Are you experiencing a host of frustrating and seemingly unrelated electrical problems in your vehicle? From flickering lights to non-functional power windows and confusing warning messages, a failing Body Control Module (BCM) is often the culprit. The BCM acts as the central nervous system for your car’s body electronics, and when it malfunctions, it can cause widespread chaos. This replacement Body Control Module, part number 20839063, is the definitive solution to restore full functionality and peace of mind.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We pre-program the module to your vehicle’s specific VIN before shipping, loading it with the latest GM software updates. This critical step ensures seamless integration with your vehicle’s existing systems, eliminating the need for an expensive trip to the dealership for programming. Simply provide your VIN after purchase, and we’ll handle the rest.
From the Diagnostic Bay
We had a 2010 Cadillac STS come into the shop with a list of bizarre symptoms. The owner reported that the interior dome lights would stay on, the radio would randomly change stations, and the security light was flashing intermittently. He had already replaced the battery and checked all the fuses. After connecting our diagnostic scanner, we found multiple communication loss codes with various modules. All signs pointed to a faulty BCM. By installing a VIN-programmed 2010 STS Body Control Module, we were able to resolve all the electrical gremlins in a single repair, saving the customer time and hundreds of dollars compared to a dealership visit.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system malfunctioning or preventing the car from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Dashboard warning lights (like ABS, Airbag, or Traction Control) illuminating for no reason.
- ✔ Problems with the heating and A/C controls.
- ✔ Communication errors when trying to scan the vehicle with a diagnostic tool.
Why Choose Our Pre-Programmed 2010 STS Body Control Module?
This module is a direct-fit replacement for a wide range of original GM part numbers, ensuring broad compatibility. By purchasing from us, you get a reliable part that is programmed specifically for your vehicle’s options and configuration. There is no core charge, so you don’t have to worry about the cost and hassle of returning your old, faulty unit. Please note that while the module is programmed for plug-and-play installation, certain vehicles may require post-installation procedures like an Airbag System Sync or a Brake Pedal Position Relearn, which may require a professional-grade scan tool to complete. Always consult a factory service manual for your specific model.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before we ship it. It arrives ready for installation, saving you time and money.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN. We cannot process and ship your order without it, as the programming is specific to your car.
Will this fix my car’s specific electrical problem?
This module will correct issues directly caused by a faulty BCM. If your vehicle exhibits the symptoms listed, it is a very likely solution. However, proper vehicle diagnosis is always recommended to rule out other potential causes like wiring or sensor faults.
Are any other steps needed after installation?
In some cases, post-installation procedures may be necessary. For example, if the airbag light is on, a relearn procedure must be performed with a compatible scan tool. This is normal and ensures all vehicle systems are correctly synced with the new BCM.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module without any additional fees.