If you’re dealing with baffling electrical problems in your 2003-2006 Cadillac Escalade, you’ve come to the right place. As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable luxury SUV into a source of constant frustration. From flickering lights to a vehicle that won’t start, the BCM is the central command for your vehicle’s body electronics, and when it fails, chaos ensues. This isn’t just an inconvenience; it can be a serious safety issue.
This is a direct-fit replacement Body Control Module, part number 15137394, for your Escalade and a wide range of other GM trucks and SUVs. The most critical feature? It arrives at your door fully programmed to your vehicle’s specific VIN. This eliminates the need for an expensive trip to the dealership for programming, saving you hundreds of dollars and significant downtime. You get a reliable, OEM-standard part that’s ready for immediate installation right out of the box.
Is Your Escalade Showing These Telltale Signs?
A faulty BCM often creates a pattern of strange, seemingly unrelated symptoms. In my shop, these are the most common complaints that point directly to a failing module:
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The HVAC system is unresponsive, or the blower motor works intermittently.
- ✔ An active airbag warning light on the dash, often with a stored Diagnostic Trouble Code (DTC) like B1001.
- ✔ Security system malfunctions, causing the alarm to go off randomly or triggering a no-start condition.
- ✔ Unexplained battery drain or strange grounding issues that are hard to trace.
- ✔ Wipers that won’t turn on, off, or operate correctly.
A Technician’s Notebook
I remember a 2005 Escalade ESV that came into the bay with a classic ‘electrical gremlin’ case. The owner had already replaced the battery and alternator, but the dashboard lights would still flicker randomly, and occasionally the truck would refuse to start. A quick scan showed a cluster of communication codes. Instead of chasing wires for hours, my experience pointed straight to the BCM. These modules, especially on the GMT800 platform, are known to fail internally over time. We installed a VIN-programmed BCM, and within 10 minutes, every single issue was resolved. It’s a textbook example of how this one part can fix a dozen problems at once.
Your 5-Minute Installation Guide
For the confident DIYer or professional mechanic, swapping the BCM is a quick and straightforward job. It’s typically located under the driver’s side dash, near the steering column.
- Safety First: Always disconnect the negative terminal on your vehicle’s battery before beginning work. This prevents electrical shorts and helps reset the vehicle’s electronic systems.
- Locate the Module: Find the BCM under the driver-side dashboard. It’s a black plastic box with several large multi-pin connectors.
- Swap the Part: Carefully unplug the electrical connectors from the old BCM. Unbolt or unclip it from its mounting bracket and remove it. Install the new module in its place and securely reconnect all plugs.
- Reconnect Power: Re-attach the negative battery terminal. Start the vehicle and test all functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
- Post-Installation Checks: In some cases, an airbag light may remain on. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a Brake Pedal Position Relearn might be needed. These are not always required but are good to be aware of.
Verified to Fit These GM Models
This module, also interchangeable with part numbers 10383536, 15116066, 15136225, and 15137393, offers broad compatibility across the GM family. Please verify your specific model and options below.
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
ESCALADE 03-06 Body Control (BCM); (under steering column)
ESCALADE ESV 03-06 Body Control (BCM); (under steering column)
ESCALADE EXT 03-06 Body Control (BCM); (under steering column)
EXPRESS/SAVANA VANS 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
SIERRA/SILVERADO 1500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SIERRA/SILVERADO 1500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), Crew Cab
SIERRA/SILVERADO 2500/3500 PICKUP 03-07 Body Control (BCM); classic style, (under steering column), Crew Cab
SUBURBAN 1500/2500 03-06 Body Control (BCM); (under steering column)
TAHOE 03-06 Body Control (BCM); (under steering column)
YUKON/YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
SIERRA DENALI 03-07 Body Control (BCM); classic style, (under steering column)
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we load your vehicle’s unique 17-digit Vehicle Identification Number (VIN) and all related factory software onto the module before shipping. This ensures it communicates perfectly with your vehicle’s other computers, just like the original, without needing a trip to the dealer.
Is there a core charge for my old part?
No, there is absolutely no core charge. You can keep your old module or dispose of it without any hassle or need to return it to us.
Do I need special tools for the installation?
For the physical installation, you’ll only need basic hand tools like a socket set to access the module. While most vehicles will not require it, a professional-grade scan tool is necessary for post-installation procedures like the airbag system sync if the warning light appears.
Will this fix my ‘Service Airbag’ message?
A faulty BCM is a very common cause of false airbag warnings and codes like B1001. Replacing the BCM often resolves this, but you may need the ‘Setup SDM Primary Key’ procedure performed with a scan tool to clear the light after installation.
How do I provide my VIN?
You will be prompted to enter your vehicle’s VIN during the checkout process. Please double-check it for accuracy to ensure correct programming.