Restore Full Functionality to Your Cadillac
Are you battling frustrating electrical issues in your 2003-2006 Cadillac Escalade EXT? Randomly failing power windows, a dead HVAC system, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). As the central command for your truck’s comfort and convenience features, a faulty BCM can make driving a nightmare. This direct-replacement BCM, part number 15064149, is the definitive solution, arriving expertly pre-programmed to your vehicle’s VIN for a true plug-and-play fix.
From the Diagnostic Bay
I remember a 2005 Escalade EXT that came into my shop with a laundry list of bizarre electrical problems. The radio would cut out, the driver’s side power window was dead, and the security light was flashing, causing a no-start condition. The owner had already replaced the battery and checked fuses. After plugging in my scanner, I saw a dozen communication codes all pointing back to one culprit. A failing BCM. We swapped in a VIN-programmed module like this one, and in less than 10 minutes, every single issue was resolved. This isn’t just a part; it’s a permanent fix for those gremlins.
Is Your Escalade Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The HVAC blower motor or climate controls are unresponsive.
- ✔ Annoying ‘Service Airbag’ light on the dash, often with a DTC like B1001.
- ✔ Vehicle security system acting up, leading to a no-start or crank-no-start situation.
- ✔ Erratic behavior from interior or exterior lights.
- ✔ A cluster of communication-related Diagnostic Trouble Codes (DTCs).
Your 5-Minute Path to a Perfect Fix
Installing your new 2003-2006 Escalade EXT BCM is a straightforward job that most DIYers can handle with basic tools. No need to schedule a costly dealership visit.
- Safety First: Always disconnect the negative terminal on your vehicle’s battery before starting any electrical work.
- Locate the Module: On the Escalade EXT, the BCM is conveniently located under the driver’s side of the dashboard, near the steering column.
- Swap the Connectors: Carefully unplug the wiring harnesses from your old BCM and plug them into the corresponding ports on your new module. The connectors are color-coded and keyed to prevent mistakes.
- Reconnect and Test: Reconnect the battery terminal. Start your vehicle and test all the functions—windows, locks, HVAC, wipers, and lights—to confirm the repair was successful.
Important Post-Installation Note: In some cases, you may need a professional scan tool to perform a ‘Setup SDM Primary Key in BCM’ procedure if the airbag light remains on. A Brake Pedal Position Relearn might also be needed. These are simple procedures for any qualified technician.
Verified Fitment for Your Cadillac & More
This module is a guaranteed fit for your 2003-2006 Cadillac Escalade EXT. It also serves as a direct replacement for a wide range of GM trucks and SUVs from this era, ensuring broad compatibility. It interchanges with part numbers including 15116066, 15136225, 10383536, and 15198116. Please verify the part number on your original module or contact us with your VIN to confirm compatibility.
Frequently Asked Questions
Do I need to take this BCM to the dealership for programming?
Absolutely not. We pre-program the module to your vehicle’s specific VIN before shipping. It arrives ready for immediate installation, saving you time and money.
Where is the BCM located on my 2004 Escalade EXT?
The Body Control Module is located under the driver’s side dashboard, attached near the steering column for easy access.
What happens if my airbag light is still on after I install it?
If the airbag light remains illuminated, it means the new BCM needs to be synced with the airbag system’s SDM. This requires a ‘Setup SDM Primary Key in BCM’ procedure using a professional-grade diagnostic scanner.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module without any hassle or extra fees.
Will this fix my power windows and door locks not working?
Yes. Failure of the power windows, door locks, and other interior accessories are the most common symptoms of a bad BCM. This part is designed to resolve those specific issues.