Restore Your Van’s Electrical System with a Programmed BCM
Are you experiencing frustrating and unpredictable electrical problems in your GMC Savana or other GM vehicle? Issues like flickering lights, malfunctioning power windows and locks, or strange warning messages on your dash are often caused by a failing Body Control Module (BCM). The BCM acts as the central computer for your vehicle’s body electronics, and when it fails, it can create a host of confusing symptoms. This replacement BCM, part number 20935349, is the reliable, straightforward solution to get your vehicle’s features working correctly again.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior dome lights or exterior lamps staying on or not turning on.
- ✔ Erratic instrument cluster behavior, including faulty gauges or warning lights.
- ✔ “Service Theft System” or other security-related messages appearing.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire.
- ✔ HVAC (heating and air conditioning) controls becoming unresponsive.
- ✔ Remote keyless entry failing to work.
Solving Issues with Your 2008-2012 Savana 2500 BCM
This isn’t just a part; it’s a complete solution. We take the guesswork and hassle out of the repair by programming the module to your vehicle’s specific VIN before it ships. This ensures that the BCM has the correct software and vehicle-specific options loaded, making the installation process as simple as possible. By providing a module matched to your van, you avoid the need for expensive dealer-specific scan tools and programming procedures. This is the most efficient way to repair your 2008-2012 Savana 2500 BCM and restore its factory functions.
Important Post-Installation Steps
While this module is designed for a straightforward installation, some vehicles may require additional calibration steps to ensure all systems communicate correctly. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light illuminates after installation, a procedure called “Setup SDM Primary Key in BCM” must be performed. This requires a professional-grade diagnostic tool to sync the new BCM with the airbag system. This is only necessary if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to prevent issues with the traction control system.
Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Compatible Part Numbers
This module is a direct replacement for a wide range of original part numbers, ensuring broad compatibility. Your original module must have one of the following 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.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors most of the non-engine related electronic accessories. This includes power windows, locks, lights, wipers, the security system, and more.
Why do I need to provide my VIN?
Providing your VIN is crucial. We use it to load the latest GM software and your vehicle’s specific configuration onto the BCM before shipping. This ensures it works correctly with the options your vehicle was built with, saving you a trip to the dealer for programming.
Is this part difficult to install?
For most DIY mechanics, the installation is straightforward. The BCM is typically located in the dash area. Once you locate it, it’s a matter of disconnecting the battery and swapping the electrical connectors. However, some vehicles may require the post-installation procedures mentioned above.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module.
What if the airbag light is on after I install this?
If the airbag light comes on, the vehicle needs an ‘Airbag System Sync’ (Setup SDM Primary Key in BCM) procedure. This must be done by a repair shop or technician with a compatible high-level scan tool to sync the BCM with the airbag module.
Will this fix my specific problem?
This module will fix issues directly caused by a faulty BCM. If you are experiencing any of the symptoms listed, a failing BCM is a very likely cause. Proper vehicle diagnosis is always recommended to confirm the BCM is the point of failure.