Restore Your Vehicle’s Electrical System with a Reliable, Programmed BCM
Are you chasing electrical gremlins in your GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or even a car that refuses to start can all point to one central culprit: a failing Body Control Module (BCM). As the nerve center for your vehicle’s comfort and convenience features, a faulty BCM can cause a cascade of frustrating and seemingly unrelated problems. I’ve seen it hundreds of times in my shop—a customer comes in at their wit’s end, and a new BCM brings their car back to life.
This isn’t just a replacement part; it’s a complete solution. We take the guesswork and the expensive dealership trip out of the equation. Simply provide your Vehicle Identification Number (VIN) at checkout, and our technicians will program this GM Body Control Module with the latest factory software specific to your car or truck. It arrives at your door ready for installation, saving you time, money, and the headache of coordinating with a programming service.
Case Study: A Tricky Diagnosis
I remember an ’09 Chevy Impala that was towed to my bay. The owner said it would randomly fail to start, and the ‘Service Theft System’ light would flash on the dash. Other times, the radio would cut out, and the power locks would cycle on their own. He had already replaced the battery and checked the alternator. After hooking up my pro-level scan tool, I saw multiple ‘U’ codes, indicating a loss of communication between modules. This is a classic sign. The BCM acts as a gateway, and when it fails, it creates a communication breakdown. We installed a VIN-programmed BCM, and all the bizarre symptoms vanished instantly. It’s a common failure, but it often mimics other problems.
Is Your Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional interior/exterior lights (headlights, dome lights).
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The anti-theft or security system light is on, preventing the engine from starting.
- ✔ Instrument cluster gauges behaving erratically or going dark.
- ✔ Radio or climate control systems are unresponsive.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0100, U0140, or other ‘U’ codes.
- ✔ A ‘Service Theft System’ or similar warning message on the driver information center.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- ✔ Locate the BCM: The location varies. On many GM cars like the Impala or Acadia, it’s behind the driver’s side lower dash panel. On Express/Savana vans, it’s often in the center dash. For trucks and SUVs like the Tahoe, check under the steering column. A quick search for your specific model will confirm the location.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors. Most have a locking tab that needs to be pressed or lifted. Once disconnected, unbolt or unclip the old BCM and remove it from the vehicle.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same position as the old one. Securely reconnect all electrical connectors, making sure they click into place.
- ✔ Reconnect Power: Reattach the negative battery terminal. Your vehicle’s core functions should now be restored.
Important Post-Installation Information
While this module is programmed for a direct installation, some GM vehicles require a final handshake between modules. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional scan tool to sync the new BCM with the airbag system. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
- No Core Charge: You can keep your old BCM. There is no core charge and no need to send the original part back to us.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step of the process.
Will This Fit My Vehicle?
This GM Body Control Module is a direct replacement for a wide range of Chevrolet, GMC, Buick, Cadillac, Saturn, and Pontiac vehicles. It replaces numerous original part numbers, ensuring broad compatibility. Please verify your vehicle is on the list below. This module is a confirmed fit for 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.
Frequently Asked Questions
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready to be installed, though some models may require minor relearn procedures as noted above.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot ship the module until we receive this information.
What if my original part number isn’t 15872388?
This module is a direct replacement for all the part numbers listed in the description. As long as your original part number is on our list, this module will work correctly.
What tools are needed for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn procedures require a bi-directional professional scan tool, like a GM Tech 2, MDI, or equivalent high-end diagnostic device.
Is there a core charge for my old part?
No, there is no core charge. You can keep or dispose of your original module without needing to send it back to us.