If you’re dealing with bizarre electrical problems in your GM truck or van, you’ve come to the right place. As a technician with over two decades of experience, I know how frustrating it can be when your power windows have a mind of their own, the security light flashes for no reason, or the interior lights flicker like a horror movie. These aren’t random glitches; they’re classic signs of a failing Body Control Module (BCM), the central hub for your vehicle’s body electronics.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We take a reliable BCM, load it with the latest official GM software, and program it specifically to your vehicle’s VIN before we ship it. This means you get a part that’s truly plug-and-play, saving you from a costly trip to the dealership for programming and diagnostics. Get your workhorse back in reliable condition with a dependable 2003-2007 Savana 2500 BCM.
Case Study: A Tricky Diagnosis
I remember a 2006 Silverado 2500 that came into my shop a few years back. The owner, a contractor, was at his wit’s end. His dome light would stay on, draining the battery overnight, and his power door locks worked intermittently. He’d already replaced the battery and a door latch assembly with no luck. After connecting my scan tool, I saw a handful of U-codes (communication errors) pointing to the BCM. Instead of sending him to the dealer for a new module and a hefty programming fee, we ordered one of these pre-programmed units. An hour after it arrived, the truck was fixed. All symptoms gone. It’s a perfect example of how this one part can solve a dozen confusing issues.
Is Your Vehicle Showing These Symptoms?
A failing BCM can cause a wide range of confusing electrical issues. Here are the most common problems I’ve seen in my shop:
- ✔ Erratic or non-functional power windows and door locks.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security or anti-theft light is on, sometimes causing a no-start condition.
- ✔ Horn honking randomly or not working when pressed.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ False warnings on the driver information center (e.g., “Door Ajar”).
- ✔ Diagnostic trouble codes (DTCs) related to body systems (B-codes) or network communication (U-codes).
A Straightforward Guide to BCM Installation
Replacing the BCM is a manageable job for a DIYer with basic tools. In most Savana and Express vans, it’s located behind the center dash trim. In Silverado and Sierra pickups, it’s typically found under the steering column.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Carefully remove the necessary dash panels or lower steering column cover to expose the old BCM.
- Disconnect and Remove: Unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the BCM from its mounting bracket.
- Install the New BCM: 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.
- Reconnect and Test: Reassemble the dash panels and reconnect the negative battery terminal. Start the vehicle and test all functions: power windows, locks, lights, horn, and wipers to confirm the repair.
Important Post-Installation Information
While this module is programmed to be a direct fit, some vehicle systems may require a recalibration procedure after the BCM is replaced. This is normal and ensures all components communicate correctly.
- ✔ Airbag System Sync: If your airbag warning light is illuminated 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 might be necessary to ensure brake lights and traction control function properly.
- ✔ No Core Charge: You are not required to return your old BCM. There is no core charge associated with this purchase.
Disclaimer: Vehicle systems vary. For procedures specific to your exact model, always consult a factory service manual or a certified automotive technician.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part number 15194169 and is interchangeable with several other part numbers, including: 15167329, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is confirmed to fit the following vehicles:
- Chevrolet Express 1500/2500/3500 Van: 2003-2007
- Chevrolet Silverado 1500/2500/3500 Pickup: 2003-2007 (Classic body style for ’07)
- Chevrolet SSR: 2003-2006
- GMC Savana 1500/2500/3500 Van: 2003-2007
- GMC Sierra 1500/2500/3500 Pickup: 2003-2007 (Classic body style for ’07)
Note: Please check the original description for specific options and exclusions (e.g., Crew Cab, transmission type). A correct 2003-2007 Savana 2500 BCM ensures proper function.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, providing your VIN is essential. We use it to program the BCM with the correct software and settings for your vehicle’s specific options. This step is what makes the installation plug-and-play and saves you a trip to the dealer.
Will this fix my ‘Security’ light and no-start problem?
In most cases, yes. The BCM is a critical part of the GM Passlock/Passkey anti-theft system. A failing BCM is a very common cause of security light and no-start issues on these vehicles.
Is any other programming needed after I install it?
The main programming is done by us before shipping. However, as noted above, some vehicles may require a simple relearn procedure for the airbag or brake pedal position sensor, which can be done with a bi-directional scan tool.
What if I have the ‘Commercial Tradesman Package’ in my van?
This specific BCM is for vans WITHOUT the commercial tradesman package. That package often includes different wiring and features that require a different BCM. Please verify your vehicle’s options before ordering.
How do I find the part number on my old BCM?
The part number is printed on a white sticker on the BCM’s case. Once you access the module, you should be able to see the sticker clearly. Matching it to our list of compatible numbers confirms you’re ordering the right part.