Is Your GM Truck or SUV Plagued with Bizarre Electrical Problems?
If you’re dealing with flickering lights, unresponsive power windows, a malfunctioning HVAC system, or a persistent airbag light in your 2003-2006 Cadillac Escalade, Chevy Silverado, or GMC Sierra, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central command center for your vehicle’s body electronics. When it fails, it can cause a cascade of frustrating and difficult-to-diagnose issues. This OEM-quality BCM, part number 15136225, is the definitive solution to restore your vehicle’s electronic systems to perfect working order.
From the Diagnostic Bay
We had a 2005 Silverado 2500 in the shop where the owner had already replaced the blower motor resistor and the HVAC control head, but the fan would still only work intermittently. He was convinced it was a wiring issue. After a quick scan, we saw multiple communication DTCs pointing to the BCM. Instead of spending hours chasing wires, we installed a VIN-programmed BCM. In under 10 minutes, the HVAC system, power locks, and interior lights were all working flawlessly. A faulty BCM can mimic many other component failures, making it the smart first replacement for widespread electrical issues.
Diagnosing a Faulty Body Control Module
A failing BCM can manifest in numerous ways, often making you think multiple, unrelated parts have failed at once. Before you start replacing individual switches and motors, check if you’re experiencing these common symptoms.
- ✔ Unresponsive or erratic power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ HVAC system failures, such as a non-working blower fan or inability to change temperature.
- ✔ An active airbag warning light, often accompanied by DTC B1001.
- ✔ Security system malfunctions, leading to a no-start condition or false alarms.
- ✔ Intermittent or non-functional windshield wipers.
Why Choose Our 2003-2006 Escalade BCM?
This isn’t just a replacement part; it’s a complete, hassle-free solution. We pre-program the module to your vehicle’s specific VIN, ensuring it works perfectly right out of the box. This eliminates the need for an expensive trip to the dealership for additional programming. Built to strict OEM standards, this 2003-2006 Escalade BCM guarantees reliable performance and longevity. Installation is straightforward, typically located under the driver’s side dash, and requires no special tools. Plus, with no core charge, you can complete the repair without the inconvenience of returning your old part.
This module is a direct replacement for a wide range of part numbers, including: 10383536, 15116066, 15136225, 15136877, 15137393, 15137394, 15137395, 15137396, 15198116, 15257043, 15257044, 15257045, 15257046, 10367690, 15064149, and 15194170.
Post-Installation Information
While the module is plug-and-play, some vehicles may require a ‘Setup SDM Primary Key in BCM’ procedure if the airbag light remains on. This syncs the new BCM with the airbag system and must be done with a professional-grade scan tool. Additionally, a Brake Pedal Position Relearn may be needed on certain models to ensure correct brake light and traction control operation. Always consult a service manual for your specific vehicle’s requirements.
Frequently Asked Questions
What does this Body Control Module do?
The BCM acts as the brain for your vehicle’s body electronics. It controls non-engine related functions like your lights, power windows and locks, wipers, security system, and HVAC climate control.
Do I need to program this module?
No. We pre-program the module to your vehicle’s VIN before shipping. This ensures it is ready for immediate installation and operation without requiring a trip to the dealership for programming.
Is this part difficult to install?
Installation is generally simple for a DIYer with basic tools. The BCM is typically located under the steering column. The process involves disconnecting the battery, removing a few trim panels, and swapping the electrical connectors to the new module. It usually takes less than 30 minutes.
What if my airbag light is on after installation?
If the airbag light is illuminated after you install the new BCM, your vehicle will require an ‘SDM Key Setup’ procedure. This requires a professional bidirectional scan tool to sync the new BCM with the existing airbag system.
How can I be sure this fits my truck?
This module fits a wide range of 2002-2007 GM trucks and SUVs, including the Escalade, Silverado, Sierra, Tahoe, and Suburban. Please verify your original part number matches one of the interchangeable numbers listed on this page or use our vehicle fitment tool to confirm compatibility.