Fix Your Escalade’s Electrical Headaches for Good
If you’re dealing with a 2003-2006 Cadillac Escalade ESV that seems to have a mind of its own—flickering lights, a dead instrument cluster, unresponsive power windows, or a security system that prevents it from starting—the root cause is often a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen these exact issues countless times. The BCM is the central command for your vehicle’s body electronics, and when it fails, it creates a cascade of frustrating and unpredictable problems. This isn’t just an inconvenience; it can affect vehicle security and safety. This replacement module, part number 15137395, is the definitive solution, offered with our expert cloning service to make your repair as simple as possible.
From the Diagnostic Bay: The Case of the Haunted Escalade
A customer brought in a 2005 Escalade ESV with a laundry list of bizarre symptoms. The radio would turn on and off, the driver’s side power window wouldn’t work, and the security light was always on, causing intermittent no-start conditions. He had already replaced the battery and checked all the fuses. After connecting my scan tool, I found a slew of ‘U’ codes, indicating a loss of communication between modules. The culprit was a faulty 2003-2006 Escalade ESV BCM. Internal corrosion from moisture intrusion had compromised the circuit board. By providing a cloned BCM, we transferred all the original vehicle data, bypassing the need for a costly dealership re-flash. The customer was back on the road in under an hour, with all systems functioning perfectly.
Is Your Escalade ESV Showing These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Intermittent or non-functional power windows, door locks, or interior lights.
- ✔ The security system engages randomly, leading to a no-start condition.
- ✔ HVAC controls are unresponsive, or the blower motor works sporadically.
- ✔ The airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ Your scan tool shows communication loss codes (U-codes) with other modules.
- ✔ Erratic behavior from dashboard gauges or warning lights.
A Straightforward Guide to Your BCM Replacement
Our cloning service makes this repair incredibly DIY-friendly. Since we transfer your vehicle’s specific data to the replacement unit, you can skip the expensive trip to the dealership for programming.
- Step 1: Locate Your Original BCM. In most 2003-2006 Escalade ESV models, the BCM is located under the driver’s side of the dashboard, near the steering column.
- Step 2: Disconnect the Power. Before unplugging any modules, always disconnect the negative terminal of your vehicle’s battery to prevent electrical shorts.
- Step 3: Remove the Old Module. Carefully unplug the electrical connectors and remove the BCM. Note the orientation of the connectors for easier reinstallation.
- Step 4: Send Us Your Module. Ship your original BCM to us. Our technicians will perform a full data clone to the replacement unit, typically within 24-48 hours.
- Step 5: Install the Cloned BCM. We will ship both your original module and the newly programmed replacement back to you. Simply plug in the cloned BCM, reconnect the battery, and start your vehicle.
Post-Installation Note: In some cases, specific relearn procedures may be necessary. For example, if the airbag light remains on, an ‘SDM Primary Key’ sync may be required using a professional scan tool. A Brake Pedal Position relearn might also be needed. We provide clear instructions for these potential, but not always necessary, steps.
Verified Fitment for Your GM Truck or SUV
This BCM is a direct replacement for part number 15137395 and is interchangeable with a wide range of other part numbers, ensuring broad compatibility. It is a guaranteed fit for the following vehicles:
ESCALADE ESV 03-06 Body Control (BCM); (under steering column)
ESCALADE & ESCALADE EXT 03-06 Body Control (BCM); (under steering column)
Chevrolet:
AVALANCHE 1500/2500 03-06, SILVERADO 1500/2500/3500 03-06 (Crew Cab), SUBURBAN 1500/2500 03-06, TAHOE 03-06 (all under steering column)
GMC:
SIERRA 1500/2500/3500 03-06 (Crew Cab), SIERRA DENALI 03-06, YUKON & YUKON XL 1500/2500 03-06 (all under steering column)
Hummer:
HUMMER H2 03-07 (LH dash)
Vans (with commercial tradesman package opt PRP):
EXPRESS/SAVANA 1500/2500/3500 04-07 (center dash)
Frequently Asked Questions
What exactly is the cloning service?
Our cloning service is a process where we transfer the vital vehicle-specific data—like the VIN, mileage, and security information—from your original BCM to the replacement unit. This makes the new module a perfect electronic match for your Escalade, eliminating the need for dealership programming.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, we need your original module to extract the data. We will return your original part along with the newly programmed replacement.
Is this a difficult part to install myself?
No, the physical installation is very straightforward for most DIYers with basic tools. It involves removing a few dash panels and unplugging connectors. Our cloning service handles the difficult electronic programming part for you.
What happens if my airbag light comes on after installation?
This can occasionally happen. It means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). This procedure, called ‘Setup SDM Primary Key in BCM’, must be done with a bi-directional scan tool. It’s a quick procedure for any professional mechanic.
Is there a core charge for this part?
No, there is no core charge. We always return your original module, so you don’t have to worry about extra fees or returning a core for a refund.