Restore Your Van’s Electrical System and Get Back to Work
Is your 2003-2007 Chevrolet Express or GMC Savana Van acting possessed? Flickering interior lights, power windows with a mind of their own, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated problems, turning your reliable workhorse into a source of daily headaches. Don’t let electrical gremlins sideline your vehicle. This direct-replacement BCM is the definitive solution to restore full functionality and peace of mind.
We take the guesswork and dealer expense out of the equation. Unlike a generic module from a parts store, this BCM arrives at your door pre-programmed with the latest GM software, specifically flashed to your vehicle’s unique VIN. This ensures seamless integration and proper operation of all your van’s features right out of the box. Simply provide your VIN after purchase, and our experts will handle the complex programming, saving you a costly trip to the dealership and hours of diagnostic frustration. Installing a new 2003-2007 Express 3500 BCM has never been more straightforward.
Case Study: A Tricky Diagnosis
I once had a 2006 Express 3500 in my bay that was driving the owner crazy. The radio would turn on and off randomly, the dome lights would flicker while driving, and the power locks worked intermittently. The owner had already replaced the battery and checked all the fuses. A scan tool showed communication loss codes (U-codes) with multiple modules. This pointed directly to the BCM, which acts as the network gateway. After swapping in a VIN-programmed BCM, every single issue vanished. It’s a perfect example of how one failing component can create a dozen confusing symptoms.
Is Your GM Van or Truck Showing These Symptoms?
- ✔ Erratic or non-functional power windows and door locks.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security or anti-theft light staying illuminated, preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Intermittent operation of the radio or climate controls.
- ✔ False warning messages on the instrument cluster.
- ✔ Diagnostic trouble codes related to communication errors (e.g., U0140, U0155) or BCM internal faults.
A Straightforward Guide to Installation
Replacing the BCM in your Express or Savana is a manageable job for a confident DIYer. The module is typically located in the center of the dashboard. While this 2003-2007 Express 3500 BCM is a plug-and-play solution, always follow proper safety procedures.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Access the BCM: Carefully remove the necessary dash panels to gain access to the BCM, which is located in the center dash area. Refer to a service manual for your specific model’s panel removal procedure.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the old module and remove it from the vehicle.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location as the original. Securely plug in all the electrical connectors, ensuring they click into place.
- Reconnect and Test: Reassemble the dash panels, then reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, locks, windows, radio, etc.
- Perform Relearns (If Needed): In some cases, you may need to perform additional procedures. If the airbag light is on, a ‘Setup SDM Primary Key in BCM’ procedure is required using a pro-level scan tool. A brake pedal position relearn might also be necessary for proper brake light function.
Guaranteed Fitment for Your GM Vehicle
This BCM, part number 15194169, is a direct replacement for a wide range of GM trucks and vans. It is a verified fit for the original part numbers: 15167329, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is compatible with the following models (please verify options):
- Chevrolet Express 1500/2500/3500 Van (2003-2007)
- GMC Savana 1500/2500/3500 Van (2003-2007)
- Chevrolet Silverado 1500/2500/3500 Pickup (2003-2007 Classic)
- GMC Sierra 1500/2500/3500 Pickup (2003-2007 Classic)
- Chevrolet SSR (2003-2006)
This is the reliable fix you need for your vehicle. By ordering this pre-flashed 2003-2007 Express 3500 BCM, you’re not just buying a part; you’re buying a complete, hassle-free solution.
Frequently Asked Questions
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We must have this information to program the BCM before shipment.
Is this a difficult part to install myself?
For someone with moderate mechanical skill, it’s a very manageable job. The main challenge is accessing the module within the dashboard. Since we handle the programming, the electrical part is simply plug-and-play.
What tools are required for the post-installation procedures?
If the airbag light comes on or a brake pedal relearn is needed, these procedures require a bi-directional professional diagnostic tool (like a Tech 2 or high-end Snap-on/Autel scanner). Many local repair shops can perform these services for a small fee if necessary.
Will this fix my ‘Service Theft System’ message?
Yes, a failing BCM is a very common cause of issues with the Passlock anti-theft system. Replacing it with a correctly programmed module often resolves these security-related problems.
What happens if I install it and still have problems?
Our modules are rigorously tested. If issues persist, it may indicate another problem in the vehicle’s wiring or a different faulty component. Our expert support team is here to help you diagnose the situation.