Is your GM vehicle suffering from strange and frustrating electrical issues?
The Body Control Module, or BCM, is the central command center for your vehicle’s electronic accessories. It manages everything from your power windows and locks to your interior lights, security system, and instrument cluster. When the BCM begins to fail, it can cause a wide range of confusing symptoms that seem unrelated. This can lead to costly diagnostic time and incorrect repairs. Stop guessing and replace the root cause of the problem with our reliable, VIN-programmed BCM.
This isn’t just a replacement part; it’s a complete solution. We take the hassle and expense out of the repair by programming the module to your vehicle’s specific VIN before it ships. This means no extra trips to the dealership for costly programming. It arrives at your door ready for a straightforward, plug-and-play installation.
From the Diagnostic Bay
We had a 2008 Chevy Impala come into the shop with a list of bizarre complaints. The dome light wouldn’t turn off, the radio would randomly change stations, and the driver’s side window only worked when it wanted to. The owner had already replaced fuses and even the window switch with no success. A quick scan with a professional tool revealed multiple communication error codes (U-codes) pointing back to a single culprit: a faulty BCM. By installing a pre-programmed GM Body Control Module, we resolved every single issue in under an hour, saving the customer from further diagnostic headaches and unnecessary part replacements.
Symptoms of a Failing GM Body Control Module
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) staying on or not turning on.
- ✔ The security or anti-theft system light is on, and the vehicle may not start.
- ✔ The horn honks randomly or doesn’t work when pressed.
- ✔ Wipers behaving erratically or not parking in the correct position.
- ✔ False warnings appearing on the instrument cluster (e.g., “Door Ajar”).
- ✔ Complete loss of communication, preventing diagnostic tools from reading other modules.
A Simple, Cost-Effective Solution
Our process is designed to get you back on the road quickly. Simply purchase the module and provide us with your vehicle’s VIN. We’ll handle the programming with the latest GM software updates, ensuring perfect compatibility. Once you receive the module, installation is typically as simple as locating your old BCM (often under the dash), disconnecting the battery, swapping the modules, and reconnecting everything. In most cases, your vehicle’s functions will be immediately restored. Best of all, there is no core charge, so you can keep your original part.
Post-Installation Information
While this GM Body Control Module is designed for plug-and-play installation, some vehicles may require minor relearn procedures after installation. This is normal. The two most common are:
- Airbag System Sync: If your airbag warning light is on after installation, a “Setup SDM Primary Key in BCM” procedure may be needed. This syncs the new BCM with the airbag system and requires a professional scan tool.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control function, a brake pedal position sensor recalibration may be necessary on certain models.
This module is a direct replacement for a wide range of part numbers, including: 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, and 95151084.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We program the module to your vehicle’s VIN before we ship it to you. It arrives ready for installation, saving you time and money.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note to your order or reply to your order confirmation email.
Where is the BCM located on my vehicle?
The location varies by model. It is commonly found under the driver’s or passenger’s side of the dashboard, or behind the center console. Please consult a service manual for your specific vehicle’s location.
Will this fix my ‘Service Theft System’ warning?
A ‘Service Theft System’ warning accompanied by a no-start condition is a very common symptom of a failing BCM. This programmed module is the correct solution for this issue in most cases.
What if my airbag light is on after I install it?
This is not a defect. On some vehicles, the new BCM needs to be electronically introduced to the airbag module (SDM). This procedure, called ‘Setup SDM Primary Key in BCM,’ requires a professional scan tool to complete.
Is there a core charge?
No, there is no core charge for this part. You can keep your old module.