If your 2015 Chevy Tahoe or other compatible GM vehicle is plagued by baffling electrical issues, a failing Body Control Module (BCM) is the likely culprit. As the central nervous system for your vehicle’s electronics, a faulty BCM can cause a cascade of problems that seem unrelated, from flickering lights and malfunctioning power windows to a frustrating no-start condition. This isn’t just an inconvenience; it can be a major disruption to your daily life. We offer a reliable, straightforward solution: a replacement BCM, professionally programmed with your vehicle’s original data.
What Are the Telltale Signs of a Failing BCM?
In my 20+ years of diagnostics, I’ve seen how a bad BCM can make a vehicle seem possessed. The symptoms are often intermittent and confusing. If you’re experiencing any of the following, your BCM is the prime suspect.
- ✔️ Power windows, door locks, or interior lights operating erratically or not at all.
- ✔️ The security or anti-theft light stays on, preventing the engine from starting.
- ✔️ Dashboard warning lights (like ABS, Airbag, or Traction Control) illuminate for no reason.
- ✔️ The radio or infotainment system behaves strangely or won’t turn on.
- ✔️ Communication-related Diagnostic Trouble Codes (DTCs), such as U0100, U0140, or other ‘U’ codes, are stored in the system.
- ✔️ The horn sounds randomly or the key fob stops working correctly.
A Technician’s Notebook: The Case of the Intermittent Suburban
A customer brought in a 2015 Suburban—a vehicle that shares its platform with the Tahoe—with a complaint that drove them crazy. Randomly, the power locks would cycle, the radio would shut off, and once, it left them stranded. Their previous mechanic had replaced the battery and checked the alternator, but the gremlins persisted. After hooking up my scan tool, I saw a flurry of communication loss codes with the BCM. Instead of just selling them a new, blank module that would require an expensive trip to the dealer for programming, we performed a cloning service just like this one. By transferring the original, vehicle-specific data to a quality replacement unit, we provided a permanent, plug-and-play fix that got them back on the road with confidence. This is the most effective way to solve these complex electronic issues.
How Our Simple Mail-In Programming Service Works
Forget about towing your vehicle to a dealership and paying high programming fees. Our service is designed to be simple and cost-effective. After you purchase, we’ll contact you with instructions to ship your original BCM to our facility. Once we receive it, our expert technicians will clone all the critical data—including VIN, mileage, and key information—onto this replacement module. We then ship the programmed module back to you, ready for installation. It’s a true plug-and-play solution that preserves your vehicle’s original configuration.
Your Straightforward BCM Installation Guide
Installing your newly programmed 2015 Tahoe BCM is a manageable job for a DIYer or a quick task for any professional mechanic. On most Tahoes, Suburbans, and GM trucks, the BCM is located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- Locate the Original BCM: Remove any necessary lower dash panels to gain access to the module. It will have several large multi-pin electrical connectors attached.
- Disconnect and Remove: Carefully release the locking tabs on each electrical connector and unplug them from the BCM. Then, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
- Install the New BCM: Mount your newly programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Final Steps: Reinstall any dash panels you removed and reconnect the negative battery terminal. Your vehicle is now ready to start.
Important Post-Installation Notes
While our programming service makes this a plug-and-play repair, some vehicle systems may require a ‘handshake’ with the new BCM. This is normal. Specifically, be aware of the following:
- Airbag System Sync: If your airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure must be performed using a professional-grade scan tool. This syncs the airbag system with the BCM.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor relearn may be needed to ensure correct brake light and stability control operation.
Disclaimer: Procedures can vary slightly by model. 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 a wide range of General Motors vehicles. Please match your original part number to one of the following to ensure compatibility: 13592137, 13506935, 13506936, 13587704, or 13594764. This part is confirmed to fit the following models:
- ✔️ 2015 Chevrolet Corvette
- ✔️ 2015-2016 Chevrolet Impala (New Style)
- ✔️ 2015 Chevrolet Silverado 1500, 2500, 3500
- ✔️ 2015 Chevrolet Suburban 1500
- ✔️ 2015 Chevrolet Tahoe
- ✔️ 2015-2018 Chevrolet Sonic
- ✔️ 2015 GMC Sierra 1500, 2500, 3500 & Denali Models
- ✔️ 2015 GMC Yukon & Yukon XL 1500
- ✔️ 2015 Cadillac Escalade & Escalade ESV
- ✔️ 2015-2016 Cadillac ATS
- ✔️ 2015-2016 Cadillac CTS
- ✔️ 2015 Cadillac XTS
Frequently Asked Questions
What exactly is a BCM cloning service?
It’s a process where we transfer the exact software and vehicle-specific data (like VIN and key codes) from your original BCM to this replacement unit. This makes the new module work in your car instantly without needing expensive dealer programming.
How long does the process take?
We program and ship your replacement BCM the same or next business day after we receive your original module. Return shipping time will depend on your location and the shipping service selected.
Is this a better option than going to the dealer?
For most owners, yes. Our service is typically more affordable and eliminates the need for a separate programming appointment. You receive a part that is ready to install right out of the box, saving you time and money.
What if my original BCM is completely dead or water damaged?
In many cases, even with significant damage, we can still extract the necessary data. If you suspect your module is non-communicative, please contact us before ordering so we can discuss the best approach.
Do I need to send my keys with the module?
No, you do not need to send your keys. Our cloning process transfers all the necessary key information directly from your old BCM to the new one, so your existing keys will work perfectly.
Is there a core charge for my old part?
No, there is no core charge. After we clone the data, you can keep your original module.