Restore Full Electrical Function to Your 2010 Chevrolet Avalanche 1500
If you’re dealing with bizarre electrical issues in your 2010 Avalanche—like power windows with a mind of their own, flickering interior or exterior lights, or a security system that won’t behave—a failing Body Control Module (BCM) is the likely culprit. As the central nervous system for your truck’s body electronics, a faulty BCM can cause a cascade of frustrating and hard-to-diagnose problems. This isn’t just an annoyance; it can affect vehicle security and safety. This replacement Body Control Module, part number 15872388, is the definitive solution to restore your vehicle’s reliability and functionality.
We take the guesswork and hassle out of the repair. This isn’t just a part in a box; it’s a comprehensive solution. With our included Cloning Service, we transfer the essential data from your original module to this replacement unit. Simply provide your vehicle’s VIN after purchase, and we’ll handle the programming before it even ships. This means no expensive trips to the dealership for programming and a much simpler installation process for you or your mechanic.
Case Study: A Tricky Diagnosis
I had a 2010 Avalanche 1500 in my bay last month with a laundry list of complaints from the owner: the radio would randomly shut off, the dome lights wouldn’t work, and the dash intermittently displayed a “Service 4WD” message. The owner had already replaced the battery and checked all the fuses. A scan showed a U0140 code—Lost Communication With Body Control Module. While other modules were suspected, experience pointed me to the BCM. Water intrusion from a leaky windshield seal had caused corrosion on the BCM’s main connector. After installing one of our pre-programmed modules, every single electrical gremlin was gone. It’s a classic example of how a single component, the 2010 Avalanche 1500 BCM, can create widespread, confusing symptoms.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your Body Control Module needs attention:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system or keyless entry system malfunctioning.
- ✔ The horn sounding unexpectedly or not working when pressed.
- ✔ Warning lights on the dashboard with no apparent cause (e.g., ABS, Airbag, Traction Control).
- ✔ Communication error codes, such as U0140, U0155, or other “U” codes pointing to network issues.
- ✔ Wipers operating intermittently or not parking in the correct position.
A Straightforward Guide to Installation
Thanks to our cloning service, installing your new BCM is a direct replacement process. While the exact location can vary slightly, on the 2010 Avalanche, it’s typically found under the driver’s side of the dashboard.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On the Avalanche, you’ll find the BCM mounted under the steering column, often behind a lower dash panel. You may need to remove a plastic trim piece for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed BCM in the same location. Reconnect all electrical connectors firmly until they click into place.
- Reconnect Battery & Test: Reattach the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to confirm the repair.
Important Post-Installation Steps
In some cases, additional vehicle-specific relearn procedures may be needed after installation. These are typically performed with a professional-grade scan tool.
- Airbag System Sync: If the airbag light is illuminated after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is required to sync the systems. This is only necessary if the warning light is on.
- Brake Pedal Position Relearn: Some models may require a recalibration of the brake pedal position sensor to ensure correct brake light and traction control operation.
Disclaimer: Procedures can vary. We always recommend consulting a factory service manual or a certified technician for your specific vehicle.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15872388 and is compatible with a wide range of GM vehicles. Please verify your part number or match your vehicle from the list below to ensure proper fitment. This module fits numerous models including the 2010 Avalanche 1500 BCM (ID 25892622) and many others:
Frequently Asked Questions
What is a BCM Cloning Service?
Our cloning service involves transferring the specific software, VIN, and security information from your original BCM to the replacement unit. This makes the new module plug-and-play, avoiding the need for expensive dealership programming and special tools after installation.
Do I need to send my original BCM to you?
No, this service is a programming service, not a cloning service that requires your old part. We program the replacement module using the VIN you provide at checkout, loading it with the latest GM software for your vehicle’s specific configuration.
Will this fix my check engine light?
The BCM primarily controls body electronics, not engine functions. If you have a check engine light, the issue is likely with the Engine Control Module (ECM) or another powertrain component. This BCM will resolve issues related to lights, windows, locks, and security systems.
Is this a difficult part to install for a DIYer?
For someone with basic mechanical skills, this is a very manageable job. The main challenge is typically accessing the module under the dashboard. Since we handle the programming, the electrical part of the job is simply unplugging the old unit and plugging in the new one.
What happens if the airbag light comes on after I install it?
This can happen occasionally. It means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). A mechanic with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
What is your policy on the old part (core)?
We do not require you to send your original module back to us. The customer’s original module is always returned to them along with the programmed replacement unit if it was sent in for service. For this pre-programmed unit, no core is needed.