If you’re dealing with bizarre electrical problems in your GM truck or van, you’ve come to the right place. As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable vehicle into a source of constant frustration. It’s the nerve center for your vehicle’s comfort and security features, and when it goes, it can cause a cascade of confusing issues. This isn’t just a part; it’s the solution to getting your truck’s personality back.
We’re offering a dependable, fully tested Body Control Module, direct replacement for part number 15194169 and other interchangeable numbers listed below. The biggest headache with replacing a BCM is the programming—dealerships often charge a small fortune for it. We take care of that for you. Simply provide your vehicle’s VIN at checkout, and we will flash this module with the latest GM-certified software specific to your truck or van. It arrives at your door ready for installation, saving you time, money, and a trip to the dealer.
From the Diagnostic Bay
I remember a 2006 Silverado 2500 that came into my shop with a classic “parasitic draw” case. The owner had replaced the battery twice, but it would be dead every morning. He’d checked everything. After hooking up my multimeter, I confirmed a significant draw. By pulling fuses one by one, we isolated the circuit to the BCM. The module itself had an internal short, preventing it from going into ‘sleep’ mode and keeping other systems powered on all night. Swapping in a pre-programmed BCM like this one solved the problem instantly. It’s a common failure, and this is the most direct fix.
Is Your Truck or Van Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, a failing BCM is the likely culprit:
- ✔ Power windows, mirrors, or door locks working intermittently or not at all.
- ✔ The security or anti-theft light stays on, preventing the vehicle from starting.
- ✔ Interior dome lights or exterior lights flicker or stay on, draining the battery.
- ✔ The horn honks randomly or the alarm goes off without reason.
- ✔ Dashboard gauges behaving erratically or giving false readings.
- ✔ Remote keyless entry (RKE) has stopped working.
- ✔ Diagnostic trouble codes (DTCs) like U0140, B1001, or other B-series/U-series codes are present.
A Straightforward Guide to BCM Installation
Installing your new BCM is a manageable job for a confident DIYer. While the exact location varies slightly, the process is similar across these GM models.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: On Silverado and Sierra pickups, it’s typically found under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it’s usually behind the center dash panel.
- Remove Trim Panels: Carefully remove any plastic trim or kick panels necessary to access the module.
- Disconnect and Remove: The BCM is held in by a few bolts or clips. Unplug the electrical connectors (they have locking tabs you’ll need to depress) and remove the old module.
- Install the New Module: Seat your new, pre-programmed BCM in the mounting bracket, reconnect all electrical connectors until they click securely, and fasten it in place.
- Reconnect and Test: Reinstall any trim panels you removed, reconnect the battery terminal, and start the vehicle. Test all body functions—windows, locks, lights, etc.—to confirm the repair.
Important Post-Installation Steps
Because this 2003-2007 Sierra 1500 BCM is the central communicator, a couple of quick relearn procedures might be necessary after installation. This is normal and ensures all systems work together correctly.
- Airbag System Sync: If your airbag warning light is on after installation, a technician will need to perform a “Setup SDM Primary Key in BCM” procedure with a capable scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function properly.
Disclaimer: We are committed to providing a seamless experience, but vehicle systems can be complex. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This module is a guaranteed fit for the following vehicles, replacing part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689.
Chevrolet Silverado/GMC Sierra 1500/2500/3500 (2003-2007 Classic): Fits models (excluding Crew Cab) where the BCM is located under the steering column. Please verify your specific options (e.g., transmission type) against the detailed fitment list.
Chevrolet Express/GMC Savana 1500/2500/3500 (2003-2007): Fits vans where the BCM is in the center dash (excluding commercial tradesman package on some years).
Chevrolet SSR (2003-2006): Direct fitment for all models.
Frequently Asked Questions
Do I have to get this BCM programmed by a dealer?
No. We handle the programming for you before we ship it. Just provide your vehicle’s VIN during checkout, and it will arrive ready to install, saving you hundreds in dealership fees.
What is a VIN and where do I find it?
The VIN is your 17-digit Vehicle Identification Number. You can find it on your driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Is there a core charge? Do I need to send my old BCM back?
There is absolutely 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.
Why is my airbag light on after installing the new BCM?
This is a normal security feature. The new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key’ procedure in a few minutes to turn off the light.
Will this 2003-2007 Sierra 1500 BCM fix my no-start problem?
It can, especially if the security light is on. The BCM is a key part of the Passlock/Passkey anti-theft system. If it fails, it can prevent the engine from starting. This pre-programmed module restores that critical function.