Restore Full Functionality to Your GM Truck or Van
Are you dealing with baffling electrical issues in your Silverado, Sierra, Express, or Savana? Power windows with a mind of their own, locks that don’t respond, or interior lights that flicker randomly? These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause widespread and unpredictable problems. This direct-fit BCM is the reliable, straightforward solution to get your vehicle operating as it should.
We take the guesswork and dealer hassle out of the equation. Simply provide your vehicle’s VIN at checkout, and our technicians will program this module with the latest official GM software specifically for your truck or van. It arrives at your door ready to install, saving you a trip to the dealership and their expensive programming fees. This isn’t just a replacement part; it’s a restoration of your vehicle’s electronic stability and a permanent fix for those frustrating electrical gremlins.
A Technician’s Notebook: The Ghost in the 2005 Sierra
A customer brought in his ’05 Sierra 2500, convinced it was haunted. The radio would turn on by itself, the driver’s side window would only work intermittently, and the security light would flash, occasionally preventing it from starting. He’d already replaced the battery and checked grounds. After plugging in my scanner, I saw several communication loss codes pointing to the BCM. These modules are notorious for internal solder joint failures over time, causing exactly this kind of random behavior. We installed a pre-programmed 2003-2007 GM BCM, and within an hour, every single issue was resolved. The customer was thrilled to have his reliable work truck back without the mystery problems.
Is Your GM Vehicle Showing These Symptoms?
- ✔️ Erratic or non-functional power windows, door locks, or mirrors.
- ✔️ Interior dome lights or dashboard lights staying on or not working at all.
- ✔️ The security system light is on, or the vehicle won’t start (Passlock issues).
- ✔️ Horn activating randomly or not working when pressed.
- ✔️ Communication error codes (U-codes) stored in the system.
- ✔️ Wipers operating incorrectly or not parking in the correct position.
Your Straightforward Installation Guide
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ 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. For Express and Savana vans, it’s typically behind the center dash panel.
- ✔ Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. A simple trim removal tool can prevent scratches.
- ✔ Disconnect and Remove: 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. Reconnect all the electrical connectors, ensuring they click securely into place.
- ✔ Final Steps: Reinstall the trim panels and reconnect the negative battery terminal. Start the vehicle to confirm the fix. Note: Some models may require the post-installation procedures listed below.
Verified Fitment for These GM Models
This 2003-2007 GM BCM is a direct replacement for a wide range of trucks and vans. It is compatible with part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please verify your specific model and options below:
- Chevrolet Silverado 1500/2500/3500 (2003-2007 Classic, exc. Crew Cab)
- GMC Sierra 1500/2500/3500 (2003-2007 Classic, exc. Crew Cab)
- Chevrolet Express 1500/2500/3500 Van (2003-2007, check options)
- GMC Savana 1500/2500/3500 Van (2003-2007, check options)
- Chevrolet SSR (2003-2006)
Note: Compatibility can depend on transmission type and specific packages (e.g., Commercial Tradesman Package). Always match your part number or consult the detailed fitment list.
Post-Installation Information
This module is programmed to be as close to plug-and-play as possible. However, due to GM’s security and safety systems, some vehicles may require additional steps:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed by a professional with a capable diagnostic tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light and traction control operation.
- No Core Charge: You are not required to return your old BCM. There is no core charge or deposit.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any procedures.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, providing your 17-digit VIN is essential. We use it to load the exact, correct GM software for your vehicle’s specific options and configuration. This ensures proper function and avoids compatibility issues.
Is this a plug-and-play part?
For most vehicles, yes. Because we program it to your VIN, it eliminates the need for dealer programming. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake systems, which a local shop can perform.
Will this 2003-2007 GM BCM fix my no-start problem?
If your no-start condition is caused by the factory anti-theft system (Passlock/VATS) being controlled by a faulty BCM, then yes, this will resolve the issue. Our programming correctly syncs the security data for your vehicle.
What if my original part number isn’t 15747545?
This module is a direct replacement for several part numbers, including 15167329, 15194169, 15136224, and more. As long as your original part number is on our cross-reference list, this module will work perfectly.
Do I have to send my old BCM back?
No. We do not require you to return your original module. There is no core charge associated with this purchase.