Restore Full Control Over Your Cadillac Escalade ESV

If you’re battling bizarre electrical issues in your 2003-2006 Cadillac Escalade ESV—like flickering lights, a dead instrument cluster, or an HVAC system with a mind of its own—the Body Control Module (BCM) is the likely culprit. As the central command center for your vehicle’s body electronics, a failing BCM can create a cascade of frustrating and seemingly unrelated problems. This replacement module, interchangeable with part number 15136225, is the definitive solution to get your luxury SUV operating flawlessly again.

We take the guesswork and high dealership costs out of the equation. Each module is expertly programmed to your vehicle’s specific VIN before it ships. This means no expensive trips to the dealer for programming—it’s ready for a true plug-and-play installation right out of the box. This is the same reliable fix I’ve recommended to hundreds of customers to solve persistent electrical gremlins for good.

Is Your Escalade Showing These Electrical Faults?

A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your solution. Here are the most common signs I see in my shop:

• ✔ Intermittent or non-functional power windows, door locks, or interior lights.
• ✔ HVAC controls not responding or blower motor staying on or off.
• ✔ The security system acting up, leading to a no-start condition.
• ✔ An airbag warning light on the dash, often with a DTC like B1001 (Option Configuration Error).
• ✔ Unpredictable behavior from windshield wipers or the radio.
• ✔ Multiple communication DTCs (U-codes) stored in various modules.

Plug-and-Play Installation: Get Back on the Road Fast

Replacing the 2003-2006 Escalade ESV BCM is a job most DIYers can handle in their own driveway in under 10 minutes. Because we program it to your VIN, you can skip the complex and costly dealership procedures.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and allow the systems to reset.
2. Locate the Module: On the Escalade ESV, the BCM is typically found under the driver’s side of the dashboard, to the left of the steering column. It’s a small black box with several multi-pin connectors.
3. Swap the Part: Carefully unplug the electrical connectors from the old BCM. They have release tabs that need to be pressed. Once unplugged, remove the old module (it’s often held by simple clips or a couple of small bolts) and install the new one in its place.
4. Connect and Test: Securely plug the connectors into your new, pre-programmed BCM. Reconnect the battery terminal. Start the vehicle and test all functions—windows, locks, lights, HVAC, etc.—to confirm the repair.
5. Post-Install Checks: In some cases, an airbag light may persist. This requires a professional scan tool to perform the “Setup SDM Primary Key in BCM” procedure. This is a simple sync that re-establishes communication between the new BCM and the airbag system.

Verified Vehicle Compatibility

This Body Control Module is a direct-fit replacement for a wide range of General Motors trucks and SUVs. While this page focuses on the 2003-2006 Escalade ESV BCM, it is also compatible with the following vehicles. Please verify your part number (15136225 or an interchange number) for a guaranteed match.