Restore Your Vehicle’s Electrical System with a Pre-Programmed BCM
If you’re dealing with bizarre electrical issues in your GM truck or van—like flickering lights, malfunctioning power windows, or a security system that has a mind of its own—a failing Body Control Module (BCM) is often the culprit. As the central hub for your vehicle’s body electronics, its failure can cause a cascade of frustrating problems. This isn’t just an inconvenience; it can affect vehicle safety and security. We offer a reliable, straightforward solution: a replacement BCM, pre-programmed with the latest GM software specifically for your vehicle’s VIN.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2006 Express 2500 work van that came into my shop. The owner was at his wit’s end. The dome lights would stay on, the battery would be dead every other morning, and the power locks worked intermittently. He’d already replaced the battery and checked the alternator. After hooking up the scan tool, I saw a handful of U-codes (communication errors) pointing to the BCM. A quick inspection under the dash revealed the classic signs of water intrusion from a leaky windshield seal. The corrosion on the BCM’s circuit board was the ‘ghost’ causing all the problems. Replacing it with a VIN-programmed unit like this one solved every single issue in one go, saving the owner from endless diagnostic bills.
Is Your GM Truck or Van Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security or anti-theft light flashing on the dash, possibly causing a no-start condition.
- ✔ Erratic or non-working radio and instrument cluster gauges.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ False warnings on the driver information center (e.g., ‘Door Ajar’).
A Straightforward Guide to Your BCM Swap
Replacing the BCM is a manageable job for a DIYer with basic tools. The key is knowing where to look. For Express and Savana vans, you’ll typically find it in the center of the dashboard. For Silverado and Sierra pickups, it’s usually located under the steering column. Always confirm the location for your specific model.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the Module: Access the BCM by removing any necessary trim panels. In vans, this might involve the glove box or lower dash panels. In trucks, it’s the panel beneath the steering wheel.
- Disconnect and Remove: Carefully unplug the electrical connectors. Most have a locking tab that needs to be depressed. Once disconnected, unbolt or unclip the old BCM and remove it from the vehicle.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Power Up: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all body functions—lights, locks, windows, radio, etc.
Important Post-Installation Information
Our VIN-programming handles the heavy lifting, but some GM vehicles require a final handshake between modules after installation. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a simple sync procedure called ‘Setup SDM Primary Key in BCM’ will be required. This must be done with a professional-grade diagnostic tool to clear the light.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to prevent issues with the traction control system.
Expert Advice: While these procedures aren’t always necessary, they are a standard part of vehicle electronics repair. Always consult a factory service manual or a trusted technician if you are unsure. We believe in transparency so you know exactly what to expect.
Verified Fitment for Your Vehicle
This module is a direct replacement for several part numbers and fits a wide range of GM vehicles. We guarantee compatibility if your vehicle is on this list and your original part number is a match. Part Numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, 10367689.
CHEVROLET EXPRESS 2500 VAN (2003-2007)
CHEVROLET EXPRESS 3500 VAN (2003-2007)
CHEVROLET SILVERADO 1500 PICKUP (2003-2007 Classic)
CHEVROLET SILVERADO 2500 PICKUP (2003-2007 Classic)
CHEVROLET SILVERADO 3500 PICKUP (2003-2007 Classic)
CHEVROLET SSR (2003-2006)
GMC SAVANA 1500 VAN (2003-2007)
GMC SAVANA 2500 VAN (2003-2007)
GMC SAVANA 3500 VAN (2003-2007)
GMC SIERRA 1500 PICKUP (2003-2007 Classic)
GMC SIERRA 2500 PICKUP (2003-2007 Classic)
GMC SIERRA 3500 PICKUP (2003-2007 Classic)
Note: Please check the original listing details for specific options like transmission type or cab configuration that may apply.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We handle all the programming for you before we ship the part. Simply provide us with your vehicle’s VIN during checkout, and it will arrive ready to install with the latest GM software.
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer that acts as the brain for your vehicle’s electronic accessories. It controls functions like power windows, locks, interior/exterior lighting, the security system, and the instrument cluster.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module, which saves you the time and money associated with shipping a core back.
Where is the BCM located on my 2005 Express Van?
On most 2003-2007 Express and Savana vans, the BCM is located behind the dashboard, typically accessible by removing the glove box or lower center dash trim panels.
What happens if my airbag light comes on after installation?
This is a known possibility on some GM vehicles. It simply means the new BCM needs to be electronically introduced to the airbag system (SDM). A qualified mechanic with a high-end scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve it.