Restore Full Electrical Function to Your GM Truck
If your 2003-2007 GMC Sierra 2500 is plagued by bizarre electrical issues, a failing Body Control Module (BCM) is the most common cause. This critical component acts as the central hub for your truck’s body electronics. When it malfunctions, you can experience a frustrating array of problems, from flickering lights and a dead battery to a complete no-start condition. This genuine OEM-quality BCM, part number 15137394, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a hassle-free, plug-and-play installation.
We had a 2006 Sierra 2500 towed in that was baffling its owner. The interior lights would stay on intermittently, draining the battery overnight, and the power door locks worked only when they wanted to. After ruling out wiring issues, we pinpointed the BCM. The internal relays were failing, causing the parasitic draw. Installing a VIN-programmed Sierra 2500 Body Control Module like this one resolved all the issues in under 15 minutes. The customer drove away with a reliable truck and no more worries about a dead battery in the morning.
Symptoms of a Failing Sierra 2500 Body Control Module
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or security system acting up.
- ✔ HVAC controls not responding or blower motor issues.
- ✔ Airbag warning light illuminated on the dash, often with DTC B1001.
- ✔ Unexplained battery drain or parasitic draw.
- ✔ Intermittent no-start or security system-related starting problems.
- ✔ A variety of communication or body-related Diagnostic Trouble Codes (DTCs).
The Plug-and-Play Solution
Don’t waste time and money at the dealership. We take the complexity out of the repair by programming the module to your truck’s specific VIN before it ships. This ensures all factory options you paid for work correctly right out of the box. It’s a direct replacement for a wide range of part numbers, including 15116066, 15137393, 15198116, and more, guaranteeing a perfect fit and restored performance for your Silverado, Suburban, Tahoe, Yukon, or Escalade.
Installation and Post-Install Notes
Installation is straightforward for the average DIYer. The BCM is typically located under the driver’s side dashboard, near the steering column. Simply disconnect the battery, unclip the electrical connectors, remove the old module, and install the new one. While the unit is plug-and-play for most functions, please note:
- Airbag System Sync: If your airbag light is on after installation, a technician will need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool.
- Brake Pedal Position: In some cases, a brake pedal position sensor relearn may be needed to ensure proper brake light operation.
There is no core charge for this part, so you can keep your old module without the hassle of returning it.
Frequently Asked Questions
What does the Body Control Module do on a 2003-2007 Sierra 2500?
The BCM is a computer that controls a wide range of non-engine related functions, including the power windows, door locks, security system, interior and exterior lighting, wipers, and HVAC system.
Why is VIN programming so important for a BCM?
VIN programming loads your truck’s specific configuration and options into the module. Without it, features like keyless entry, power seats, or specific lighting packages may not work correctly. Our pre-programming service saves you a costly trip to the dealer.
Is this BCM difficult to install myself?
No, the physical installation is very simple and usually takes less than 15 minutes. It involves unplugging the old module and plugging in the new one. It’s located in an accessible spot under the steering column.
Will this fix my airbag warning light?
This module can resolve BCM-related airbag codes like B1001. However, after installation, the system may require a ‘Setup SDM Primary Key’ procedure with a high-level scan tool to sync with the airbag system and turn off the light.
My original part number is 15116066. Will this part work?
Yes, this BCM is a direct replacement and is interchangeable with numerous part numbers, including 15116066, 15137393, 15198116, and many others listed in the fitment data.
Do I need to return my old BCM?
No, there is no core charge on this part. You can keep your old module without any extra fees or hassle.