Restore Full Electrical Control to Your Cadillac
Are you battling bizarre electrical issues in your 2003-2006 Cadillac Escalade EXT? One minute the power windows work, the next they don’t. The security light flashes randomly, or the HVAC system has a mind of its own. These aren’t separate problems; they’re classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s comfort and convenience features, a faulty BCM can cause a cascade of frustrating, hard-to-diagnose symptoms. This replacement Body Control Module, part number 15137393, is the definitive solution, arriving pre-programmed to your truck’s specific VIN for a true plug-and-play repair.
Forget about expensive dealership visits, towing fees, and waiting days for programming. We handle the complex part for you. Simply provide your vehicle’s VIN at checkout, and our technicians will flash the module with the latest GM software updates. This ensures seamless communication between the BCM and your vehicle’s other systems, restoring all functions to factory-original operation. It’s the most efficient way to get your luxury truck back to performing as it should.
Case Study: A Tricky Diagnosis
I had a 2005 Escalade EXT in the bay last month that was a real head-scratcher for the owner. The main complaint was an intermittent no-start, but he also mentioned the radio would sometimes cut out and the dome lights would flicker. He’d already replaced the battery and checked the alternator. When I connected my scanner, I found a handful of communication codes (U-codes) and a B1001 DTC. After checking the main power and ground circuits to the BCM, I found a corroded ground connection under the driver’s side dash—a common failure point. The corrosion had damaged the BCM internally. Installing a pre-programmed module like this one, after cleaning the ground point, resolved all issues instantly. It highlights how a single component can create multiple, seemingly unrelated symptoms.
Your Solution for a Failing 2003-2006 Escalade EXT BCM
This module is not just a replacement part; it’s a permanent fix for the electrical gremlins plaguing your vehicle. Built to meet or exceed OEM specifications, it ensures long-term reliability. By installing our VIN-programmed 2003-2006 Escalade EXT BCM, you’re not just swapping a part—you’re restoring the core of your truck’s electronic nervous system, ensuring everything from the door locks to the dashboard lights works in perfect harmony.
Is Your Escalade Showing These Signs?
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor works intermittently.
- ✔ The security system malfunctions, causing a no-start or crank-no-start condition.
- ✔ The airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ Interior or exterior lights flicker, stay on, or fail to turn on.
- ✔ Inconsistent wiper operation.
- ✔ A flurry of communication codes (U-codes) stored in the system.
A Straightforward Guide to Installation
- ✔ Safety First: Before you begin, disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and allow the system to reset.
- ✔ Locate the BCM: On the 2003-2006 Escalade EXT, the BCM is typically located under the driver’s side of the dashboard, near the steering column. It’s a black plastic box with several large electrical connectors.
- ✔ Remove the Old Module: Carefully unplug the wiring harness connectors. They have locking tabs that need to be depressed. Once unplugged, unbolt or unclip the old BCM from its mounting bracket.
- ✔ Install the New Module: Seat the new, pre-programmed BCM into the mounting bracket and securely plug in all the wiring harnesses. You’ll hear a click as they lock into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions: windows, locks, lights, wipers, and HVAC to confirm the repair is successful.
- ✔ Post-Installation Steps: In some cases, a ‘Setup SDM Primary Key in BCM’ procedure may be needed if the airbag light remains on. This requires a professional scan tool. A brake pedal position relearn might also be necessary.
Verified Vehicle Compatibility
This Body Control Module is a direct replacement for part number 15137393 and is interchangeable with several other part numbers, ensuring broad compatibility. It is guaranteed to fit the following models:
- Cadillac Escalade, ESV, EXT (2003-2006)
- Chevrolet Avalanche 1500/2500 (2003-2006)
- Chevrolet Silverado 1500/2500/3500 Pickup (2003-2007 Classic)
- Chevrolet Suburban 1500/2500 (2003-2006)
- Chevrolet Tahoe (2003-2006)
- GMC Sierra 1500/2500/3500 Pickup & Denali (2003-2007 Classic)
- GMC Yukon & Yukon XL / Denali (2003-2006)
- Hummer H2 (2003-2007)
- Chevrolet Express & GMC Savana Vans (2004-2007, w/ opt PRP)
Note: Always verify your part number or consult with us if you are unsure about fitment.