Restore Full Control and Eliminate Electrical Gremlins
As a technician with over two decades of experience, I’ve seen firsthand the frustration that a failing Body Control Module (BCM) can cause. Your 2015 GMC Sierra 2500 isn’t just a truck; it’s a complex machine, and the BCM is the central command for its body electronics. When it starts to fail, you’ll notice bizarre, maddening issues—flickering interior lights, power windows with a mind of their own, or a security system that randomly immobilizes your vehicle. These aren’t just annoyances; they’re signs that the electronic nerve center of your truck is compromised.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional cloning service for this BCM, compatible with part numbers like 13594692, 13591519, and 13594768. Simply send us your original module. We will transfer all the critical, vehicle-specific data—including VIN, mileage, and key programming—to this replacement unit. The result? A true plug-and-play module that restores full functionality without a trip to the dealership for expensive programming. You get your truck back to perfect working order, saving significant time and money.
A Technician’s Notebook: The Case of the Haunted Silverado
A customer brought in a 2015 Silverado 2500 with a list of symptoms that sounded like something out of a horror movie. The radio would change stations on its own, the dome light would flicker while driving, and twice, the truck refused to start, displaying a ‘Service Theft Deterrent System’ message. He had already replaced the battery and checked all the grounds. After hooking up my scan tool, I saw a slew of U-codes (communication errors) pointing to the BCM. Instead of a costly new module and hours of programming at the dealer, we opted for a cloned BCM. Once we received his original unit and transferred the data, the installation took less than 30 minutes. Every single ghost in his machine was gone. It’s a prime example of how the right part, correctly programmed, is the most efficient fix.
Is Your GM Vehicle Showing These BCM Failure Signs?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution your vehicle needs. Look out for:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Flickering or inoperative interior and exterior lights.
- ✔ The security or anti-theft system light is on, or the vehicle won’t start.
- ✔ The horn honks unexpectedly or doesn’t work at all.
- ✔ Multiple, unrelated warning lights on the dashboard.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ Wipers turning on by themselves or not working when commanded.
Your Straightforward BCM Installation Guide
Installing your pre-programmed BCM is a manageable task for a confident DIYer or any professional mechanic. The goal is to get you back on the road quickly and safely.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most GM trucks and SUVs like the Sierra and Tahoe, the BCM is located under the driver’s side of the dashboard, often near the steering column. On other models like the CTS or XTS, it may be in the left-hand dash or hinge pillar area.
- Remove Trim Panels: You may need to remove a lower dash panel or kick panel to gain clear access to the module. These are typically held by clips or a few screws.
- Disconnect and Remove: Carefully unplug the 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 and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- Reassemble and Reconnect: Reinstall any trim panels you removed. Finally, reconnect the negative battery terminal.
- Post-Installation Checks: Start the vehicle and test all related functions: lights, locks, windows, wipers, etc. Note that some vehicles may require a ‘Brake Pedal Position Relearn’ or an ‘Airbag System Sync’ with a diagnostic tool if specific warning lights appear, as detailed in our post-install procedures.
Verified Fitment Across a Wide Range of GM Models
This BCM cloning service is compatible with a broad selection of General Motors vehicles. Please verify your part number and model from the list below. This unit is a direct replacement for part numbers 13594692, 13594768, 13593214, 13580690, 13591519, and 13594769.
- Cadillac: ATS (2014), CTS (2014), Escalade/ESV (2015), XTS (2014)
- Chevrolet: Caprice/SS Caprice (2014-17), Corvette (2014), Impala (2015-19), Silverado 1500 (2014), Silverado 2500/3500 (2015), Suburban 1500 (2015), Tahoe (2015)
- GMC: Sierra 1500 (2014), Sierra 2500/3500 (2015), Sierra Denali 1500 (2014), Sierra Denali 2500/3500 (2015), Yukon/Yukon XL 1500 (2015)
Note: Some models require matching the ID ‘13594692‘ on the original part. Please check your module before ordering.
Frequently Asked Questions
How does the programming/cloning service work?
After you place your order, we will contact you with instructions for shipping your original BCM to our facility. Once we receive it, our technicians will extract the unique data and transfer it to the replacement module. We then ship the plug-and-play BCM back to you, typically within 1-2 business days.
Do I need to send my keys with the BCM?
No, you do not need to send your keys. Because we are cloning the data from your original module, the replacement unit will already be programmed to recognize your existing keys.
Is there a core charge for my old BCM?
No, there is no core charge. We require your original BCM to perform the cloning service, but you are not charged a separate fee for it. We will not be returning the original BCM.
What if the airbag light comes on after installation?
In some cases, the new BCM may need to be synced with the airbag system. This is a simple procedure called ‘Setup SDM Primary Key in BCM’ that can be performed by a professional shop with a capable diagnostic scan tool. It is only necessary if the airbag light is illuminated after installation.
Will I need any other special procedures after installing?
Depending on your specific model, a Brake Pedal Position Relearn might be needed to ensure proper brake light and stability control function. This is a standard procedure that can be done with a bi-directional scan tool. Always consult a service manual for vehicle-specific requirements.
What if I can’t find my exact part number in the list?
Please contact us with your vehicle’s VIN and the part number from your original BCM. We can verify compatibility and ensure you receive the correct, hassle-free solution for your vehicle.