Restore Control and Eliminate Electrical Gremlins
If you’re dealing with bizarre electrical issues in your GM truck or van—like power windows with a mind of their own, flickering dash lights, or a security system that won’t let you start your own vehicle—you’re not alone. These frustrating problems often point directly to a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, when the BCM goes bad, it can cause a cascade of confusing and unpredictable symptoms. This isn’t just an annoyance; it’s a reliability issue that needs a dependable solution.
This isn’t just a replacement part; it’s a complete, ready-to-install fix. We take the hassle and high cost of dealership programming out of the equation. Simply provide your vehicle’s VIN during checkout, and our technicians will flash this BCM with the latest GM software specific to your truck or van. It arrives at your door ready to be installed, saving you time, money, and a trip to the service center. Get your vehicle’s essential functions back to factory-spec performance with a reliable, VIN-programmed 2003-2007 GM BCM.
Case Study: The Silverado That Wouldn’t Cooperate
A 2006 Silverado 2500 rolled into my bay with a laundry list of complaints from the owner. The radio would turn on and off, the driver’s side power window worked intermittently, and the horn would chirp randomly when locking the doors. The owner had already replaced the battery and checked all the fuses. Diagnostics showed a handful of U-codes (communication errors), pointing to a network issue. Instead of just throwing parts at it, we scoped the communication lines at the BCM. We found a noisy, unstable signal coming directly from the module itself. A failing internal processor was flooding the data bus with garbage information, causing all the other modules to act up. Swapping in a VIN-programmed BCM like this one solved every single issue in one go. It’s a classic case where one central component failure creates multiple, seemingly unrelated symptoms.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If your vehicle is experiencing any of the following, a faulty Body Control Module is a likely culprit:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The security or anti-theft system preventing the engine from starting (Security light on).
- ✔ Horn sounding unexpectedly or not working when pressed.
- ✔ Wipers behaving erratically (e.g., won’t turn off).
- ✔ Communication error codes stored, such as U0140, U0155, or other U-series codes.
- ✔ Various body-related fault codes (B-codes) appearing on a scan tool.
A Straightforward Guide to Your 2003-2007 GM BCM Installation
Replacing the BCM is a manageable job for a DIYer with basic tools. The module is typically located under the driver’s side of the dashboard, near the steering column in trucks, or in the center dash area on vans.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes to allow all systems to power down completely.
- Locate the BCM: Remove the necessary lower dash panels to access the module. It’s a black plastic box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket and remove it.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring each one clicks firmly into place.
- Reconnect and Test: Re-install the dash panels, then reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and test all functions: windows, locks, lights, wipers, etc.
Important Post-Installation Information
While this module is programmed to be plug-and-play, some GM vehicles require a ‘handshake’ between new modules. You may need a professional scan tool for these final steps if you encounter a warning light:
- Airbag System Sync: If the airbag (SRS) light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the new BCM with the airbag system. This is a security measure and requires a compatible diagnostic tool.
- Brake Pedal Position Relearn: In some cases, the brake pedal position sensor may need to be recalibrated to ensure proper brake light and stability control function.
Plus, with our service, there is no core charge. You can keep your old module without the hassle of shipping it back.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689 and fits the following models (check your specific options):
- Chevrolet Silverado 1500/2500/3500 (2003-2007 Classic, exc. Crew Cab)
- GMC Sierra 1500/2500/3500 (2003-2007 Classic, exc. Crew Cab)
- Chevrolet Express 1500/2500/3500 Van (2003-2007)
- GMC Savana 1500/2500/3500 Van (2003-2007)
- Chevrolet SSR (2003-2006)
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. The main benefit of our service is that we program the module to your vehicle’s specific VIN before we ship it. This allows for a direct installation without requiring expensive dealer tools for initial setup.
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors most of the non-engine related electronic functions. This includes power windows, locks, interior/exterior lighting, security system, wipers, and more.
Is this a difficult part to install myself?
For someone with basic mechanical skills, it’s a very manageable job. It primarily involves removing a few dash panels and swapping electrical connectors. No special tools are needed for the physical replacement. Please refer to our installation guide above.
What happens if my airbag light comes on after I install it?
This is a normal possibility. It means the new BCM needs to be electronically introduced to the vehicle’s airbag module (SDM). A procedure called ‘Setup SDM Primary Key in BCM’ must be performed with a bi-directional scan tool to clear the light. Many independent repair shops can perform this for you.
What is a core charge? Do I have to send my old part back?
A core charge is a deposit you pay until you return your old part. We do not have a core charge on this item, so you are not required to send your original BCM back to us. You can keep it or dispose of it yourself.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. Your VIN can be found on your driver’s side door jamb sticker or on the dashboard viewable through the windshield.