Restore Your Van’s Electrical Systems with a Reliable, Programmed BCM
Are you battling bizarre electrical issues in your 2003-2007 Chevrolet Express 1500 Van or another compatible GM vehicle? From power windows that have a mind of their own to a security light that won’t turn off, a failing Body Control Module (BCM) is often the culprit. As the central command for your vehicle’s body electronics, its failure can cause a cascade of frustrating problems. This replacement BCM, part number 15136224, is the definitive solution to get your truck or van back to 100% operational status without the exorbitant cost and hassle of a dealership visit.
We take the guesswork and complexity out of the repair. Before this module ships, we program it with the latest GM software updates using the unique Vehicle Identification Number (VIN) you provide. This ensures that when it arrives, it’s a direct-fit, plug-and-play solution tailored specifically to your vehicle’s factory options. You get a component that communicates flawlessly with your vehicle’s other systems right out of the box.
A Technician’s Notebook
I remember a 2006 Express work van that came into my bay with a classic ‘parasitic draw’ complaint. The owner had replaced the battery twice in three months. Every morning, it was dead. After checking the usual suspects, I hooked up an ammeter and started pulling fuses. The draw dropped significantly when I pulled the BCM fuse. The internal circuitry of the original BCM had failed, preventing it from entering ‘sleep mode’ and keeping other modules awake all night. Installing a properly programmed BCM didn’t just fix the dead battery; it also resolved intermittent radio and interior light problems the owner had learned to live with. This single part restored the van’s reliability completely.
Common Signs of a Failing GM BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ The security or anti-theft light stays on, potentially causing a no-start condition.
- ✔ Interior or exterior lights flickering, staying on, or failing to work.
- ✔ Unexplained battery drain (parasitic draw) that kills your battery overnight.
- ✔ Inconsistent or non-functional windshield wipers and washers.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors (U-codes) or body systems (B-codes).
- ✔ Horn honking randomly or not working when pressed.
Your Straightforward BCM Installation Guide
Installing your new 2003-2007 Express 1500 BCM is a manageable job for a confident DIYer. In Express and Savana vans, the BCM is typically located in the center of the dashboard. In Silverado and Sierra pickups, it’s found under the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes before beginning work. This prevents electrical shorts and allows modules to power down.
- Access the Module: Carefully remove the necessary dash panels or lower steering column covers to gain access to the old BCM.
- Disconnect and Remove: Note the orientation of the electrical connectors. Press the release tabs firmly and disconnect all wiring harnesses from the old BCM. Then, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location. Reconnect all wiring harnesses, ensuring each one clicks securely into place.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Relearns (If Needed): Start the vehicle and check all functions. In some cases, post-install procedures are necessary. If your airbag light is on, a ‘Setup SDM Primary Key in BCM’ procedure is required using a pro-level scan tool. A Brake Pedal Position relearn may also be needed for proper brake light and traction control function.
Disclaimer: While this is a general guide, specific steps can vary. Always consult a factory service manual for your exact vehicle for detailed instructions and torque specs.
Will This Fit My GM Truck or Van?
This Body Control Module is a direct replacement for several part numbers and fits a wide range of GM vehicles. Please verify your part number and vehicle model against this list to ensure compatibility. This module replaces part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689.
Fitment Includes (but not limited to):
- Chevrolet Express 1500/2500/3500 Vans (2003-2007)
- GMC Savana 1500/2500/3500 Vans (2003-2007)
- Chevrolet Silverado 1500/2500/3500 Pickups (2003-2007 Classic)
- GMC Sierra 1500/2500/3500 Pickups (2003-2007 Classic)
- Chevrolet SSR (2003-2006)
Note: Please refer to the detailed fitment list at the top of the page for specific options and exclusions (e.g., Crew Cab, transmission type).
Frequently Asked Questions
Do I need to send my old BCM back?
No. This purchase comes with no core charge. You can keep your original module, which can be helpful for future reference if needed.
What is VIN programming and why is it important?
VIN programming involves loading your vehicle’s specific software and options (like power windows, keyless entry, etc.) onto the BCM. This ensures it works correctly with your truck or van’s unique configuration, avoiding the need for expensive dealer programming.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot program and ship your BCM without it. You can typically find your VIN on your driver’s side dashboard (visible through the windshield) or on your vehicle’s registration.
Will this fix my ‘Service 4WD’ light?
While the BCM communicates with many systems, a ‘Service 4WD’ message is more commonly related to the Transfer Case Control Module (TCCM) or the encoder motor. It’s best to have the vehicle scanned for specific trouble codes before ordering parts.
My airbag light is on after installation. What do I do?
This is a known possibility. The BCM and the airbag system (SDM) need to be electronically ‘shaken hands’. A technician with a professional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules and turn off the light.