Tired of Your Truck’s Mysterious Electrical Problems?
As a technician with over two decades of experience, I’ve seen it all. Power windows that won’t budge, interior lights that flicker randomly, a security light that stays on, or a truck that simply refuses to start. These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central command for your vehicle’s body electronics, and when it goes, it can create a host of frustrating and unpredictable issues. Stop chasing electrical gremlins and get the definitive solution with our pre-programmed 2003-2007 GM BCM.
This isn’t just a replacement part; it’s a restoration of your vehicle’s reliability. We take the guesswork and dealer hassle out of the equation. Simply provide us with your vehicle’s VIN at checkout, and our experts will program this module with the latest GM software specific to your truck or van. It arrives at your door ready for installation, saving you a costly trip to the dealership for programming.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting behavior (e.g., lights staying on or not turning on).
- ✔ A persistent anti-theft or security light on the dashboard.
- ✔ Unexplained battery drain that leaves you stranded.
- ✔ Inoperative radio or climate control functions.
- ✔ Horn sounding unexpectedly or not working at all.
- ✔ False warnings on the driver information center.
A Technician’s Notebook: The 2006 Sierra That Wouldn’t Cooperate
Just last month, a 2006 Sierra 2500 was towed into my bay. The owner was at his wit’s end. The horn would blare randomly, the driver’s side window was stuck down, and the battery was dead every morning. He had already replaced the battery and the alternator to no avail. My initial scan showed a flood of communication errors between various modules. This immediately pointed me to the network’s traffic cop: the BCM. After confirming power and ground to the module were good, the diagnosis was clear. The internal logic of the original 2003-2007 GM BCM had failed. We installed one of our VIN-programmed units, performed the quick post-install relearns, and the truck’s electrical systems were back to functioning perfectly. It’s a common failure, and this part is the correct, long-term fix.
A Straightforward Guide to Your BCM Installation
Replacing the BCM is a manageable job for a DIY enthusiast. Follow these steps carefully for a successful installation. The BCM is typically located under the steering column in trucks or in the center dash area on vans.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes before beginning work.
- Locate the BCM: On Silverado and Sierra pickups, remove the lower dash panel beneath the steering wheel to access the module. On Express and Savana vans, you will likely need to remove parts of the center dash trim to find it.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Battery: Reattach the negative battery terminal.
- CRITICAL – Post-Installation Procedures: Do not skip this step! Your vehicle will require a couple of key procedures to finalize the installation. While specific steps can vary, you will need a capable diagnostic scan tool to perform the ‘Setup SDM Primary Key in BCM’ to clear the airbag light. Some vehicles may also require a Brake Pedal Position Sensor recalibration. Failure to perform these steps can result in warning lights and improper system function.
Guaranteed Fitment for Your GM Truck or Van
This Body Control Module is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is compatible with the following vehicles, subject to the specific options listed:
- Chevrolet Silverado 1500/2500/3500 (2003-2007 Classic)
- GMC Sierra 1500/2500/3500 (2003-2007 Classic)
- Chevrolet Express 1500/2500/3500 Vans (2003-2007)
- GMC Savana 1500/2500/3500 Vans (2003-2007)
- Chevrolet SSR (2003-2006)
Please refer to the detailed fitment list in the original product data to confirm compatibility with your specific year, model, and options (e.g., transmission type, cab configuration).
Frequently Asked Questions
What exactly does a Body Control Module (BCM) do?
The BCM acts as the brain for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, interior/exterior lights, the security system, wipers, and the horn. When it fails, these systems can become erratic.
Why do you need my VIN to program the BCM?
Every GM vehicle has a unique set of options (RPO codes) associated with its Vehicle Identification Number (VIN). We use your VIN to load the exact software and settings your specific truck or van needs. This ensures all features work correctly and makes the installation process much smoother.
Is this a difficult part for a DIYer to replace?
The physical replacement is straightforward for someone with basic mechanical skills. It involves removing a few dash panels and unplugging connectors. The most critical part is performing the post-installation procedures with a proper scan tool, which is essential for safety systems like the airbags.
What happens if I don’t perform the airbag and brake relearn procedures?
If you don’t perform the ‘Setup SDM Primary Key’ procedure, the airbag warning light will remain on, and the supplemental restraint system may not function correctly in an accident. The brake pedal relearn ensures proper communication for brake light activation and stability control systems. These are critical safety steps.
Will this fix my no-start problem?
It can. The BCM is a key part of the vehicle’s anti-theft system (Passlock/Passkey). If the BCM fails, it can prevent the vehicle from recognizing the key, leading to a crank-no-start condition. Our VIN programming ensures the security data is correctly set up for your vehicle.