Is Your Cadillac Escalade Experiencing Bizarre Electrical Problems?
If you’re dealing with flickering lights, malfunctioning power windows or locks, a security system that acts up, or an unexplainable battery drain, a failing Body Control Module (BCM) is the likely culprit. The BCM is the central computer for your vehicle’s body electronics, coordinating everything from the interior lights and chimes to the power accessories. When it fails, it can create a host of frustrating and difficult-to-diagnose issues. This replacement module is the definitive solution to restore your truck’s electronic systems to perfect working order.
From the Diagnostic Bay
We had a 2010 Escalade come in with a classic “ghost” problem. The customer complained of a dead battery every few days and said the interior lights would sometimes stay on for no reason. We checked the battery and alternator, which were fine. After connecting our diagnostic tool, we saw multiple communication errors pointing to the BCM. The module wasn’t letting the vehicle’s network go to ‘sleep’ properly, causing a constant parasitic draw. We installed a VIN-programmed BCM like this one, and the problem was solved instantly. The customer was thrilled to have a reliable truck again without the fear of being stranded.
Diagnosing a Faulty 2010 Escalade EXT Body Control Module
A failing BCM can manifest in numerous ways, often mimicking other component failures. This module is the key to resolving these confusing electrical gremlins. By replacing your old unit with this pre-programmed module, you are providing a reliable, updated component to manage your vehicle’s essential functions.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic behavior from the dashboard gauges or warning lights (e.g., security light, check engine light).
- ✔ Headlights, taillights, or interior lights staying on or not turning on at all.
- ✔ The vehicle’s security system preventing the engine from starting.
- ✔ A persistent battery drain that kills the battery overnight or over a few days.
- ✔ Remote keyless entry (RKE) system failure.
- ✔ Radio or climate control systems not functioning correctly.
Plug-and-Play Solution with VIN Programming
Forget expensive trips to the dealership for programming. This Body Control Module is a direct-fit replacement that arrives at your door completely programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load it with the latest GM software updates, ensuring optimal performance and compatibility. Simply provide us with your VIN after purchase, and we’ll handle the complex programming before we ship it. This saves you time, money, and the hassle of coordinating with a dealer or specialized shop.
Installation Note: While this module is designed for a straightforward swap, some vehicles may require a ‘relearn’ or ‘sync’ procedure after installation for certain systems. For example, if the airbag warning light appears, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. A Brake Pedal Position relearn may also be necessary on some models. Always consult a factory service manual for your specific vehicle.
Frequently Asked Questions
What does the Body Control Module (BCM) do on my Escalade?
The BCM acts as the main computer for your vehicle’s non-engine related functions. It controls power windows, locks, lights, the security system, dashboard gauges, and many other comfort and convenience features.
Do I need to have this module programmed by a dealer?
No. This module comes fully programmed to your vehicle’s VIN before it is shipped. It is ready for installation right out of the box, saving you hundreds in dealership programming fees.
How do I provide my VIN number?
After you complete your purchase, we will send you instructions on how to reply with your 17-digit VIN. We cannot program and ship the module without it.
Is the installation difficult?
For most DIY mechanics, the physical swap is straightforward. The BCM is typically located under the steering column. However, as noted, some vehicles may require a post-installation relearn procedure for the airbag or brake systems, which may require a professional scan tool.
What happens if my airbag light is on after I install it?
If the airbag light illuminates, it means the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure using a high-level diagnostic tool.
This part number 20815898 is listed, but my original part has a different number. Will it fit?
Yes. This BCM replaces a wide range of original GM part numbers. As long as your vehicle model and year are on our compatibility list and your original part number is in the list provided, this module will function correctly.