Are you battling frustrating electrical problems in your GM truck or van? Issues like flickering lights, malfunctioning power windows and locks, or a persistent security light are often traced back to a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it falters, it can cause a wide range of confusing and intermittent symptoms. This replacement BCM is the definitive solution to restore your vehicle’s functionality and peace of mind.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. Each module is meticulously programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This process ensures that the BCM has the latest software updates from GM and is perfectly matched to the options and features of your truck or van. Simply provide your VIN after purchase, and we handle the complex programming for you, saving you a trip to the dealership and additional programming fees.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights
- ✔ Power windows, mirrors, or door locks not working correctly
- ✔ Vehicle security system engaging randomly or preventing the engine from starting
- ✔ Horn sounding unexpectedly or not working at all
- ✔ Wipers behaving erratically or not turning off
- ✔ Warning lights on the dashboard with no apparent cause
- ✔ Communication issues with other vehicle modules
Solving Issues with Your 2003-2007 GM Truck BCM
This module is a direct replacement for a wide range of GM trucks and vans from 2003-2007, including the Silverado, Sierra, Express, and Savana. It is compatible with multiple original part numbers, including 15167329, 15194169, 15747545, and 15198115. By installing our pre-programmed 2003-2007 GM Truck BCM, you are not just fixing the symptoms but restoring the core of your vehicle’s electronic convenience and security systems.
Installation and Post-Install Procedures
Installation is straightforward for a DIYer with basic tools, typically located under the steering column or in the center dash area. Once installed, most functions will be immediately restored. However, in some cases, additional steps may be needed:
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: A recalibration of the brake pedal position sensor may be required on certain models to ensure proper brake light and traction control operation.
There is no core charge for this part. You can keep your old module, eliminating the hassle and expense of shipping it back.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls various electronic accessories, such as power windows, locks, lights, wipers, and the security system.
Is this BCM truly plug-and-play?
Yes, for the most part. We program it to your VIN so it’s ready to install without needing a dealership visit for initial programming. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal position sensor, which can be done with a compatible high-end scan tool.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information.
Do I need to return my old BCM?
No. This part has no core charge. You can keep your original module, saving you time and money on return shipping.
What if my airbag light comes on after I install the new BCM?
This indicates the new BCM needs to be synced with your vehicle’s airbag system (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ must be performed using a professional-grade diagnostic tool to resolve this.
Will this fix my ‘Service 4WD’ message?
While a faulty BCM can cause a variety of issues, a ‘Service 4WD’ message is more commonly related to the Transfer Case Control Module (TCCM) or a sensor in the 4WD system. It’s important to diagnose the specific codes before ordering parts.