Restore Full Electrical Control and End Frustrating Glitches
Are you dealing with bizarre electrical issues in your 2010 GMC Yukon XL 1500? Flickering lights, malfunctioning power windows, a security system that acts up, or even a vehicle that refuses to start can all point to one culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can create a cascade of confusing and unpredictable problems. This isn’t just an annoyance; it’s a matter of reliability and safety.
This replacement Body Control Module, part number 20815898, is the definitive solution. We take the guesswork and dealer-dependency out of the equation with our professional cloning service. Simply send us your original BCM, and we will transfer all the critical data—including key information and vehicle-specific configurations—to this replacement unit. We also ensure it’s loaded with the latest GM software updates. This process makes installation significantly simpler, getting your truck back to perfect working order without the high costs and scheduling hassles of a dealership visit.
Case Study: A Tricky Diagnosis
A customer brought in a 2010 Tahoe with a classic ‘ghost in the machine’ problem. The radio would turn off randomly, the driver’s side window wouldn’t work, and occasionally the dash lights would all flash on startup. They had already replaced the battery and checked the alternator. After hooking up my diagnostic scanner, I saw multiple U-codes (U0140, U0155) indicating a loss of communication with the BCM. Instead of a complex wiring chase, we started with the most likely source. After installing a cloned BCM like this one, every single electrical gremlin vanished. It’s a powerful reminder that when multiple, unrelated electronic systems fail at once, the BCM should be your primary suspect.
Is Your GM Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution.
- ✔ Intermittent or non-functional interior and exterior lights.
- ✔ Power windows, locks, or mirrors operating erratically or not at all.
- ✔ The security system alarm sounding for no reason or preventing the engine from starting.
- ✔ Warning lights on the dashboard (like ABS, Airbag, or Traction Control) illuminating without a clear cause.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss, such as U0100, U0140, or B1001.
- ✔ Complete no-start condition where the starter doesn’t even engage.
A Straightforward Guide to Your BCM Installation
Our cloning service makes this repair accessible for both seasoned mechanics and capable DIYers. Here is a general outline of the installation process for a 2010 Yukon XL 1500 BCM.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On the Yukon/Tahoe/Suburban platform, the BCM is typically located under the driver’s side of the dashboard, near the steering column.
- Remove Trim Panels: You may need to remove the lower dash panel or knee bolster to gain clear access to the module.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Battery: Re-attach the negative battery terminal.
- Perform Relearns (If Needed): Start the vehicle and check all functions. As noted below, you may need to perform a couple of simple relearn procedures if specific warning lights appear.
Important Post-Installation Information
While our cloning service handles the heavy lifting, some GM vehicles require a final handshake between modules after installation. Be aware of the following potential procedures:
- Airbag System Sync: If the airbag light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be done with a compatible professional scan tool. This is a security measure to ensure the systems are correctly paired.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to satisfy the traction control system.
Disclaimer: These procedures can vary. Always refer to a factory service manual or a professional technician for vehicle-specific instructions.
Verified Vehicle Compatibility List
This BCM is a direct replacement for part number 20815898 and is compatible with a wide range of GM vehicles. It also interchanges with numerous other part numbers, including: 15819552, 15921352, 20864767, 22860591, 25892622, and many more. Please verify your part number or contact us with your VIN to confirm fitment for models such as:
- Acadia (2007-2012)
- Avalanche 1500 (2010)
- CTS (2008-2013)
- Enclave (2008-2012)
- Escalade, ESV, EXT (2010)
- Express / Savana Vans (2008-2012)
- Impala (2006-2013)
- Suburban 1500 (2010)
- Tahoe (2010)
- Traverse (2009-2012)
- Yukon & Yukon XL 1500 (2010)
Frequently Asked Questions
What is the cloning service and why do I need it?
Cloning is a process where we transfer the exact software and vehicle-specific data from your old BCM to the replacement unit. This ensures compatibility with your vehicle’s options and security system, making the installation process much simpler and avoiding a costly trip to the dealer for programming.
Do I need to send my original BCM to you?
Yes, for the cloning service to be successful, we require your original module. This allows us to perform a perfect data transfer. We will ship your original module back to you along with your ready-to-install replacement.
Will this fix my specific problem?
This part is a solution for failures within the BCM itself. While it corrects a wide range of common electrical issues, it’s essential to properly diagnose your vehicle. If you have multiple, seemingly unrelated electrical problems, a faulty 2010 Yukon XL 1500 BCM is a very strong possibility.
What tools are needed for the post-installation procedures?
The Brake Pedal Position Relearn can sometimes be done without tools, but the Airbag System Sync (if required) necessitates a professional-grade bidirectional scan tool capable of performing GM-specific functions. Many local repair shops can perform this service for you.
Is this a new or used part?
This is a high-quality, tested, and verified used component. Each module is thoroughly inspected to ensure it meets our strict performance standards before being programmed for your vehicle.