Is Your GM Vehicle Acting Possessed? It’s Likely a Failing BCM.
If you’re experiencing a frustrating array of electrical gremlins in your 2015 GMC Sierra, Chevy Silverado, or other compatible GM vehicle, the root cause is often a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, managing everything from your power windows and door locks to your interior lighting, security system, and even communication with other vital modules. When it starts to fail, the symptoms can be unpredictable and maddening, making your reliable truck feel anything but.
Common issues like flickering dashboard lights, windows that won’t operate, a security system that acts up, or a battery that drains overnight for no apparent reason all point towards a compromised BCM. Simply replacing the module with a new or used one from the dealer isn’t a simple fix. It requires expensive and complex programming to sync it with your vehicle’s specific VIN and security information. Our service bypasses this headache completely.
The Simple, Cost-Effective Solution: A Pre-Programmed 2015 Sierra BCM
This listing is for a replacement Body Control Module, part number 13587704, that is delivered to you ready for installation. We achieve this through a professional cloning service. You simply purchase this item, and we will contact you with instructions to ship your original BCM to our facility. Once we receive it, our technicians will extract the critical vehicle-specific data and flash it directly onto this replacement unit. We then ship the fully programmed module back to you. The result is a true plug-and-play component that restores your vehicle’s functionality without requiring any dealer intervention.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not working at all).
- ✔ The security system or keyless entry system malfunctioning.
- ✔ Unexplained parasitic battery drain leading to a dead battery.
- ✔ Dashboard warning lights appearing randomly.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers operating on their own or not responding to the switch.
Installation and Post-Install Considerations
Physically installing the BCM is typically straightforward, as it’s located under the steering column on most compatible trucks. Once the cloned module is installed, your vehicle should start and run with all previous functions restored. However, in some cases, minor recalibration procedures may be necessary:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This re-establishes communication between the new BCM and the airbag system.
- Brake Pedal Position Relearn: To ensure correct brake light operation and stability control performance, a brake pedal position sensor recalibration might be required.
Please note: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Part Number Compatibility
This module is a direct replacement for part number 13587704 and is also compatible with the following part numbers: 13592137, 13506935, 13506936, and 13594764. It fits a wide range of 2015 and newer GM vehicles. Please verify the part number on your original module or consult the detailed fitment list to ensure compatibility.
Frequently Asked Questions
How does this cloning service work?
It’s simple. After you place your order, we’ll provide instructions for you to ship your original BCM to us. Our technicians will then transfer all the essential programming, including VIN and key data, from your module to the replacement unit. We then ship the ready-to-install module back to you.
Will I need to do any programming myself?
No. The module you receive will be fully programmed with your vehicle’s data, making it a true plug-and-play solution. This eliminates the need for expensive dealership programming tools and labor.
What are the most common signs my BCM is bad?
The most common signs include erratic electrical functions like power windows/locks not working, interior lights flickering or staying on, a malfunctioning security system, and a persistent dead battery from a parasitic draw.
Where is the BCM located on a 2015 Sierra or Silverado?
On most 2015 GM trucks like the Sierra and Silverado, the Body Control Module is located under the driver’s side dashboard, near the steering column.
What if the airbag light comes on after I install it?
If the airbag light appears, it means the BCM needs to be synced with the airbag module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be performed by a repair shop with a professional-grade diagnostic tool.
Do I need to send back my old part after installation?
No core charge is required for this service. You only need to send us your original module for the data cloning process. You do not need to return it after receiving the replacement.