Restore Full Functionality to Your GM Van or Truck
Is your work van or truck plagued by baffling electrical issues? Power windows with a mind of their own, door locks that don’t respond, or interior lights that flicker for no reason? These aren’t just annoyances; they’re 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. This replacement BCM, part number 15198115, is the reliable, straightforward solution to get your vehicle’s accessories working like new again.
We take the guesswork and high cost out of the repair. Unlike a blank module from a dealer that requires expensive programming tools, this BCM arrives at your door fully programmed with the latest GM software, specifically matched to your vehicle’s VIN. This means a simpler installation process, saving you time and a costly trip to the dealership. It’s the perfect fix for both seasoned mechanics and dedicated DIYers looking to restore their vehicle’s integrity.
I remember a 2006 Express 3500 that came into my bay with a list of complaints that seemed unrelated. The driver said the radio would cut out, the dome light wouldn’t turn off, and the power locks worked intermittently. He’d already replaced the battery and checked fuses. A scan showed a handful of U-codes, indicating a communication breakdown. This is a tell-tale sign. The BCM acts as the network manager for these systems. After confirming power and ground to the module, we swapped in a pre-programmed BCM. Every single issue vanished instantly. It’s a reminder that what looks like multiple small problems is often one central failure.
Common Signs of a Failing BCM
If your vehicle is experiencing these symptoms, a failing BCM is the likely culprit. Replacing it with our programmed unit can solve these issues in one go.
- âś” Erratic or non-functional power windows, door locks, and mirrors.
- âś” Interior or exterior lights staying on or not turning on at all.
- âś” Horn sounding randomly or not working when pressed.
- âś” Security system faults or the “Service Theft System” message appearing.
- âś” Wipers operating incorrectly or activating on their own.
- âś” Communication-related Diagnostic Trouble Codes (DTCs), often in the U-code range (e.g., U0140, U0155).
- âś” Intermittent no-start conditions where the starter doesn’t engage.
A Straightforward Guide to BCM Installation
Installing your new 2003-2007 Express 3500 BCM is a manageable job. The location varies between vans and trucks, so confirm your model below. Always exercise caution when working with vehicle electronics.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge.
- Locate the BCM: On Express & Savana vans, the BCM is typically found behind the center dash panel. On Silverado & Sierra pickups, it’s usually located under the driver’s side of the dashboard, near the steering column.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be pressed to release. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same position. Securely plug in all the electrical connectors, making sure they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to confirm the repair.
Post-Installation Checks
Because this 2003-2007 Express 3500 BCM is pre-programmed, most vehicles will be ready to go. However, in some cases, a vehicle’s specific configuration may require a relearn procedure.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This syncs the new BCM with the airbag system and requires a professional-grade scan tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure correct brake light and traction control operation.
- No Core Charge: You are not required to return your old module. This saves you the hassle and expense of a core return.
Will This Fit My GM Vehicle?
This BCM is a direct replacement for a wide range of GM trucks and vans. It replaces part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please verify your vehicle from the list below:
- Chevrolet Express / GMC Savana 1500/2500/3500 Vans (2003-2007): Located in the center dash, typically for models without the commercial tradesman package in later years.
- Chevrolet Silverado / GMC Sierra 1500/2500/3500 Pickups (2003-2007 Classic): Located under the steering column, for models excluding Crew Cab. Note specific transmission options for some years.
- Chevrolet SSR (2003-2006): Body Control (BCM).
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and vehicle-specific options from GM. This ensures all features your vehicle came with, like power locks or keyless entry, work correctly right out of the box.
Is this a plug-and-play part?
Yes, for the vast majority of vehicles, it is. Because we pre-program it to your VIN, you can simply install it, and it will function correctly. In rare cases, a security or airbag system relearn may be needed, which requires a scan tool.
Do I need to return my old BCM?
No. This purchase has no core charge. You can keep your original module, saving you the time and money associated with return shipping.
Will this fix my ‘Service Theft System’ light?
A faulty BCM is a very common cause of this warning. While not a guarantee for every situation, replacing a failing BCM with this programmed unit often resolves security system communication errors and turns off the light.
What tools are needed for the installation?
Basic hand tools are all that’s required for the physical installation, typically a socket set and some panel removal tools to access the BCM. No special programming tools are needed since we handle that for you before shipping.