Restore Your Vehicle’s Electrical System with a Plug-and-Play Solution
Are you chasing electrical gremlins in your GM truck or van? Intermittent power windows, flickering lights, a security system that acts up, or door locks with a mind of their own 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 seemingly unrelated issues. Stop throwing parts at the problem. This is the direct-fit, reliable solution you’ve been looking for.
This replacement 2003-2007 GM BCM arrives at your door programmed to your vehicle’s specific VIN. We load the latest GM-certified software before it ships, ensuring seamless integration and optimal performance right out of the box. This critical step saves you a trip to the dealership and eliminates hundreds of dollars in programming fees. It’s the most efficient way to get your truck or van back to 100% functionality.
From the Diagnostic Bay: The Case of the Haunted Silverado
I’ll never forget a 2005 Silverado 2500 that came into my shop. The owner was at his wit’s end. One day the radio wouldn’t turn off even with the key out, the next the dome light would stay on all night, draining his battery. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a handful of ‘U’ codes, indicating communication loss with various modules. The common denominator? They all routed through the BCM. A quick check of the data stream confirmed the BCM was erratically dropping offline. We installed a VIN-programmed module just like this one, and every single phantom issue vanished instantly. It’s a textbook example of how a failing 2003-2007 GM BCM can wreak havoc.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Power windows, mirrors, or door locks operate intermittently or not at all.
- ✔ Interior or exterior lights flicker, stay on, or won’t turn on.
- ✔ The factory security system engages randomly or prevents the vehicle from starting (Passlock issues).
- ✔ The radio or instrument cluster behaves erratically.
- ✔ Diagnostic trouble codes (DTCs) like U0140, B1001, or other communication codes are present.
- ✔ The horn honks unexpectedly.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for a confident DIYer. The location varies between trucks (under the steering column) and vans (center of the dash). Always confirm the location for your specific model.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down completely.
- Access the Module: Remove any lower dash panels or trim necessary to gain clear access to the old BCM.
- Disconnect and Remove: Carefully unplug the electrical connectors. Most have a locking tab that needs to be depressed or lifted. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical harnesses. Ensure they click into place.
- Reassemble and Reconnect: Reinstall any trim panels you removed. Reconnect the negative battery terminal.
- Test and Verify: Start the vehicle and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair. Note the post-installation procedures below.
Important Post-Installation Steps
While our programming handles the core functions, some vehicle systems may require a ‘handshake’ with the new BCM. These procedures typically require a bi-directional scan tool.
- Airbag System Sync: If your airbag/SRS warning light is on after installation, a professional will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules.
- Brake Pedal Position (BPP) Relearn: On some models, a BPP sensor relearn may be necessary to ensure correct brake light operation and prevent issues with traction control.
Verified Fitment for Your GM Truck or Van
This module is a direct replacement for part number 15198115 and interchanges with 15167329, 15194169, 15747545, 15136224, 15116065, 15136876, and 10367689. It is guaranteed to fit the following models with the specified options:
- Chevrolet Silverado & GMC Sierra 1500/2500/3500 (2003-2007 Classic): Fits models where the BCM is located under the steering column, with specific exclusions for Crew Cab models and certain transmission options. Please verify against the detailed list.
- Chevrolet Express & GMC Savana 1500/2500/3500 (2003-2007): Fits models where the BCM is located in the center dash, with specific exclusions for the ‘commercial tradesman package’.
- Chevrolet SSR (2003-2006): Direct fitment.
Disclaimer: Always verify your original part number and vehicle options before ordering. Specific procedures can vary by vehicle. Consult a factory service manual or a qualified technician for guidance.
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 cannot ship your order until we receive this information.
Is this a plug-and-play part?
Yes, for all major functions. We program the 2003-2007 GM BCM to your VIN so it controls your vehicle’s specific options correctly. In some cases, minor relearn procedures like for the airbag or brake pedal sensor may be needed post-installation, which require a professional scan tool.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your original module.
What if my airbag light comes on after I install it?
This is a known possibility. The new BCM needs to be electronically introduced to the airbag module (SDM). A repair shop with a capable scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Will this fix my Passlock security system issue?
In many cases, yes. A failing BCM is a very common cause of erratic anti-theft system behavior on these GM vehicles. This programmed replacement is designed to restore proper security system function.