Fix Your Van’s Electrical Gremlins for Good

Is your 2004-2007 GMC Savana 2500 van suffering from strange electrical issues? As the central command center for your vehicle’s body electronics, a failing Body Control Module (BCM) can cause a host of frustrating problems, from non-functional climate controls to a vehicle that won’t start. This replacement BCM, part number 15136877, is the reliable, straightforward solution. It arrives expertly programmed to your van’s specific VIN, eliminating the need for a costly trip to the dealership for programming. Get your workhorse back on the road and operating dependably.

Is Your Savana Van Showing These Electrical Faults?

A failing BCM can manifest in many ways. If you’re experiencing any of the following, your Body Control Module is the likely culprit. This is especially true if you see diagnostic trouble codes (DTCs) like B1001 or other U-series communication codes.

• ✔ The HVAC blower motor works intermittently or not at all.
• ✔ Power windows or door locks operate erratically or have failed completely.
• ✔ The anti-theft or security system light is on, preventing the engine from starting.
• ✔ Interior or exterior lights flicker, stay on, or won’t turn on.
• ✔ The airbag warning light is illuminated on the dashboard.
• ✔ The instrument cluster displays inaccurate information or loses power.

A Simple Installation Guide to Get Your Van Working Again

Replacing the 2004-2007 Savana 2500 BCM is a job most DIYers or any professional can handle in minutes. Because this module is pre-programmed to your VIN, no special computer relearns are typically required for basic operation.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and to help reset the system.
2. Locate the Module: In the Savana and Express vans, the BCM is typically located behind the center dash panel, often near the radio or HVAC controls. You may need to remove a trim piece for access.
3. Swap the Connectors: Carefully unplug the wiring harnesses from the old BCM. The connectors are color-coded and uniquely shaped, so they only fit in the correct sockets on the new module.
4. Install the New BCM: Plug the harnesses securely into your new, pre-programmed module and mount it in the original location.
5. Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.

Important Note on Post-Installation Procedures: In some cases, particularly if the airbag light was on, a professional scan tool may be needed to perform a “Setup SDM Primary Key in BCM” procedure to sync the airbag system. A Brake Pedal Position relearn may also be required on certain models. These are vehicle-specific and not a defect in the part.

Verified Fitment for Your GM Vehicle

This module is a direct replacement for part number 15136877 and is interchangeable with several other part numbers. It is guaranteed to fit the following vehicles, among others:

Frequently Asked Questions About the 2004-2007 Savana 2500 BCM

What does ‘VIN Programmed’ actually mean for me?

It means we load your vehicle’s specific Vehicle Identification Number (VIN) and factory-correct software onto the module before we ship it. This ensures it communicates perfectly with your van’s other computers, making installation a simple plug-and-play process without needing a dealership visit.

Do I need to send my old BCM back?

No. There is no core charge for this part. You can keep your old module, which saves you the time and hassle of return shipping.

What tools are required for installation?

For most installations, you will only need basic hand tools like a socket set or screwdriver to access the BCM behind the dash trim. No special electronic tools are needed for the physical swap.

What if my airbag light is still on after installing the new BCM?

This is normal if the old BCM had a fault related to the airbag system. The new BCM needs to be electronically ‘introduced’ to the airbag computer (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be done by a repair shop with a professional-grade scan tool.

Is this part covered by a warranty?

Yes, this Body Control Module comes with a one-year warranty, giving you peace of mind that you’re installing a quality, dependable part.