Restore Your Truck’s Functionality with a Hassle-Free BCM Solution
Are you battling bizarre electrical issues in your 2015 GMC Sierra or a similar GM vehicle? Flickering dashboard lights, power windows with a mind of their own, or a security system that randomly prevents your truck from starting are classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and seemingly unrelated problems. Dealerships often charge a fortune for a new module plus expensive programming fees. We offer a simpler, more affordable solution.
This is a replacement BCM that arrives at your doorstep fully programmed and ready for installation. Our process is straightforward: after your purchase, you’ll ship your original BCM to us. Our expert technicians will then clone all the essential data—including your vehicle’s specific VIN, options, and security information—onto this replacement module. The result is a true plug-and-play part that restores your vehicle’s factory operations without requiring a trip to the dealer for programming. It’s the most reliable way to get a fully functional 2015 Sierra BCM without the typical hassle.
Case Study: A Tricky Diagnosis
I remember a 2015 Silverado that came into the shop with a complaint of the radio turning off intermittently and the driver’s side power window only working occasionally. The owner had already replaced the window switch and the radio itself. Diagnostics showed no specific DTCs for those components, but there were several U-codes (Communication Codes) stored, like U0140 – Lost Communication With Body Control Module. In these GM trucks, the BCM acts as a gateway for dozens of systems. After confirming power and ground to the BCM were solid, we knew the module itself was failing internally. Swapping in one of our programmed units solved every single issue instantly. This is a prime example of how a single failing 2015 Sierra BCM can create multiple ghost-like problems.
Is Your Vehicle Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system light is flashing, and the engine won’t crank (anti-theft active).
- ✔ Dashboard warning lights (like ABS or Airbag) illuminating for no reason.
- ✔ Horn honking unexpectedly or not working.
- ✔ Stored diagnostic trouble codes (DTCs) such as U0140, U0155, or B1001.
- ✔ Inconsistent A/C and heater blower fan operation.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to ensure all capacitors are discharged.
- ✔ Locate the BCM: On most 2015 Sierra and Silverado models, the BCM is located under the steering column, to the left of the driver’s side dashboard. You may need to remove a lower dash panel for access.
- ✔ Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the exact same location. Firmly reconnect all electrical connectors, ensuring each one clicks securely into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and test all body functions: lights, windows, locks, radio, etc.
- ✔ Post-Install Checks: Start the vehicle. If an airbag light appears, a professional scan tool is needed for the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ may be required on some models to ensure proper brake light and stability control function.
Guaranteed Fitment for Your GM Vehicle
This BCM is a direct replacement for part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. It is confirmed to fit the following models. Please verify your vehicle and options below:
- ATS (2015-2016): On firewall
- Corvette (2015): LH dash
- CTS (2015-2016): LH dash
- Escalade / Escalade ESV (2015): Under steering column, w/ model year break point (opt AVF)
- Impala (2015-2016): New Style (VIN 1), LH dash, ID 13587704
- Sierra 1500 / Denali 1500 (2015): Under steering column
- Sierra 2500 / 3500 / Denali (2015): Under steering column or LH firewall, ID 13587704
- Silverado 1500 / 2500 / 3500 (2015): Under steering column
- Sonic (2015-2018): RH rear quarter panel
- Suburban 1500 (2015): Under steering column, w/ model year break point (opt AVF)
- Tahoe (2015): Under steering column, w/ model year break point (opt AVF)
- XTS (2015): Left front hinge pillar
- Yukon / Yukon XL 1500 (2015): Under steering column, w/ model year break point (opt AVF)
This service provides a reliable and tested 2015 Sierra BCM solution, ensuring compatibility and performance. Plus, with our no-core-charge policy, you can keep your original module. Order today to restore your vehicle’s electronics to perfect working order.
Frequently Asked Questions
Frequently Asked Questions
How does the mail-in programming service work?
It’s simple. After you place your order, we’ll contact you with instructions to ship your original BCM to our facility. Once we receive it, our technicians clone the data to the replacement unit and ship it back to you, typically within 1-2 business days. You’ll receive a tracking number once it’s on its way.
Is this guaranteed to fix my truck’s electrical problems?
This BCM will fix any issues directly caused by a faulty Body Control Module. If your vehicle’s symptoms match those listed (erratic lights, locks, windows, security issues, U-codes), there is a very high probability this is the solution. Proper diagnosis is always recommended.
How long does the entire process take?
The total time depends on shipping. Our in-house service is fast—we program and ship the replacement module within 24-48 hours of receiving your original. We recommend using a tracked, expedited shipping service to send us your module.
Do I need any special tools for installation?
For the physical swap, you’ll only need basic hand tools like a socket set or screwdriver to remove the lower dash panel and the module itself. No programming tools are required. However, in some cases, a post-install procedure like an airbag sync may require a professional-grade scan tool.
What if the airbag light comes on after I install it?
This can happen occasionally. It means the new BCM needs to be synced with the airbag system’s Supplemental Deployment Module (SDM). A repair shop with a capable scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this and turn off the light.
Is there a core charge for this part?
No, there is no core charge. We need your original module to perform the data cloning service, but you are welcome to have it shipped back to you with the programmed replacement if you wish.