Tired of Chasing Electrical Gremlins in Your GM Truck?
If you own a 2003-2007 GM truck or SUV, you know it’s a workhorse. But when the electronics start acting up, it can be incredibly frustrating. Are your power windows refusing to cooperate? Do the door locks have a mind of their own? Is your HVAC system blowing hot air on a summer day, or is the security light keeping your truck from starting? Before you start replacing individual switches and motors, the real culprit is often the Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a failing BCM can cause a cascade of confusing and seemingly unrelated problems. This is the definitive solution to restore order and reliability.
This module, part number 15064149, is a direct-fit replacement for a wide range of General Motors vehicles. What makes our solution special is the included Cloning Service. We transfer the critical data from your original BCM to this replacement unit. This means no expensive trips to the dealership for programming. It arrives at your door ready for a simple, plug-and-play installation, pre-configured to your truck’s specific VIN and options. It’s the fastest, most reliable way to get your truck back to 100% functionality.
A Technician’s Notebook
I remember a 2005 Silverado 2500 that came into the shop with a classic “phantom problem.” The owner complained of an intermittent no-start and a dead battery every few days. He’d already replaced the battery and alternator. We checked for parasitic draws and found a significant one, but it was inconsistent. After hours of tracing wires, we focused on the BCM. On these trucks, I’ve seen internal BCM faults fail to let the communication networks go to ‘sleep’ after the key is off, causing a persistent power draw that kills the battery. We swapped in a cloned BCM, and the draw vanished. The customer called a week later, thrilled that his truck was finally reliable again. It’s a textbook example of how a faulty 2003-2007 Silverado 2500 BCM can mimic other failures.
Diagnosing a Defective Body Control Module
A failing BCM doesn’t always throw a simple check engine light. The symptoms are often more subtle and bizarre. If your truck is experiencing any of the issues below, a faulty BCM is the most likely cause. Over my 20+ years in diagnostics, these are the most common complaints that lead back to this single component.
- ✔ Electrical features working intermittently (power windows, locks, mirrors).
- ✔ HVAC controls are unresponsive, or the blower motor won’t turn on or off.
- ✔ The security or anti-theft light is on, often causing a no-start condition.
- ✔ An airbag warning light is illuminated, sometimes with a communication DTC like B1001.
- ✔ Interior or exterior lights (headlights, dome lights, dash lights) flicker or fail to work.
- ✔ The windshield wipers operate erratically or not at all.
- ✔ A host of communication-related Diagnostic Trouble Codes (DTCs) are present.
A Straightforward Guide to Installation
You don’t need to be a master mechanic to replace your BCM. The process is simple and typically takes less than 15 minutes with basic hand tools. Our cloning service makes this a true plug-and-play repair.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and allow the systems to reset.
- Locate the BCM: On most Silverado, Sierra, and SUV models, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black plastic box with several large multi-pin connectors.
- Remove the Old Module: Carefully unplug the electrical connectors. They have release tabs that need to be depressed. Once unplugged, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Seat the replacement BCM into the mounting bracket and securely plug in all the electrical connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all body functions—windows, locks, lights, wipers, and HVAC—to confirm the repair was successful.
- Post-Install Checks: In some cases, a ‘Setup SDM Primary Key in BCM’ or ‘Brake Pedal Position Relearn’ procedure may be needed if you have an airbag light or brake system warnings. This requires a professional-grade scan tool.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 10383536, 15116066, 15136225, 15136877, 15137393, 15137394, 15137395, 15137396, 15198116, 15257043, 15257044, 15257045, 15257046, 10367690, 15064149, and 15194170. It fits a wide range of models, including:
GMC: Sierra 1500/2500/3500 & Denali (03-07 Classic), Yukon & Yukon XL 1500/2500 (03-06), Savana Van (04-07 w/ PRP package)
Cadillac: Escalade, ESV, EXT (03-06)
Hummer: H2 (03-07)
Note: For 2007 models, this fits the ‘Classic’ body style with the creased door skin, not the new body style. Please verify your part number to ensure compatibility.
Frequently Asked Questions
What is a Cloning Service?
Our Cloning Service involves transferring the specific vehicle data (like VIN, mileage, and security information) from your original BCM to the replacement unit. This makes the new part plug-and-play, avoiding the need for expensive dealership programming.
Do I need to send my original BCM to you?
Yes. For the cloning process to work, you must send us your original module after placing your order. We will perform the service and ship both your original and the ready-to-install replacement back to you.
Is there a core charge?
No, there is no core charge. We always return your original module along with the newly programmed replacement, so you don’t have to worry about extra fees or core returns.
Will this fix my airbag light?
It can. BCM failure often causes communication loss with the airbag system (SDM), triggering the light. After installing the cloned BCM, the light should go out. If it remains on, a simple ‘Setup SDM Primary Key in BCM’ procedure with a pro-level scan tool will be required to sync the modules.
What if my original BCM is completely dead or missing?
If your module is non-communicative or lost, we can often still program a replacement using your vehicle’s VIN. Please contact our support team with your VIN to confirm before ordering.