Restore Your Truck’s Brain and End Electrical Chaos
Are you tired of playing whack-a-mole with your 2015 Sierra 1500’s electronics? One day the power windows don’t work, the next the radio is possessed, and the dash is lit up with random warning lights. As a technician with over two decades of experience, I’ve seen these exact issues hundreds of times. The culprit is almost always a failing Body Control Module (BCM)—the central nervous system of your vehicle’s body electronics. A faulty BCM can turn a reliable truck into a source of daily frustration. This isn’t just an inconvenience; it can affect vehicle security and safety systems.
We offer a straightforward, reliable solution. This is a fully tested Body Control Module, part number 13594764, that comes programmed specifically for your vehicle. We handle the complex part by cloning the data from your original BCM directly onto this replacement unit. The result? A module that is truly plug-and-play, eliminating the need for an expensive trip to the dealership for programming. You get a cost-effective, dependable fix that gets you back in control of your truck.
Case Study: A Technician’s Notebook
I recently had a 2015 Sierra 1500 in the bay that was a diagnostic nightmare for another shop. The owner reported intermittent no-starts, wipers that would turn on by themselves, and a security light that wouldn’t go off. They had already replaced the battery and checked all the grounds. After connecting my scanner, I saw a slew of U-codes (communication errors) pointing to the BCM. Instead of a costly new module and hours of programming, we used a cloned unit like this one. The customer shipped us their original BCM, we transferred the data, and sent the replacement back. The install took the owner less than 30 minutes. All the bizarre electrical gremlins were gone instantly. It’s a testament to how effective this solution is for a complex problem.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Intermittent or non-functional power windows, locks, or mirrors.
- ✔ Erratic interior or exterior lighting (flickering, staying on, or not working at all).
- ✔ Malfunctioning instrument cluster gauges or warning lights (including security or airbag lights).
- ✔ Wipers or radio turning on and off unexpectedly.
- ✔ Key fob not being recognized or remote start failure.
- ✔ Communication error codes (U-codes) stored in the system.
- ✔ A no-start condition where the engine cranks but won’t fire due to security system issues.
A Straightforward Guide to Installation
Installing your pre-programmed BCM is a simple process that most DIYers can handle. For the 2015 Sierra 1500, the BCM is typically located under the steering column.
- Safety First: Always disconnect the negative terminal from your truck’s battery before starting any electrical work.
- Locate the BCM: On most compatible trucks and SUVs, you’ll find the BCM mounted under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to 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 same location and securely reconnect all the electrical connectors. Ensure they click into place.
- Power Up: Reconnect the negative battery terminal.
- Final Checks: Start the vehicle and test all body functions: windows, locks, lights, wipers, and radio to confirm the repair was successful.
Important Post-Installation Note: In some cases, additional steps may be required. If your airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary for proper brake light and traction control operation. Always consult a factory service manual or a qualified technician if you are unsure.
Verified Vehicle Compatibility
This BCM is a direct-fit replacement for several GM models and part numbers. Please match your part number to ensure compatibility. This module replaces part numbers 13592137, 13506935, 13506936, 13587704, and 13594764.
It is confirmed to fit the following vehicles:
- 2015-2016 ATS
- 2015-2016 CTS
- 2015 Corvette
- 2015 Escalade & Escalade ESV
- 2015-2016 Impala (New Style)
- 2015-2018 Sonic
- 2015 Silverado 1500 / 2500 / 3500
- 2015 Sierra 1500 / 2500 / 3500
- 2015 Sierra Denali 1500 / 2500 / 3500
- 2015 Suburban 1500
- 2015 Tahoe
- 2015 XTS
- 2015 Yukon & Yukon XL 1500
Frequently Asked Questions
How exactly does the programming service work?
It’s simple. After you purchase, we will contact you with instructions to ship your original BCM to us. Once we receive it, our technicians will extract the unique vehicle data and transfer it to the replacement module. We then ship the ready-to-install BCM back to you.
Do I need any special tools to install this?
No special programming tools are required. The installation itself typically only requires basic hand tools to access and remove the module. The programming is already done for you.
Where is the BCM located on my 2015 Sierra 1500?
On the 2015 GMC Sierra 1500, the Body Control Module is located under the driver’s side dashboard, near the steering column. Removing the lower dash trim panel will provide access.
What if the airbag light comes on after I install it?
This can happen occasionally. It means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be done by a repair shop with a professional-grade diagnostic tool.
Is there a core charge for this part?
No, there is no core charge. We need your original module to perform the cloning service, but you are not required to leave it with us. However, most customers find it easiest to let us handle its disposal.
Will this fix my truck’s no-start problem?
If the no-start is caused by the BCM’s control over the vehicle’s anti-theft or security system, then yes, this programmed module will resolve the issue by restoring proper communication.