Tired of Frustrating Electrical Gremlins in Your GM Vehicle?
Are your power windows acting possessed? Do your interior lights flicker randomly, or have your power locks decided to go on strike? As a technician with over two decades of experience, I’ve seen these exact issues hundreds of times, and they almost always point to one culprit: a failing Body Control Module (BCM). The BCM is the central hub for your vehicle’s comfort and convenience features, and when it starts to fail, it can make driving a nightmare. Forget the expensive dealership visit and the hassle of programming. Our GM BCM Cloning Service is the simple, reliable solution you’ve been looking for.
We take the complexity out of the repair. Here’s how it works: You send us your original BCM. We then transfer all of its critical data—including key information, security settings, and vehicle-specific options—to a fully functional replacement module. This means the unit you receive from us is 100% plug-and-play. No need for a GM Tech2 or other expensive scan tools for programming. We ship your original module back to you along with the ready-to-install replacement.
Is Your Vehicle Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system light is on, or the vehicle won’t start (anti-theft issue).
- ✔ Inconsistent or non-functional remote keyless entry.
- ✔ Strange warning messages on the instrument cluster like “Service Theft System.”
- ✔ Diagnostic trouble codes (DTCs) related to communication, such as U0140, U0155, or B1001.
Case Study: A Tricky Diagnosis
A customer brought in their 2008 Chevy Impala with a bizarre list of complaints: the radio would turn off randomly, the driver’s side window wouldn’t go down, and the remote start had stopped working. There were no check engine lights, but my scan tool pulled a U0140 code—Lost Communication With Body Control Module. After checking the main power and ground connections to the BCM, it was clear the module itself was failing internally. Instead of a costly new unit and hours of programming at the dealer, we used this exact cloning service. The customer had their car back the next day with all issues resolved. It’s a reliable fix that saves time and money.
A Straightforward Guide to Installation
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait about 10 minutes to ensure all systems are powered down.
- Locate the BCM: The location varies by model (see fitment list below). It’s typically found under the driver’s or passenger’s side of the dashboard, or in the center console area.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the New Module: Mount the cloned BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it securely.
- Test Functions: Start the vehicle and test all body functions: windows, locks, lights, wipers, radio, etc., to confirm the repair was successful.
Important Post-Installation Steps
In some cases, your vehicle may require a couple of quick relearn procedures after installation. These are standard for many electronic repairs.
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require this procedure to ensure your brake lights and traction control system function correctly.
Always consult a factory service manual or a qualified technician if you are unsure about any step.
Guaranteed Fitment for Your Vehicle
This cloning service is compatible with a wide range of GM vehicles. Please match your part number to the list below or verify your vehicle is on the fitment list. This module is a direct replacement for 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
What exactly is a BCM cloning service?
Cloning is a process where we transfer the exact software, programming, and security data from your original, failing BCM to a replacement unit. This makes the new part a perfect digital match for your vehicle, eliminating the need for dealership programming.
Do I need to do any programming after I install it?
No. The main programming is already done via our cloning service. The module will be plug-and-play. However, as noted above, some vehicles may require minor relearn procedures for the airbag or brake pedal position sensor, which can sometimes be done by a local shop.
How does the process work after I purchase?
After you place your order, you will need to ship your original BCM to us. Once we receive it, we perform the cloning service and ship both your original module and the ready-to-install replacement back to you, typically within 1-2 business days.
Do you keep my old BCM?
No, we always return your original module along with the programmed replacement. We do not require a core.
Will this fix my vehicle’s no-start problem?
If the no-start condition is caused by the BCM’s control over the anti-theft or security system, then yes, this service will resolve the issue. A faulty BCM is a very common cause for security-related starting problems.