Is Your Cadillac Experiencing Baffling Electrical Problems?
If your 2003-2006 Cadillac Escalade ESV is suffering from erratic behavior like flickering lights, unresponsive power windows or door locks, or a malfunctioning climate control system, a failing Body Control Module (BCM) is the most likely cause. The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can create a host of frustrating and difficult-to-diagnose issues. This OEM-quality replacement module, part number 15064149, is the definitive solution to restore your vehicle’s full functionality.
From the Diagnostic Bay
We had a 2005 GMC Yukon Denali come in with a complaint of the driver’s side power window not working and the radio display going blank intermittently. The owner had already replaced the window motor and switch with no success. After a quick scan, we found communication loss codes pointing to the BCM. Instead of hours of chasing wires, we installed a VIN-programmed BCM. In under 10 minutes, the window was working perfectly, the radio was stable, and the customer was thrilled to have avoided more costly and incorrect repairs. It’s a classic example of how a faulty BCM can mimic other component failures.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not turning on.
- ✔ HVAC and climate control functions being unresponsive or blowing air incorrectly.
- ✔ Airbag warning light illuminated on the dash, often with a B1001 code.
- ✔ Vehicle security system acting up, causing no-start conditions or false alarms.
- ✔ Wipers behaving erratically or not parking in the correct position.
- ✔ A variety of seemingly unrelated Diagnostic Trouble Codes (DTCs).
Why Choose Our Programmed 2003-2006 Escalade ESV BCM?
This isn’t just a part; it’s a complete, ready-to-install solution. We pre-program the module to your vehicle’s specific VIN before shipping. This critical step ensures that the BCM communicates flawlessly with your Escalade’s other electronic systems right out of the box. You can skip the expensive trip to the dealership for programming, saving you time and hundreds of dollars. This module is built to strict OEM standards for reliability and longevity, ensuring it resolves your current issues and prevents future electrical failures. It’s the most efficient and cost-effective way to get your luxury SUV back on the road.
Installation and Post-Install Notes
Installation is a straightforward process for a DIYer or any professional technician. The BCM is typically located under the driver’s side dashboard, near the steering column. Simply disconnect the vehicle’s battery, remove the old module, plug in the new one, and reconnect the battery. There is no core charge, so you can keep your old part without any hassle.
In some cases, particularly if the airbag light was on, a post-installation procedure may be needed. If the airbag warning light remains illuminated, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function to sync the systems. This is a simple procedure for any well-equipped auto shop.
Frequently Asked Questions
What exactly does the Body Control Module do on my Escalade?
The BCM acts as the brain for your vehicle’s comfort and convenience features. It controls the power windows, locks, lights, wipers, security system, and HVAC, ensuring everything works as it should.
Is this BCM truly plug-and-play?
Yes. Because we program it to your vehicle’s VIN before it ships, it will be ready for installation upon arrival. This eliminates the need for additional dealership programming for most functions.
What if my airbag light is on after I install it?
If the airbag light is on, the BCM needs to be synced with the vehicle’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key’ procedure, which can be performed by a qualified technician with a professional-grade scan tool.
Do I need to send my old part back?
No, there is no core charge or requirement to return your original module.
Will this fit other GM vehicles besides the Escalade ESV?
Yes, this BCM is compatible with a wide range of 2002-2007 GM trucks and SUVs, including the Silverado, Sierra, Tahoe, Yukon, Suburban, and Hummer H2. It interchanges with part numbers 15116066, 15136225, 15198116, and many others.