Restore Your Vehicle’s Electrical System with a Reliable, Programmed BCM
Are you chasing electrical gremlins in your GM truck or van? Flickering 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 frustrating and unpredictable problems. I’ve spent years in the bay diagnosing these exact issues, and replacing the BCM is often the definitive fix. This isn’t just about convenience; it’s about restoring the dependable operation of your vehicle’s core functions.
We take the guesswork and high dealership costs out of the equation. This BCM, part number 15167329, is a direct-fit replacement for a wide range of GM vehicles. The best part? We program it specifically to your vehicle’s VIN before we ship it. This means it arrives loaded with the latest GM software, ready for a straightforward installation. You get a reliable solution without the need for expensive dealer-only programming tools. This is the smart, effective way to get your truck or van back to 100%.
A Technician’s Notebook: The Intermittent No-Start
I once had a 2005 Silverado 2500 towed in that would randomly refuse to start. The owner had already replaced the battery and starter. When it got to my bay, it started right up. Classic intermittent issue. After checking for codes, I found several U-codes (communication errors) pointing to the BCM. The BCM controls the Passlock security system. When it fails, it can mistakenly think the truck is being stolen and disable the fuel injectors, causing a crank-no-start condition. A new, properly programmed 2003-2007 GM BCM solved the problem for good. It’s a textbook example of how a BCM failure can mimic other, more common issues.
Is Your Truck Showing These Symptoms?
- ✔ Erratic or non-functional power windows and door locks.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security or anti-theft light is illuminated on the dash.
- ✔ A ‘Service 4WD’ message appearing for no reason.
- ✔ Unexplained battery drain that leaves you with a dead battery overnight.
- ✔ Communication error codes, often in the U-series (e.g., U0140, U0155).
- ✔ The horn sounding off randomly or not working when needed.
A Straightforward Guide to BCM Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all modules to power down completely.
- ✔ 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 Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. These are usually held in by clips or a few screws.
- ✔ Disconnect and Remove: The BCM has several large multi-pin electrical connectors. Press the release tabs firmly and pull the connectors straight out. Then, unbolt or unclip the old BCM from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click into place.
- ✔ Post-Installation Procedures: Reconnect the battery. While the BCM is pre-programmed, some vehicles may require a ‘Brake Pedal Position Relearn’ or an ‘Airbag System Sync’ if the corresponding warning lights appear. This can often be done with a high-end diagnostic tool.
- ✔ Verify Operation: Start the vehicle and test all functions controlled by the BCM: lights, locks, windows, horn, and radio to confirm the repair was successful.
Will This Fit My Truck or Van?
This module is a guaranteed fit for the following vehicles and configurations. Please verify your part number against our list of compatible numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, 10367689.
- Chevrolet SSR: 2003-2006
- Chevrolet/GMC Express/Savana 1500, 2500, 3500 Vans: 2003-2007 (See detailed fitment notes)
- Chevrolet Silverado 1500, 2500, 3500 Pickups: 2003-2007 (Classic Body Style, Non-Crew Cab Models)
- GMC Sierra 1500, 2500, 3500 Pickups: 2003-2007 (Classic Body Style, Non-Crew Cab Models)
Note: Fitment can depend on transmission type (MT/AT) and specific packages. Please match your original part number or contact us with your VIN to confirm compatibility.
Frequently Asked Questions
Is this BCM really plug-and-play?
Yes! Because we program the module to your vehicle’s VIN before shipping, it eliminates the need for you to have it programmed at a dealership. In most cases, you can install it and be on your way. Some vehicles may require simple relearn procedures as noted in our installation guide.
What information do you need from me?
After you complete your purchase, we will need the 17-digit Vehicle Identification Number (VIN) from your truck or van. This allows us to load the correct software and vehicle-specific options for a seamless installation.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your old module, which is helpful if you ever want to double-check the original part number.
What does a Body Control Module (BCM) actually do?
The BCM is like a central computer for all the non-engine related electronics in your vehicle. It controls functions like the power windows, power locks, interior and exterior lighting, security system, horn, and even the warning chimes.
My airbag light is on after installation. What should I do?
This is an uncommon but possible scenario. It means the new BCM needs to be synced with the airbag’s computer (SDM). A professional mechanic with a capable diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Will this fix my ‘Service 4WD’ light?
In many cases, yes. The BCM communicates with the transfer case control module (TCCM). A failing 2003-2007 GM BCM can send bad data, causing a false ‘Service 4WD’ warning. If the TCCM itself is fine, this BCM will likely solve that issue.