Restore Control and Eliminate Electrical Gremlins
Are you battling bizarre electrical issues in your GM truck or van? Flickering lights, malfunctioning power windows, a security system that has a mind of its own, or dashboard warning lights that won’t go away are classic signs of a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen how a faulty BCM can turn a reliable workhorse into a source of constant frustration. This isn’t just an inconvenience; it can affect the safety and core functionality of your vehicle. This replacement 2003-2007 GM BCM is the definitive solution to get your vehicle’s electronics communicating correctly again.
The BCM is the central nervous system for your vehicle’s body-related functions. It manages everything from your interior lights and power door locks to your key fob and instrument cluster. When it fails, the symptoms can be random and confusing. We take the guesswork and high dealership costs out of the repair. Simply provide your Vehicle Identification Number (VIN) at checkout, and we will program this module with the latest GM software specific to your truck or van. It arrives at your door ready for installation, saving you a trip to the dealer and the expense of their programming service.
From the Diagnostic Bay: The Ghost in the Machine
I remember a 2005 Silverado 2500 that came into my shop with a laundry list of complaints. The owner said his dome lights would stay on, the radio would sometimes not power up, and the ‘Service 4WD’ message appeared intermittently. He’d already replaced the battery and checked fuses. My initial scan showed a slew of communication errors (U-codes) between various modules. After verifying the main power and ground connections to the BCM were solid—a critical first step—it was clear the BCM itself was failing internally. These modules, especially on the GMT800 platform, are known for solder joint failures over time. We installed a pre-programmed BCM, and it was like an exorcism; all the electrical ghosts vanished instantly. This is a repair I’ve performed hundreds of times, and it brings the vehicle right back to factory-spec operation.
Is Your GM Truck or Van Showing These Symptoms?
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The anti-theft or security light is illuminated, preventing the engine from starting.
- ✔ Key fob has stopped working even with a new battery.
- ✔ Gauges on the instrument cluster behaving strangely or not working.
- ✔ Communication Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or U0164.
- ✔ False warnings on the driver information center (e.g., ‘Service Airbag System’).
A Straightforward Guide to BCM Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- ✔ Locate the BCM: On Silverado and Sierra pickups, the BCM is typically located under the driver’s side of the dashboard, near the steering column. For Express and Savana vans, it’s usually found behind the center dash panel.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click into place.
- ✔ Reconnect Power: Reattach the negative battery terminal.
- ✔ Perform Final Checks: Start the vehicle and test all body functions—windows, locks, lights, radio, etc. Refer to the post-installation procedures below if you encounter any warning lights.
Important Information After Installation
While this module is programmed to be as close to plug-and-play as possible, certain vehicle systems may require a recalibration or sync procedure after the BCM is replaced. This is a normal part of the repair process on modern vehicles.
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control operation.
- No Core Charge: You are not required to return your old module. This saves you the time and expense of a core return.
Disclaimer: Vehicle systems and procedures can vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step of the process.
Verified Fitment for Your GM Vehicle
This module is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please confirm your vehicle is on the list below.
SILVERADO 3500 PICKUP 03-05 Body Control (BCM); (under steering column), exc. crew cab
SILVERADO 2500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), MT, exc. Crew Cab
SAVANA 1500 VAN 03 Body Control (BCM); (center dash)
SAVANA 3500 VAN 04-07 Body Control (BCM); (center dash), w/o commercial tradesman package
EXPRESS 1500 VAN 04-07 Body Control (BCM); (center dash), w/o commercial tradesman package
EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/o commercial tradesman package
SAVANA 1500 VAN 04-07 Body Control (BCM); (center dash), w/o commercial tradesman package
SIERRA 1500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), exc. Crew Cab
SIERRA 3500 PICKUP 06 Body Control (BCM); (under steering column), MT, exc. Crew Cab
SILVERADO 2500 PICKUP 03-05 Body Control (BCM); (under steering column), exc. Crew Cab
SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/o commercial tradesman package
SIERRA 2500 PICKUP 06 Body Control (BCM); (under steering column), AT, 4 speed (opt MT1), exc. Crew Cab
SIERRA 2500 PICKUP 03-05 Body Control (BCM); (under steering column), exc. Crew Cab
SIERRA 3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), AT, 4 speed (opt MT1), exc. Crew Cab
SILVERADO 2500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), AT, 4 speed (opt MT1), exc. Crew Cab
SILVERADO 3500 PICKUP 06 Body Control (BCM); (under steering column), MT, exc. crew cab
EXPRESS 2500 VAN 04-07 Body Control (BCM); (center dash), w/o commercial tradesman package
SILVERADO 1500 PICKUP 03-06 Body Control (BCM); (under steering column), exc. Crew Cab
SILVERADO 2500 PICKUP 06 Body Control (BCM); (under steering column), MT, exc. Crew Cab
SILVERADO 3500 PICKUP 06 Body Control (BCM); (under steering column), AT, 4 speed (opt MT1), exc. crew cab
SIERRA 2500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), MT, exc. Crew Cab
SILVERADO 1500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), exc. Crew Cab
SAVANA 2500 VAN 03 Body Control (BCM); (center dash)
SILVERADO 3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), AT, 4 speed (opt MT1), exc. crew cab
EXPRESS 1500 VAN 03 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 03 Body Control (BCM); (center dash)
SIERRA 2500 PICKUP 06 Body Control (BCM); (under steering column), MT, exc. Crew Cab
SIERRA 2500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), AT, 4 speed (opt MT1), exc. Crew Cab
SIERRA 3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), MT, exc. Crew Cab
SILVERADO 2500 PICKUP 06 Body Control (BCM); (under steering column), AT, 4 speed (opt MT1), exc. Crew Cab
SILVERADO 3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), MT, exc. crew cab
EXPRESS 3500 VAN 03 Body Control (BCM); (center dash)
SSR 03-06 Body Control (BCM)
SAVANA 3500 VAN 03 Body Control (BCM); (center dash)
SIERRA 1500 PICKUP 03-06 Body Control (BCM); (under steering column), exc. Crew Cab
SIERRA 3500 PICKUP 06 Body Control (BCM); (under steering column), AT, 4 speed (opt MT1), exc. Crew Cab
Frequently Asked Questions
Frequently Asked Questions
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 order until we receive this information, as the programming is essential for the part to work correctly.
Is this part truly plug-and-play?
It is programmed to be as close to plug-and-play as possible. For most vehicles, you will simply install it and be done. However, due to the complexity of modern vehicle networks, some models may require an additional relearn procedure for systems like the airbags or brakes, which requires a separate tool.
Why is my airbag light on after installing the new BCM?
This is a common security measure. The new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). This is done with a ‘Setup SDM Primary Key in BCM’ procedure using a professional scan tool. It’s a quick procedure for a qualified technician.
What does a Body Control Module (BCM) actually do?
The BCM is a computer that supervises most of your vehicle’s non-engine related functions. This includes power windows, locks, mirrors, interior and exterior lighting, the security system, wipers, and the key fob receiver.
Do I need to send my old BCM back?
No. This purchase does not have a core charge. You can keep your original module, which can be helpful for comparison or as a backup.