Restore Your Truck’s Functionality with a Hassle-Free BCM Solution
Are you dealing with bizarre electrical issues in your 2015 GMC Sierra or other compatible GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or even a no-start condition can often be traced back to a failing Body Control Module (BCM). It’s the electronic nerve center for your vehicle’s comfort and convenience features, and when it goes bad, it can be incredibly frustrating. Many owners are told the only fix is an expensive trip to the dealership for a new module followed by costly programming fees. We offer a smarter, more affordable solution.
This is a fully tested replacement BCM that comes pre-programmed with your vehicle’s exact data. Our professional cloning service transfers all the critical information from your original BCM to this replacement unit. The result? A true plug-and-play module that eliminates the need for dealership intervention. Simply send us your original module, and we’ll handle the complex programming, shipping you back a unit that’s ready for installation right out of the box. It’s the most efficient way to get your truck back to 100%.
From the Diagnostic Bay: The Case of the Haunted Sierra
A customer brought in his 2015 Sierra 1500 with a list of complaints that sounded like a poltergeist had moved in. The dome lights would randomly turn on while driving, the radio would shut off, and the driver’s side window wouldn’t go down. He’d already replaced the battery and checked fuses with no luck. The dealership quoted him over $1,200 for a new BCM and the labor to program it. After a quick scan, we confirmed communication errors with the BCM. Instead of the dealership route, we used our cloning service. We had his original BCM overnighted to us, programmed the replacement unit the day it arrived, and shipped it back. He installed it himself in under 30 minutes. Total cost was a fraction of the dealer quote, and his truck was back to normal without the electrical ghosts.
Is Your Vehicle Showing These Symptoms?
- ✔️ Erratic or non-functional interior/exterior lights.
- ✔️ Power windows, locks, or mirrors not working correctly.
- ✔️ Intermittent starting problems or a complete no-start condition.
- ✔️ The security or anti-theft system light is on or flashing.
- ✔️ Inaccurate gauge readings on the instrument cluster.
- ✔️ Diagnostic Trouble Codes (DTCs) related to network communication, such as U0140, U0155, or other U-codes.
- ✔️ Horn or windshield wipers activating on their own.
Your Straightforward Installation Guide
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the systems to discharge.
- ✔ Locate the BCM: On most 2015 Sierra and Silverado models, the BCM is located under the steering column, behind the lower dash panel. For other models, its location may vary (e.g., LH dash, firewall), so confirm with a service manual if unsure.
- ✔ Access the Module: You may need to remove a lower dash panel or kick panel to gain clear access to the BCM.
- ✔ Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be pressed. Once disconnected, remove any bolts or clips securing the module and take it out.
- ✔ Install the New BCM: Mount your pre-programmed replacement BCM in the same location and secure it with the original hardware.
- ✔ Reconnect Everything: Plug all electrical connectors firmly into the new module. You should hear a click as they lock into place.
- ✔ Power Up: Reconnect the negative battery terminal.
- ✔ Test All Functions: Start the vehicle and test your lights, windows, locks, radio, and other body functions to ensure everything is working as it should.
Important Post-Installation Information
While our programming service makes this a plug-and-play repair, some vehicle systems may require a recalibration after the BCM is replaced. This is normal and depends on your vehicle’s specific configuration. Please be aware of the following:
- Airbag System Sync: If the airbag (SRS) warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary for proper brake light and traction control operation.
- No Core Charge: You are not required to return your old BCM to us after the service. Keep your original module.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or consult with a qualified automotive technician for procedures specific to your make and model.
Verified Vehicle Compatibility
This BCM is a direct-fit replacement for part number 13587704 and is also compatible with part numbers 13592137, 13506935, 13506936, and 13594764. It is confirmed to fit the following vehicles:
- ATS: 2015, 2016
- Corvette: 2015
- CTS: 2015, 2016
- Escalade / Escalade ESV: 2015
- Impala: 2015-2016 (New Style)
- Sierra 1500 / Denali 1500: 2015
- Sierra 2500 / Denali 2500: 2015
- Sierra 3500 / Denali 3500: 2015
- Silverado 1500: 2015
- Silverado 2500: 2015
- Silverado 3500: 2015
- 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?
It’s simple. After you purchase, we will contact you with instructions to ship your original BCM to our facility. Once we receive it, our technicians will transfer the necessary programming and security data to the replacement module. We then ship the plug-and-play replacement back to you, typically within one business day.
Do I need to get new keys made?
No. Because we clone the data from your original module, the replacement BCM will recognize your existing keys. This is a major benefit that saves you the time and expense of having keys reprogrammed at a dealership.
Is this a guaranteed fix for my vehicle’s problems?
This BCM will fix any issues directly caused by a faulty Body Control Module. While the symptoms listed are common for BCM failure, it’s crucial to have your vehicle properly diagnosed by a professional to rule out other potential causes, such as wiring problems or faulty sensors.
What tools do I need for the installation?
For most installations, you’ll only need basic hand tools like a socket set and a trim removal tool to access the BCM. No special electronic equipment is needed for the installation itself, as the programming is already done.
What if the airbag light comes on after I install it?
This can happen on some models. It means the new BCM needs to be electronically introduced to the airbag module (SDM). A repair shop with a professional bidirectional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.