Is Your GM Vehicle Acting Possessed? It Could Be The BCM.
If you’re dealing with a frustrating array of electrical gremlins in your 2015 Cadillac Escalade, Chevrolet Silverado, GMC Sierra, or another compatible GM vehicle, 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 door locks to the interior lights, security system, and even communication with other modules. When it starts to fail, the symptoms can be unpredictable and maddening.
We had a 2015 Sierra Denali come into the shop with a complaint that was driving the owner crazy. The interior dome lights would flicker randomly, the radio would sometimes not turn on, and occasionally he’d find his battery dead in the morning. He’d already replaced the battery and alternator. After hooking up our diagnostic scanner, we saw multiple communication loss codes with various systems. We traced the issue to a BCM that was failing internally, causing a parasitic draw and disrupting the vehicle’s network. A programmed replacement like this one solved all his issues instantly, without a costly trip to the dealership.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not working at all).
- ✔ The security system or keyless entry malfunctioning.
- ✔ Dashboard warning lights appearing randomly.
- ✔ Communication errors with other vehicle modules (DTC U-codes).
- ✔ Unexplained battery drain that leaves you stranded.
- ✔ Issues with the climate control or radio operation.
The Simple, Plug-and-Play Solution for Your 2015 Escalade BCM
Forget about expensive dealership visits and the hassle of programming a new module from scratch. Our service provides a straightforward and reliable fix. This listing is for a replacement BCM, compatible with part numbers 13593214, 13594692, 13594768, 13580690, 13591519, and 13594769, that comes fully programmed with your vehicle’s original data. The process is simple: you purchase this service, ship your original BCM to us, and we handle the rest. We will meticulously transfer all the critical data—including VIN, mileage, and key information—to the replacement unit. When you receive it back, it’s a true plug-and-play installation.
Installation and Post-Install Considerations
Physically replacing the BCM, typically located under the steering column or on the LH firewall, is a straightforward task for any competent DIYer or mechanic. Once installed, the module is ready to go. However, in some cases, a couple of simple relearn procedures may be necessary:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control function, a brake pedal position sensor recalibration might be required on certain models.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
Frequently Asked Questions
What exactly is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors a wide range of electronic accessories not related to the engine, such as power windows, locks, lights, wipers, and the security system. It acts as a central hub for these functions.
How does your programming service work?
You send us your original, faulty BCM. We use specialized equipment to extract the unique data from it and transfer that data to a fully functional replacement BCM. This process, often called cloning, ensures the replacement module is a perfect match for your vehicle’s configuration, making it plug-and-play.
Do I need to have this module programmed by a dealer?
No. The entire point of our service is to eliminate the need for dealer programming. The module you receive from us will be pre-programmed and ready for installation right out of the box.
How long does the service take?
We typically program and ship the replacement module within 1-2 business days of receiving your original BCM. We will provide you with a return tracking number as soon as it ships.
What if my original BCM is completely dead or not communicating?
In most cases, even if the BCM is non-functional, we can still retrieve the necessary data. Please contact us before purchasing if your module has severe water or fire damage.
Will this fix my specific problem?
If your vehicle’s issues match the common symptoms of BCM failure and a professional diagnosis has pointed to the BCM, this service is a reliable solution. It resolves problems caused by an internal failure of the module itself.