Is Your GM Truck or SUV Plagued by Bizarre Electrical Issues?
Are you dealing with flickering lights, power windows that have a mind of their own, a security system that won’t disarm, or a battery that drains overnight for no apparent reason? These frustrating and seemingly unrelated electrical gremlins often point to one central culprit: a failing Body Control Module (BCM). The BCM is the electronic nerve center of your vehicle, managing everything from your interior lights and power locks to your instrument cluster and security system. When it starts to fail, it can create a cascade of confusing and costly problems.
The Dealership Dilemma vs. The Plug-and-Play Solution
Traditionally, replacing a BCM meant a trip to the dealership for a new, expensive module, followed by several hours of labor for installation and vehicle-specific programming. This process is not only costly but also time-consuming. We offer a smarter, more efficient solution. This listing is for a replacement BCM that is professionally programmed using the data from your vehicle’s original module. This cloning service makes the replacement process as simple as swapping the part. No additional programming, no security relearn procedures, and no trip to the dealer is required. It’s the direct fix you need to get your vehicle back to 100% functionality.
From the Diagnostic Bay
We had a 2015 Sierra 1500 come into the shop with a classic case of BCM failure. The customer complained that his radio would randomly turn off, the dome lights would stay on, and he’d occasionally get a ‘Service 4WD’ message, even though the 4WD system was mechanically fine. He had already replaced the battery twice, assuming it was a power issue. After connecting our diagnostic scanner, we saw multiple communication error codes across various systems, all pointing back to the BCM. Instead of a costly dealer replacement, we performed a cloning service just like this one. Once the programmed module was installed, all the ghost-in-the-machine issues vanished instantly. It’s a testament to how a single component can cause widespread chaos, and how the right solution can provide a simple, complete fix.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, locks, or mirrors.
- ✔ Instrument cluster gauges behaving erratically or not working at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ Vehicle’s security system engaging randomly or preventing the engine from starting.
- ✔ Unexplained parasitic battery drain that kills your battery overnight.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ False warning lights on the dashboard (e.g., Airbag, ABS, Traction Control).
Why Our Programmed 2015 Sierra BCM Service is Your Best Choice
Our mail-in programming service is designed for simplicity and reliability. You purchase the BCM, and we will contact you with instructions to ship your original module to our facility. Our technicians will then extract the critical vehicle-specific data and flash it onto the replacement unit. This ensures that the new BCM is a perfect electronic match for your truck, retaining all original features and key programming. We then ship the ready-to-install module back to you. This process for your 2015 Sierra BCM eliminates the need for expensive dealer-specific tools and software, saving you hundreds of dollars and significant downtime.
Post-Installation Considerations
While our goal is a 100% plug-and-play experience, certain vehicle systems may require a simple sync procedure after installation. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure may be necessary. This is a simple task for any shop with a professional-grade diagnostic tool and syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure correct brake light operation and traction control performance.
Always consult a factory service manual or a qualified technician for vehicle-specific guidance.
This BCM is a direct fit for a wide range of GM vehicles and is interchangeable with the following part numbers: 13592137, 13506935, 13506936, 13587704, and 13594764. Please verify your part number and check the fitment list to ensure compatibility with your vehicle. Restore order to your vehicle’s electronics today with this reliable, pre-programmed 2015 Sierra BCM solution.
Frequently Asked Questions
Why do I need to send you my original BCM?
Your original BCM contains vital, vehicle-specific information, including the VIN, security key data, and option configurations. By transferring this data to the replacement module (a process called ‘cloning’), we make the new BCM a perfect electronic duplicate. This ensures a true plug-and-play installation without any need for expensive dealership programming.
How long does the programming service take?
We pride ourselves on a fast turnaround. Once we receive your original module, the programming and testing process is typically completed within 1-2 business days. We then ship the replacement module back to you, and you will receive tracking information at that time.
Is the BCM difficult to install?
On most GM trucks and SUVs like the Sierra, Silverado, and Tahoe, the BCM is located under the steering column on the driver’s side. It is typically held in by a few bolts or clips and has several electrical connectors. Installation is a straightforward process for anyone with basic mechanical skills. However, we always recommend consulting a service manual or having a qualified technician perform the installation.
What if the airbag light comes on after I install it?
This is a known possibility. If the airbag light illuminates, it simply means the airbag system (SDM) needs to be electronically re-synced with the new BCM. A repair shop with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Will this BCM fix my specific problem?
This BCM will correct issues directly caused by a faulty Body Control Module. The symptoms listed above are strong indicators of BCM failure. However, we always recommend proper vehicle diagnostics to confirm the BCM is the root cause of your problem before ordering.