Restore Full Electrical Function to Your GM Vehicle
Are you battling bizarre and frustrating electrical problems in your Chevrolet, GMC, Cadillac, or Buick? Issues like flickering lights, malfunctioning power windows and locks, a misbehaving security system, or a persistent battery drain often point to a single culprit: a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it malfunctions, it can create a cascade of seemingly unrelated issues. This VIN-programmed GM Body Control Module is the definitive solution to restore your vehicle’s proper operation and your peace of mind.
From the Diagnostic Bay
We had a 2008 GMC Acadia come into the shop with a classic “haunted car” scenario. The owner reported that the interior lights would stay on, the radio would sometimes not turn off after opening the door, and the remote key fob worked intermittently. They had already replaced the battery twice, assuming it was a power drain issue. Our diagnostic scan revealed multiple communication fault codes all pointing back to the BCM. Instead of a complicated wiring chase, the fix was straightforward: we installed a VIN-programmed BCM. Once installed, all the ghostly electrical issues were immediately resolved. It’s a common failure point that can mimic many other problems.
Symptoms of a Failing BCM
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The anti-theft or security system engaging randomly, preventing the car from starting.
- ✔ Instrument panel warning lights illuminating without a clear cause.
- ✔ A parasitic battery drain that kills your battery overnight.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers activating on their own or not responding to the switch.
The Plug-and-Play Solution: A Pre-Programmed Module
Dealerships and many repair shops will sell you a blank module that requires expensive, specialized equipment for programming. We eliminate that step. Simply provide us with your vehicle’s 17-digit VIN during checkout, and our technicians will program this GM Body Control Module with the latest software updates direct from GM. This ensures it communicates perfectly with your vehicle’s existing systems right out of the box. This is a direct replacement for a wide range of part numbers, including 10382479, 15828601, 20815898, 22860591, and many more.
Installation and Post-Install Considerations
While this module is designed for a straightforward installation, some vehicles may require additional steps after the part is connected. Depending on your specific model, a professional scan tool may be needed to perform a “Brake Pedal Position Relearn” or an “Airbag System Sync” (also known as ‘Setup SDM Primary Key in BCM’). These are simple procedures for a qualified technician that ensure all related safety systems are correctly calibrated with the new BCM. As always, consulting a factory service manual for your vehicle is recommended.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that manages and controls your vehicle’s body-related electronic accessories. This includes power windows, locks, lights, wipers, the security system, and more.
Do I need to get this BCM programmed?
No. We handle the programming for you before we ship the part. Just provide your vehicle’s VIN at checkout, and it will arrive ready for installation, loaded with the latest GM software.
Where is the BCM located on my vehicle?
The location varies by model. It’s commonly found under the driver’s side dash near the steering column, in the center dash, or behind the glove box. The fitment list provided gives a general location for each compatible model.
Will this fix my car’s battery drain?
If the battery drain is caused by a faulty BCM that isn’t properly going to “sleep” and is keeping other modules awake, then yes, replacing it will solve the parasitic drain.
What if my airbag light comes on after installation?
This indicates that the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A technician with a professional diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Is there a core charge?
No, there is no core charge for this part. You can keep your old module.