Restore Your GM Truck’s Electrical System with a VIN-Programmed BCM
Are you tired of chasing electrical gremlins in your 2003-2007 GM truck or van? Intermittent power windows, flickering lights, a security system that won’t let you start the engine, or a dashboard that lights up with random warnings are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can make your reliable workhorse feel unpredictable. This is the simple, dependable solution you’ve been looking for.
This isn’t just a replacement part; it’s a complete, ready-to-install fix. We take the guesswork and dealership hassle out of the equation. Simply provide us with your vehicle’s VIN after purchase, and our experts will program this BCM with the latest, most stable software directly from GM. It arrives at your door ready to be installed, saving you hundreds of dollars in dealership programming fees and diagnostic headaches. This is the most efficient way to get your truck or van functioning correctly again.
Case Study: A Tricky Diagnosis
I recently had a 2006 Silverado 2500 in the shop that was driving the owner crazy. The radio would turn on and off by itself, the driver’s side power window only worked sometimes, and occasionally the truck wouldn’t start, showing a ‘Security’ light. The owner had already replaced the battery and checked grounds. A scan showed a U0140 (Lost Communication With Body Control Module) code that would come and go. Instead of spending hours tracing wires for an intermittent fault, we installed one of our pre-programmed BCMs. The entire job, including the physical swap, took less than an hour. All the bizarre electrical issues were gone instantly. The pre-programming saved my shop time and saved the customer a massive bill.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system preventing the engine from starting (Security light on).
- ✔ Erratic behavior from the radio or instrument cluster gauges.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0155, or U0164.
- ✔ The horn honking randomly or the panic alarm activating without cause.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable task for a DIYer with basic tools. While the exact location can vary between trucks and vans, the general process is similar.
- Safety First: Always 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 behind the center dash panel.
- Remove Trim Panels: Carefully remove any plastic trim or lower dash panels needed 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, so be gentle) and remove the old module.
- Install the New BCM: Mount your new, pre-programmed BCM in place and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock in.
- Reconnect and Test: Reassemble the dash panels and reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and test your lights, locks, windows, and other accessories to confirm proper function.
Important Post-Installation Information
Because this Programmed GM BCM 15198115 is the central computer for body functions, a couple of simple relearn procedures may be needed after installation. This is normal and ensures all systems communicate correctly.
- Airbag System Sync: In some cases, the airbag warning light may illuminate after installation. This means the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function to clear the light.
- Brake Pedal Position (BPP) Relearn: To ensure accurate brake light operation and stability control performance, a BPP sensor relearn might be necessary. This procedure can often be completed with a capable bi-directional scan tool.
Disclaimer: Vehicle systems vary. Always have a factory service manual for your specific model on hand or consult a certified technician if you are unsure about any step.
Verified 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 a wide range of models:
- Chevrolet Silverado 1500/2500/3500 (2003-2007, see fitment table for specific options)
- GMC Sierra 1500/2500/3500 (2003-2007, see fitment table for specific options)
- Chevrolet Express 1500/2500/3500 Van (2003-2007, see fitment table for specific options)
- GMC Savana 1500/2500/3500 Van (2003-2007, see fitment table for specific options)
- Chevrolet SSR (2003-2006)
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We will program the module specifically for your vehicle before shipping it out.
Is this part truly plug-and-play?
Yes, the module is programmed to your VIN, so it is ready for installation right out of the box. In some cases, minor relearn procedures like for the airbag or brake pedal sensor may be needed, which is standard for this type of repair.
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 is helpful if you ever need to reference it.
Will this fix my ‘Service 4WD’ light?
While the BCM communicates with many systems, a ‘Service 4WD’ message is more commonly caused by the Transfer Case Control Module (TCCM) or the encoder motor/sensor. It’s best to have the vehicle properly diagnosed to pinpoint the exact cause.
What tools are required for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn require a professional-grade bi-directional scan tool. Many independent repair shops have this equipment if you are unable to perform the procedures yourself.