Restore Your Vehicle’s Electrical System with a Reliable, Pre-Programmed BCM
Are you dealing with frustrating electrical gremlins in your GM truck or van? Flickering interior lights, power windows with a mind of their own, or a security light that won’t turn off 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 cascade of confusing and annoying problems. This isn’t just an inconvenience; it can affect your vehicle’s security and daily usability. This replacement BCM is your direct, hassle-free solution, arriving at your door programmed with the latest GM software specifically for your vehicle’s VIN.
A Technician’s Notebook: The Silverado with a Ghost
I remember a 2006 Silverado 2500 that came into my bay with a list of problems that sounded like a ghost was in the machine. The dome light would randomly turn on while driving, the driver’s side power window worked intermittently, and the horn would chirp when locking the doors sometimes, but not others. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a handful of U-codes (communication errors) pointing to a network issue. Instead of chasing individual components, experience pointed me straight to the BCM. These modules are the traffic cops for dozens of electronic signals. When they start to fail, they send scrambled messages, creating chaos. We installed a VIN-programmed BCM, and instantly, all the bizarre issues were gone. It’s a perfect example of how one part can solve a dozen problems.
Is Your Truck or Van Showing These Signs?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely culprit. Over my 20 years in the shop, these are the most common symptoms I’ve diagnosed that lead back to a faulty 2003-2007 GM BCM.
- ✔ Power windows or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system light is illuminated, or the vehicle won’t start due to a false security trigger.
- ✔ The horn sounds at random or doesn’t work.
- ✔ Wipers behaving unpredictably.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ Inaccurate fuel gauge readings or other instrument cluster issues.
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a confident DIYer or a quick task for any professional. Our pre-programming service eliminates the most difficult step—the trip to the dealership. Follow these general steps for a successful installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most Silverado and Sierra pickups, the BCM is located under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it’s typically 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 old BCM and remove it from the vehicle.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, locks, windows, wipers, and horn to ensure everything is working correctly.
Important Post-Installation Steps
After installing your new 2003-2007 GM BCM, a couple of additional procedures may be required depending on your specific vehicle and its options. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is on after installation, the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor relearn is necessary to ensure brake lights and traction control function properly. This can also be performed with a compatible diagnostic tool.
Disclaimer: Vehicle systems vary. Always consult a factory service manual or a qualified technician for procedures specific to your vehicle.
Verified Vehicle Compatibility
This module is a direct replacement for several part numbers, including 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is guaranteed to fit the following models with the specified options. Please check your vehicle details carefully.
CHEVROLET EXPRESS/GMC SAVANA 1500/2500/3500 VANS 2003 (Center Dash)
CHEVROLET EXPRESS/GMC SAVANA 1500/2500/3500 VANS 2004-2007 (Center Dash, w/o commercial tradesman package)
CHEVROLET SILVERADO/GMC SIERRA 1500 PICKUP 2003-2006 (Under steering column, exc. Crew Cab)
CHEVROLET SILVERADO/GMC SIERRA 1500 PICKUP 2007 Classic Style (Under steering column, exc. Crew Cab)
CHEVROLET SILVERADO/GMC SIERRA 2500/3500 PICKUP 2003-2005 (Under steering column, exc. Crew Cab)
CHEVROLET SILVERADO/GMC SIERRA 2500/3500 PICKUP 2006 (Under steering column, exc. Crew Cab, check transmission type)
CHEVROLET SILVERADO/GMC SIERRA 2500/3500 PICKUP 2007 Classic Style (Under steering column, exc. Crew Cab, check transmission type)
Frequently Asked Questions
Why do you need my VIN?
We require your Vehicle Identification Number (VIN) to program the BCM with the exact software and settings for your truck or van’s specific options. This ensures it works correctly right out of the box, saving you a costly trip to the dealer for programming.
Is this a simple plug-and-play installation?
Yes, for the most part. Because we pre-program the module, the physical installation is plug-and-play. However, as noted, some vehicles may require an additional relearn procedure for the airbag or brake systems, which needs a professional scan tool.
Do I need to return my old BCM?
No. There is absolutely no core charge for this part. You can keep your old module, which can be helpful if you ever need to reference its original part number.
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), the encoder motor, or the dash switch. A full diagnostic scan is the best way to pinpoint the exact cause.
What makes this better than a used one from a junkyard?
A used BCM will be programmed for the donor vehicle’s VIN and options, meaning it will not work correctly in your truck. It would still require expensive dealership programming. Our BCM arrives fully programmed for your specific vehicle with the latest GM software updates, ensuring a reliable, long-term fix.