Restore Your Vehicle’s Brain without the Dealership Hassle
Is your Corvette, Sierra, or Escalade suffering from bizarre electrical issues? Flickering lights, malfunctioning windows, a dead instrument cluster, or a frustrating no-start condition can often be traced back to one component: the Body Control Module (BCM). As the central nervous system for your vehicle’s electronics, when the BCM fails, it can cause a cascade of confusing and costly problems. In my 20+ years in the shop, I’ve seen countless owners and technicians chase these electrical gremlins, only to find the BCM was the culprit all along.
Forget the expensive trip to the dealership and the days of downtime waiting for programming. We offer a simple, effective solution. This is a replacement BCM that arrives at your door fully programmed and ready for installation. We use the data from your original module to create a perfect clone, ensuring all your vehicle’s specific options and security information are retained. This process makes the replacement of your 2015 Corvette BCM as straightforward as possible, getting you back on the road quickly and affordably.
From the Diagnostic Bay: The Case of the Haunted Sierra
A customer brought in a 2015 Sierra 1500 with a list of complaints that sounded like the truck was possessed. The radio would change stations on its own, the dome light would stay on, and occasionally, the power locks would cycle while driving. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a storm of U-codes (communication loss) pointing to intermittent network issues. Instead of a complex wiring problem, experience told me to look at the BCM. We pulled the original module, sent it out for our cloning service, and installed the programmed replacement. The electrical chaos stopped instantly. It’s a classic example of how a failing BCM can mimic a dozen other problems, and why a correctly programmed replacement is the definitive fix.
Key Signs Your GM Body Control Module is Failing
- ✔ Unpredictable warning lights on the dashboard (Airbag, ABS, Service Engine).
- ✔ Power windows, door locks, or interior lights operating erratically or not at all.
- ✔ The security system preventing the vehicle from starting (anti-theft light flashing).
- ✔ Inconsistent or non-functional instrument cluster gauges.
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0100, U0140, or various B-codes.
- ✔ Rapid battery drain while the vehicle is off, caused by the BCM not entering ‘sleep’ mode.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate Your BCM: The location varies by model. For a 2015 Corvette BCM, it’s typically in the left-hand side of the dash. For trucks like the Silverado/Sierra, it’s often under the steering column. Always verify the location for your specific vehicle.
- ✔ Remove the Old Module: Carefully disconnect all electrical connectors. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the Programmed Module: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Perform Post-Install Checks: Start the vehicle and verify that all body functions (lights, locks, windows) are working correctly. Note the post-installation procedures below, as some relearns may be necessary.
Important Post-Installation Notes: While our programming service handles the critical security and vehicle-specific data, some systems may require a ‘handshake’ with the new BCM. If your airbag light is on, an “Airbag System Sync” (Setup SDM Primary Key) will be needed using a professional scan tool. Similarly, some models may require a “Brake Pedal Position Relearn” to ensure proper brake light and stability control function. Always consult a factory service manual for your specific vehicle’s requirements.
Will This Fit My Vehicle?
This BCM is a direct-fit replacement for numerous 2015-2018 GM vehicles. Please verify that your original part number is on this list: 13592137, 13506935, 13506936, 13587704, 13594764. It is confirmed to fit the following models:
- ATS (2015-2016)
- Corvette (2015)
- CTS (2015-2016)
- Escalade & Escalade ESV (2015)
- Impala (2015-2016)
- Sierra 1500, 2500, 3500 & Denali Models (2015)
- Silverado 1500, 2500, 3500 (2015)
- Sonic (2015-2018)
- Suburban 1500 (2015)
- Tahoe (2015)
- XTS (2015)
- Yukon & Yukon XL 1500 (2015)
Frequently Asked Questions
Frequently Asked Questions
How does the programming service work?
After you place your order, we will provide you with instructions to ship your original BCM to us. Once we receive it, we extract the vehicle-specific data and flash it onto the replacement module. We then ship the plug-and-play replacement back to you.
Do I need to send my original BCM?
Yes. This service requires your original module to clone the data. This ensures 100% compatibility with your vehicle’s options and security systems, avoiding the need for dealership programming.
Is this difficult to install for a DIYer?
The physical installation is straightforward for most DIY enthusiasts. It involves disconnecting the battery, locating the module, swapping the units, and reconnecting everything. The main benefit is that our programming service eliminates the complex computer-side of the job.
What tools are needed for the post-installation procedures?
If an Airbag Sync or Brake Pedal Relearn is required, you will need a professional-grade bidirectional scan tool. Most basic code readers cannot perform these functions. Many local independent shops can perform these relearns for you if needed.
Is there a core charge?
No, there is no core charge. You can keep your original, non-working module after you’ve sent it to us for the data cloning service.
How do I know if this part number is correct for my vehicle?
The best way is to physically check the part number on your original BCM. This module replaces part numbers 13594764, 13592137, 13506935, 13506936, and 13587704.