are you dealing with flickering lights, power windows that have a mind of their own, a security system that acts up, or a dashboard lit up with warning messages? These aren’t just annoyances; they’re classic signs of BCM failure. The BCM is the central nervous system for your vehicle’s body electronics, and when it fails, chaos ensues. This can lead to incorrect diagnoses and wasted money on parts you don’t need.
Forget the expensive trip to the dealership and the hassle of programming a new module from scratch. We offer a simple, reliable solution: a fully programmed replacement BCM. Our process is designed for both seasoned mechanics and DIY enthusiasts. You simply send us your original BCM, and we transfer all the critical vehicle-specific data—including VIN, mileage, and key information—to this replacement unit. The result is a true plug-and-play module that restores your vehicle’s functions without requiring any additional programming or dealer intervention. It’s the most efficient way to solve your electrical gremlins and get your truck back to perfect working order.
From the Diagnostic Bay: The Case of the Haunted Sierra
A 2015 Sierra 2500 came into the shop with a list of bizarre symptoms. The radio would turn on and off, the driver’s side power window wouldn’t work, and the horn would randomly honk when locking the doors. The owner had already replaced the window switch and checked fuses, with no luck. A quick scan showed a flurry of U-codes, most notably U0140 – Lost Communication With Body Control Module. This pointed directly to the BCM. Instead of a costly new unit and hours of programming, we used this exact cloning service. Once the programmed BCM was returned and installed, every single issue was resolved instantly. It’s a textbook example of how a targeted fix saves time, money, and headaches.
Is Your Truck Showing These BCM Failure Signs?
- ✔ Intermittent or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security system or keyless entry failing to work correctly.
- ✔ Warning lights on the dashboard, such as for the airbag or traction control system.
- ✔ Communication error codes, particularly U-codes like U0140, U0155, or U0164.
- ✔ Wipers or the horn activating unexpectedly.
- ✔ In some cases, a no-start condition where the BCM fails to recognize the key.
Your Straightforward BCM Installation Guide
Installing your pre-programmed BCM is a direct process. While the exact location varies slightly by model (see fitment list), it’s typically found under the steering column or on the driver’s side firewall/hinge pillar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most Silverado and Sierra models, you’ll need to remove the lower dash panel beneath the steering wheel to access the module.
- Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. They have locking tabs, so be gentle. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical harnesses.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions: lights, wipers, windows, locks, and radio to confirm the repair.
Important Post-Installation Note: In some cases, additional relearn procedures may be needed. If the airbag light is on, a professional scan tool is required for the ‘Setup SDM Primary Key in BCM’ procedure. A ‘Brake Pedal Position Relearn’ might also be necessary for proper brake light and stability control function. Always consult a factory service manual for model-specific details.
Verified Fitment For These GM Vehicles
This BCM is a direct, programmed replacement for units with part numbers 13592137, 13506935, 13506936, 13587704, or 13594764 on the following vehicles:
- ATS: 2015, 2016 (ID 13587704)
- Corvette: 2015
- CTS: 2015 (Sdn), 2016 (ID 13587704)
- Escalade / Escalade ESV: 2015
- Impala: 2015-2016 (New Style)
- Sierra 1500 / Denali 1500: 2015
- Sierra 2500 / Denali 2500: 2015 (ID 13587704)
- Sierra 3500 / Denali 3500: 2015 (ID 13587704)
- Silverado 1500 Pickup: 2015
- Silverado 2500 Pickup: 2015 (ID 13587704)
- Silverado 3500 Pickup: 2015 (ID 13587704)
- Sonic: 2015-2018
- Suburban 1500: 2015
- Tahoe: 2015
- XTS: 2015
- Yukon / Yukon XL 1500: 2015
Frequently Asked Questions
How does the mail-in programming service work?
After you purchase, we will contact you with simple instructions to ship your original BCM to us. Once we receive it, we transfer the data to the replacement unit and ship it back to you, typically within one business day. You’ll receive tracking information once it’s on its way back.
Is this really plug-and-play?
Yes. Because we clone the data from your original module, the replacement BCM is ready for installation right out of the box. It will recognize your vehicle’s VIN and keys, eliminating the need for expensive dealer programming.
What if my original BCM is completely dead or not communicating?
In many cases, we can still extract the necessary data even if the module is failing or has communication issues. Please contact us with your specific symptoms before ordering if you suspect a completely non-responsive module.
Do I need to return my old BCM after installation?
No. There is no core charge for this part. After we clone the data from your original module, we ship it back to you along with the programmed replacement. You can keep your old part.
Will this fix my specific electrical problem?
This BCM will correct issues directly caused by a failing module. The symptoms listed on this page are the most common indicators. If you’re unsure, it’s always best to have a qualified technician diagnose the vehicle to confirm the BCM is the root cause.
What tools are required for the Airbag or Brake relearn procedures?
These procedures require a professional-grade bidirectional scan tool, such as a GM Tech 2, MDI, or a high-end Snap-on or Autel scanner. Most local repair shops have this equipment if you are unable to perform the procedure yourself.