Is Your GM Vehicle Acting Possessed? It’s Probably the BCM.
If your 2015 Chevrolet Tahoe, Sierra, Silverado, or other compatible GM vehicle is plagued by a host of bizarre electrical problems, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central nervous system for your vehicle’s body electronics, managing everything from your power windows and locks to your interior lighting and security system. When it starts to fail, it can create a cascade of frustrating and seemingly unrelated issues, making your vehicle unreliable and difficult to use.
We had a 2015 Sierra 1500 come in that was driving the owner crazy. The dome lights would stay on, the radio would randomly shut off, and he was on his third battery in a year due to a parasitic drain nobody could find. He’d already replaced the alternator and battery (twice!). After hooking up our diagnostic tools, we traced the excessive current draw back to a faulty BCM that wasn’t letting other modules go to sleep. Instead of a costly trip to the dealer for a new module and programming, we provided a cloned BCM. The customer swapped it in his driveway, and the electrical gremlins were gone for good. It’s a classic case where the central computer, not the components it controls, is the root of the problem.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic instrument cluster behavior, with gauges dropping out or warning lights flashing incorrectly.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security system acting up, causing false alarms or preventing the engine from starting.
- ✔ Radio or infotainment system randomly turning off and on.
- ✔ A persistent battery drain that kills your battery overnight.
- ✔ Communication errors with other vehicle modules, often showing “U” codes on a scanner.
The Simple, Dealer-Free Solution: Our Cloning Service
Don’t waste time and money at the dealership with a brand new, unprogrammed module that requires expensive, specialized tools. Our professional cloning service is the most efficient and cost-effective way to get your vehicle back to normal. We transfer the critical data—including VIN, mileage, and security information—from your original BCM directly onto this replacement unit. The result is a true plug-and-play module that is ready for installation right out of the box, with no additional programming needed.
How The Process Works:
- ✔ Place Your Order: Complete your purchase for this 2015 Tahoe Body Control Module.
- ✔ We Contact You: We will reach out with clear, simple instructions for shipping your original BCM to our facility.
- ✔ Ship Your Original BCM: Send us your faulty module. The key is that it must still be able to communicate for data transfer.
Post-Installation Notes
While our goal is a 100% plug-and-play experience, some GM vehicles may require a simple relearn procedure after installation. These can often be done with a high-end diagnostic tool.
- Airbag System Sync: If the airbag light is on after installation, a “Setup SDM Primary Key in BCM” procedure is needed to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be necessary to ensure proper brake light and traction control functionality.
Always consult a factory service manual or a qualified technician for vehicle-specific procedures.
Guaranteed Fitment for Part Number 13594764
This BCM is a direct replacement for several part numbers. Please verify that your original module’s part number is on this list:
Interchangeable Part Numbers: 13592137, 13506935, 13506936, 13587704, 13594764
This module is compatible with a wide range of 2015-2018 GM cars, trucks, and SUVs. Please use the fitment list below for reference, but matching the part number is the most accurate way to ensure compatibility.
Frequently Asked Questions
What is a BCM cloning service?
Cloning is the process of reading the essential vehicle-specific data (like the VIN, security keys, and option configuration) from your original BCM and writing it directly onto a replacement module. This makes the replacement unit an exact digital copy, allowing it to work in your vehicle without requiring expensive dealer programming.
Why do I have to send you my original BCM?
Your original BCM contains the unique data that is married to your specific vehicle. We need it to perform the data transfer. Without your original module, the replacement would be a blank slate and would not start or operate your vehicle’s electronics correctly.
Is this solution truly plug-and-play?
Yes, in over 95% of cases, it is completely plug-and-play. You simply install the module we send you and your vehicle’s functions are restored. In a small number of cases, as noted above, a simple relearn procedure like an airbag sync may be required.
What if my original BCM is completely dead or water damaged?
As long as the main processor on the circuit board is intact and we can establish communication, we can typically recover the data. If the module is severely damaged (burnt, shattered, etc.), please contact us before ordering to discuss options.
How long does the entire process take?
Once we receive your original module, our service time is typically 1-2 business days. The total time will depend on the shipping speed you choose to send your module to us and the return shipping method.