End the Electrical Gremlins in Your GM Truck or Van
If you’re dealing with bizarre electrical issues in your 2003-2007 GM vehicle—like gauges going haywire, power windows with a mind of their own, or a security light that won’t turn off—you’re likely facing a failing Body Control Module (BCM). As the central nervous system for your vehicle’s accessories and security features, a faulty BCM can cause a cascade of frustrating problems. This isn’t just an annoyance; it can affect vehicle security and safety. This replacement 2003 – 2007 GM BCM is the definitive solution to restore order and reliability to your vehicle’s electronics.
The Dealer-Free Solution: Programmed & Ready to Install
The biggest headache with replacing a BCM has always been the mandatory, and often expensive, trip to the dealership for programming. We eliminate that step entirely. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout, and our technicians will flash this module with the latest official GM software specific to your truck or van. It arrives at your door ready for installation, saving you time, towing fees, and dealer labor costs. It’s the most efficient way to get your vehicle back in service.
A Technician’s Notebook: The Case of the Haunted Silverado
I remember a 2006 Silverado 1500 that came into my bay with a list of complaints that sounded like a poltergeist was at work. The radio would randomly shut off, the dome light would flicker while driving, and the driver’s power window only worked intermittently. The owner had already replaced the battery and checked fuses. After hooking up the scan tool, I saw multiple U-codes (communication errors) pointing to the BCM. These modules are notorious for internal solder joint failures over time, causing these exact unpredictable issues. We swapped in a VIN-programmed 2003 – 2007 GM BCM, and in under an hour, every single electrical gremlin was gone. The owner was thrilled to have his truck back to normal without a massive dealer bill.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional instrument cluster gauges (speedometer, tachometer, fuel).
- ✔ Power windows, door locks, or mirrors not working correctly or at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security or anti-theft light stays illuminated, potentially causing a no-start condition.
- ✔ Horn sounding unexpectedly or not working when pressed.
- ✔ Diagnostic trouble codes (DTCs) related to lost communication with various modules (U-codes).
A Straightforward Guide to BCM Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ 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. On Express and Savana vans, it’s typically found behind the center dash panel.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, remove any bolts or clips holding the module in place and take it out.
- ✔ Install the New Module: 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.
- ✔ Power Up: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and verify that your lights, gauges, and accessories are functioning correctly.
Important Post-Installation Information
While this module is programmed for a simple installation, some vehicle systems may require a recalibration procedure after the BCM is replaced. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. 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.
We believe in transparency and want you to have a smooth repair experience. There is no core charge for this part; you can keep your old module.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is compatible with a wide range of GM models, including:
- Chevrolet Silverado 1500/2500/3500 (2003-2007) – See specific options in the fitment chart.
- GMC Sierra 1500/2500/3500 (2003-2007) – See specific options in the fitment chart.
- Chevrolet Express 1500/2500/3500 Van (2003-2007) – See specific options in the fitment chart.
- GMC Savana 1500/2500/3500 Van (2003-2007) – See specific options in the fitment chart.
- Chevrolet SSR (2003-2006)
Please use the detailed fitment list to confirm compatibility with your specific year, model, and options before ordering. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
Do I need to program this BCM?
No. We program the module to your vehicle’s specific VIN before we ship it. It arrives ready to install, with no extra programming required, saving you a trip to the dealer.
Where is the BCM located on my truck?
On most 2003-2007 Silverado and Sierra models, it’s under the dashboard on the driver’s side. On Express and Savana vans, it is typically located in the center dash area. Always confirm the location for your specific model before starting.
What is a VIN and why do you need it?
The VIN is your car’s 17-digit Vehicle Identification Number, like a fingerprint. We use it to load the exact software and settings your vehicle had from the factory, ensuring perfect compatibility with your options (like power windows, keyless entry, etc.).
Will this fix my ‘Security’ light issue?
In many cases, yes. A faulty BCM is a very common cause of a persistent security light and related no-start problems on these GM vehicles. This programmed module will restore the proper function of the Passlock or Passkey security system.
What if my airbag light turns on after I install it?
This can happen occasionally. It means the new BCM needs to be electronically ‘introduced’ to the airbag control module (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Is there a core charge?
No, there is no core charge. You are not required to send your old BCM back to us, which simplifies the process for you.