Restore Your Van’s Electrical System with a VIN-Programmed BCM

Is your 2008-2012 Savana 3500 Van acting possessed? Flickering lights, malfunctioning power windows, a security system that won’t cooperate, or even a frustrating no-start condition can often be traced back to a single component: a failing Body Control Module (BCM). The BCM is the central command center for your van’s body electronics, and when it starts to fail, it can cause a cascade of confusing and unpredictable problems. This isn’t just an inconvenience; it can be a serious safety issue when components like lights and door locks don’t work as they should.

We offer a straightforward, reliable solution. This Body Control Module, part number 20864767, is the answer to those electrical gremlins. The best part? We take the guesswork and expense out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the module with the latest GM factory software specific to your Savana. It arrives at your door ready to install, saving you a costly trip to the dealership for programming.

Common Signs of a Failing BCM

If you’re experiencing any of the following, a faulty Body Control Module is a likely culprit. I’ve seen these symptoms countless times in my 20+ years of diagnostic work.

• ✔ Erratic or non-functional interior and exterior lights.
• ✔ Power windows, door locks, or mirrors working intermittently or not at all.
• ✔ The security system or keyless entry failing to operate correctly.
• ✔ The dashboard displaying incorrect information or warning lights staying on.
• ✔ Communication error codes, often U-codes (e.g., U0140), stored in the system.
• ✔ The vehicle failing to crank or start due to a lack of communication between modules.

A Straightforward Guide to BCM Installation

For the Savana and Express vans, this is a very accessible job for a DIYer or any professional technician. The BCM is typically located behind the center of the dashboard.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
2. Locate the Module: On most Savana and Express vans, you’ll find the BCM mounted in the center dash area, often accessible after removing a lower dash panel.
3. Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unbolt or unclip the module from its mounting bracket.
4. Install the New BCM: Mount the new, pre-programmed BCM in the exact same position and securely reconnect all electrical connectors.
5. Reconnect Power: Reattach the negative battery terminal.
6. Perform Relearns: Start the vehicle. As noted below, you may need to perform a Brake Pedal Position relearn or an Airbag System sync if a warning light appears.

Important Post-Installation Information

While this module is programmed for your VIN, some vehicle systems may require recalibration after the BCM is replaced to ensure full functionality and clear any warning lights.

• Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool.
• Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure proper operation of the brake lights and traction control system.
• No Core Charge: You are not required to return your old module. This saves you the time and money associated with core returns.

Will This Fit My Vehicle?

This BCM is a direct-fit replacement for a wide range of GM vehicles. Please verify that your vehicle and original part number are listed below. This module replaces the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.