Tired of Chasing Electrical Gremlins in Your GM Truck or Van?
Are you dealing with flickering lights, power windows with a mind of their own, or a security light that won’t turn off? As a technician with over two decades of experience, I’ve seen these exact issues countless times. The culprit is almost always a failing Body Control Module (BCM). This isn’t just an annoyance; a faulty BCM can lead to no-start conditions, leaving you stranded. It’s the central command for your vehicle’s body electronics, and when it goes, it creates a cascade of frustrating, unpredictable problems.
Forget the expensive trip to the dealership and the days of downtime. We offer a direct, reliable solution: a genuine GM Body Control Module, part number 15116065, delivered to your door fully programmed to your vehicle’s specific VIN. We flash it with the latest GM-certified software before it ships, so you can skip the costly programming fees and complex procedures. This is the definitive fix for your 2003-2007 GM BCM issues, designed to restore your vehicle’s functionality and your peace of mind.
Case Study: A Tricky Diagnosis
Just last month, a 2006 Silverado 2500 was towed to my shop. The owner was frustrated—the radio would turn on and off randomly, the dome light stayed on, and sometimes the truck wouldn’t start, just a single click. He had already replaced the battery and alternator. After connecting my diagnostic scanner, I saw a dozen communication codes pointing in different directions. Experience told me to look at the BCM. A quick check of the data stream showed erratic voltage readings from the module. We installed one of our pre-programmed BCMs, and within an hour, every single ghost in his machine was gone. This is a classic failure pattern for these vehicles, and a new, properly programmed BCM is the only correct fix.
Is Your GM Truck or Van Showing These Signs?
- ✔ Intermittent or non-functional power windows, door locks, or interior lights.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Erratic instrument cluster behavior, such as gauges dropping to zero.
- ✔ Headlights or taillights acting strangely (staying on or not turning on).
- ✔ False warnings on the driver information center (e.g., “Service 4WD System”).
- ✔ Radio or climate control systems not working correctly.
- ✔ Complete loss of communication, resulting in a no-start condition.
Your Straightforward BCM Installation Guide
Installing your new 2003-2007 GM BCM is a manageable job for a confident DIYer. The location varies slightly between trucks (under the steering column) and vans (center of the dash), but the process is similar.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Remove the necessary trim panels to gain access to the BCM. On trucks, this is typically the lower dash panel beneath the steering wheel. On vans, it’s behind the center dash/radio area.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. 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 the electrical connectors. You should hear a click as they lock into place.
- Reassemble and Reconnect: Reinstall the trim panels you removed. Reconnect the negative battery terminal.
- Perform Final Procedures: Follow the critical post-installation steps below to ensure all systems, including safety features, are working correctly.
Important Final Steps After Installation
Once your new BCM is installed, a couple of crucial procedures are required to ensure full system integration and safety. These are not optional.
- Airbag System Reset: The airbag warning light will likely be on. You must perform the ‘Setup SDM Primary Key in BCM’ procedure using a bi-directional diagnostic tool. This re-establishes communication between the new BCM and the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Sensor Relearn: Some vehicles may require a ‘Brake Pedal Position Sensor Relearn’ procedure. This ensures the BCM accurately reads the brake pedal input, which is critical for brake light operation and stability control systems.
Note: If you are not equipped with a professional-grade scan tool capable of these functions, we strongly advise seeking assistance from a qualified mechanic to complete these final steps.
Verified Fitment for Your 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 vehicles including:
- Chevrolet Silverado 1500/2500/3500 (2003-2007 Classic) – Specific options apply, primarily non-Crew Cab models.
- GMC Sierra 1500/2500/3500 (2003-2007 Classic) – Specific options apply, primarily non-Crew Cab models.
- Chevrolet Express 1500/2500/3500 Van (2003-2007) – Specific options apply.
- GMC Savana 1500/2500/3500 Van (2003-2007) – Specific options apply.
- Chevrolet SSR (2003-2006)
Please use the detailed fitment list at the top of the page to confirm compatibility with your exact year, model, and options before ordering your 2003-2007 GM BCM.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors most of the non-engine-related electronic functions. This includes power windows, door locks, interior/exterior lighting, the security system, wipers, and the instrument cluster.
Is this BCM really plug-and-play?
Yes, for the most part. We pre-program the module to your vehicle’s VIN, which handles the most difficult part of the installation. However, you will still need to perform the ‘Setup SDM Primary Key’ and potentially a ‘Brake Pedal Relearn’ procedure with a proper scan tool to finalize the installation and clear any safety system warnings.
How do I provide my VIN number?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it. You can find your VIN on your vehicle’s registration, insurance card, or on the driver’s side dashboard viewable through the windshield.
Will this fix my no-start problem?
If your no-start issue is caused by the security system (e.g., a flashing security light), a faulty BCM is a very common cause. This programmed module will resolve BCM-related security lockouts. However, a no-start can have other causes like a bad starter or fuel pump, so proper diagnosis is always recommended.
Do I need to send my original BCM to you?
No, there is no core charge or need to send us your old part. This is a direct purchase of a replacement BCM that we program and ship to you.