Restore Full Electrical Control to Your GM Truck or Van
Are you tired of chasing electrical gremlins in your Silverado, Sierra, or Express van? Intermittent power windows, flickering lights, a security system that won’t let your truck start, or random warning lights on the dash are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a host of frustrating and unpredictable problems. This isn’t just an annoyance; it’s a matter of reliability and safety. In my 20+ years of diagnostics, I’ve seen how a failing BCM can mimic a dozen other issues, leading to wasted time and money on incorrect repairs.
This is your direct-fit, hassle-free solution. We offer a genuine replacement BCM that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This means no expensive trips to the dealership for programming. You receive a module loaded with the latest GM software updates, ensuring optimal performance and compatibility right out of the box. Simply provide your VIN at checkout, and we handle the rest, getting you a reliable part that’s ready for installation.
Case Study: A Tricky Diagnosis
A customer brought in his 2006 Silverado 2500 with a complaint that was all over the map. The radio would turn off randomly, the driver’s side power window worked only when it wanted to, and occasionally the truck wouldn’t start, showing a security light. He had already replaced the battery and checked the alternator. After hooking up my scan tool, I saw several communication loss codes with various modules. This is a tell-tale sign. Instead of a dozen separate problems, the issue was one faulty central component: the BCM. We replaced it with a VIN-programmed unit like this one, and every single electrical issue was resolved instantly. It saved him from a wild goose chase of expensive parts and labor.
Is Your GM Truck or Van Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system preventing the engine from starting (security light on).
- ✔ The horn honking unexpectedly or not working.
- ✔ False warnings on the instrument cluster (e.g., “door ajar”).
- ✔ Communication errors with other vehicle modules when scanned.
A Straightforward Guide to Your BCM Installation
Installing your new 2003-2007 GM BCM is a manageable task for a confident DIYer. The location varies between trucks (under the steering column) and vans (center dash). Always confirm the location for your specific model.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: On Silverado/Sierra pickups, it’s typically located under the driver’s side dashboard, near the steering column. On Express/Savana vans, it’s often behind the center dash trim.
- Remove Connectors: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be depressed. Do not force them.
- Swap the Module: Unbolt or unclip the old BCM from its mounting bracket and remove it. Install the new, pre-programmed BCM in its place.
- Reconnect Everything: Plug all electrical connectors securely into the new module. Reconnect the negative battery terminal.
- Post-Installation Procedures: Turn the key to the ‘ON’ position. Crucially, you may need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the airbag light. Some vehicles may also require a Brake Pedal Position Sensor recalibration.
Verified Vehicle Compatibility for Part 15116065
This module is a direct replacement for several part numbers, including 15167329, 15194169, 15747545, 15136224, 15198115, 15136876, and 10367689. It fits a wide range of GM vehicles. Please check the detailed list below to confirm your specific model and options.
EXPRESS/SAVANA 1500/2500/3500 VAN (2003-2007) – Body Control (BCM); located in the center dash. Check for options like ‘commercial tradesman package’.
SSR (2003-2006) – Body Control (BCM).
Note: ‘Classic style’ for 2007 models refers to the body style with the creased door skin, not the newer GMT900 platform.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, absolutely. Providing your VIN is essential. We use it to program the BCM with the correct software and vehicle-specific options from GM. This ensures it communicates properly with your truck’s other modules and avoids a trip to the dealer.
Will this fix my ‘Service Airbag’ light?
After installing the new BCM, the airbag light will likely be on. This is normal. You must have a technician with a capable scan tool perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the BCM with the airbag system (SDM) and turns off the light.
Is any other programming needed after installation?
Our pre-programming handles the critical software. However, in addition to the airbag key setup, some vehicles may require a Brake Pedal Position Sensor recalibration. A standard key relearn procedure may also be needed, which typically involves cycling the key in the ignition. These are standard procedures after a BCM replacement.
What tools do I need for the installation?
Basic hand tools like a socket set and screwdrivers are usually all that’s needed for the physical swap. However, for the essential post-installation steps (airbag reset, etc.), a high-level diagnostic scan tool is required. If you don’t have one, we recommend having a professional mechanic complete the final steps.
How do I know if my BCM is the problem?
Multiple, unrelated electrical issues are the biggest clue. If your power locks, windows, radio, and security system are all acting up, the BCM is a primary suspect. A proper diagnosis with a scan tool that can communicate with the BCM is the best way to confirm the failure.