Restore Your Vehicle’s Electrical System with a Plug-and-Play Solution
Are you tired of chasing down bizarre electrical gremlins in your GM vehicle? One minute the power windows don’t work, the next the radio is acting up, or you’re getting strange warning lights on your dash. As a technician with over two decades of experience, I’ve seen these exact issues hundreds of times. More often than not, the root cause isn’t a faulty switch or a bad wire, but the central hub of your vehicle’s body electronics: the Body Control Module (BCM).
Your vehicle’s BCM is the command center for dozens of components, including power locks, interior and exterior lighting, security systems, and climate controls. When it starts to fail, it can create a cascade of confusing and frustrating problems. This isn’t just an inconvenience; a failing BCM can affect vehicle security and safety systems. The solution is a reliable replacement, but traditionally, that meant a costly trip to the dealership for installation and programming. We’ve eliminated that step for you.
This BCM, part number 15872388, is the definitive fix for your vehicle. We take the hassle out of the repair by programming the module to your vehicle’s specific Vehicle Identification Number (VIN) before we ship it to you. This ensures it communicates perfectly with your vehicle’s other computers right out of the box, saving you from expensive dealership programming fees and diagnostic headaches. Just provide your VIN at checkout, and we’ll handle the rest, loading the latest GM software for optimal performance and reliability.
Case Study: A Tricky Diagnosis
A customer brought in a 2011 Chevy Traverse with an intermittent ‘no-start’ condition and a driver’s side window that worked when it felt like it. They had already replaced the window motor and the ignition switch based on advice from forums, but the problems persisted. After hooking up my scan tool, I noticed several communication loss codes (U-codes) pointing to the BCM. The BCM wasn’t sending the correct power or data signals consistently. Instead of continuing to replace individual parts, we installed a VIN-programmed BCM. The vehicle started reliably, the window worked perfectly, and all communication codes were cleared. It’s a classic example of how a single failing module can mimic multiple unrelated problems.
What are the Signs of BCM Failure?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or exterior lights staying on or not turning on at all.
- ✔ The security system acting up, causing intermittent no-start conditions.
- ✔ The horn honking randomly or the alarm going off without reason.
- ✔ Incorrect readings on the instrument cluster gauges.
- ✔ Diagnostic Trouble Codes (DTCs) related to lost communication, such as U0140, U0155, or other U-codes.
- ✔ A/C and climate control functions not working correctly.
Your Straightforward BCM Installation Guide
Installing your new Programmed GM BCM is a manageable job for a confident DIYer. While the exact location varies by model (see fitment list), the process is generally similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to allow the system to fully discharge.
- Locate the BCM: On most of the listed vehicles, the BCM is located under the driver’s side dash, often near the steering column or behind a kick panel. For vans like the Express and Savana, it’s typically behind the center dash.
- Remove Connectors: Carefully unplug all electrical connectors from the old BCM. They have locking tabs, so be gentle and use a small flathead screwdriver to depress the tabs if necessary. Do not pull on the wires.
- Swap the Module: Unbolt or unclip the old BCM from its mounting bracket. Secure the new, pre-programmed BCM in its place.
- Reconnect Everything: Plug all the electrical connectors firmly into the new module. You should hear or feel a click as they lock into place.
- Final Steps: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) for 10-15 seconds to allow the systems to initialize before starting the vehicle. Test all functions (lights, locks, windows, etc.).
Important Post-Installation Information
While our VIN programming handles the most critical setup, some vehicle systems may require a simple relearn procedure. In some cases, you may need to perform a ‘Brake Pedal Position Relearn’ or an ‘Airbag System Sync’ if a warning light appears. These procedures can often be done with a high-end bidirectional scan tool and are necessary for the BCM to fully integrate with all vehicle subsystems. We also make it easy with no core charge—you can keep your old part.
Verified Fitment for Your General Motors Vehicle
This module is a direct replacement for a wide range of GM vehicles and part numbers. Please verify that your vehicle and original part number are on this list. This BCM is compatible with 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.
Note: Specific options and IDs may apply. Please consult the original listing data or contact us to confirm fitment.
Why do you need my VIN?
We require your 17-digit Vehicle Identification Number (VIN) to program the BCM with the exact software and calibrations for your vehicle’s specific options. This ensures it works correctly right out of the box and communicates properly with other modules, like the engine computer and transmission controller.
Is this a simple plug-and-play installation?
For most functions, yes. Because we pre-program the module, you avoid the most complex part of the installation. However, as noted in the description, some models may require a Brake Pedal Position Relearn or an Airbag System Sync with a pro-level scan tool if you get a related warning light after installation.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of security system problems and ‘Service Theft System’ messages. By installing a new, correctly programmed BCM, you will likely resolve these issues and allow your vehicle to start reliably.
Do I need to send my old BCM back?
No. We do not require a core return for this part. There is no core charge, so you can keep your original module.
How do I find my original part number?
Your original BCM will have a sticker on it with the part number. It is typically a 8-digit number. Matching this number to our extensive cross-reference list guarantees compatibility.