Restore Your Yukon’s Electrical System with a Reliable, Programmed BCM
If you’re dealing with baffling electrical problems in your 2010 GMC Yukon—like power windows with a mind of their own, flickering dash lights, or a security system that prevents your truck from starting—you’ve likely pinpointed the culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can turn your reliable SUV into a source of daily frustration. This isn’t just an inconvenience; it can be a serious safety issue when lights, locks, or other critical systems behave unpredictably.
This is a direct-fit replacement BCM, part number 20921436, that solves these issues permanently. We take the guesswork and high dealership costs out of the equation with our professional cloning service. Simply send us your original BCM, and we will transfer all the critical, vehicle-specific data to this replacement unit. This ensures that your mileage, key fob programming, and factory-installed options work seamlessly upon installation. The result is a true plug-and-play solution that gets you back on the road without needing an expensive trip to the dealer for programming.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2010 Yukon that came into my shop with a list of symptoms that sounded like something out of a horror movie. The radio would switch stations on its own, the interior dome lights would stay on, and the horn would randomly honk. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a slew of communication error codes (U-codes) pointing to the BCM. A failing internal processor was sending garbage data across the vehicle’s network, causing chaos. Instead of a multi-day, thousand-dollar repair at the dealership, we used our cloning service. We transferred his data to a new BCM, and he installed it himself in under an hour. The ‘ghost’ was gone, and his Yukon was back to normal. This service is the most efficient fix I’ve found for these common GM BCM failures.
Is Your Yukon Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on or not working at all.
- ✔ The security or anti-theft light is flashing, causing a no-start condition.
- ✔ Inconsistent or failed communication with diagnostic scan tools.
- ✔ Multiple communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or U0100.
- ✔ Intermittent operation of the radio, climate controls, or instrument cluster gauges.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. Wait a few minutes for the system capacitors to discharge.
- ✔ Locate the BCM: In your 2010 Yukon, the Body Control Module is typically found under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed to release. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, programmed BCM in the same location and securely reconnect all the electrical connectors. You should hear a ‘click’ as they lock into place.
- ✔ Reconnect and Test: Reinstall any panels you removed and reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, and radio—to confirm the repair was successful.
Important Post-Installation Steps
Our cloning service handles the heavy lifting, but some GM vehicles require a final handshake between modules. Be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure must be done with a compatible professional scan tool. This re-establishes communication between the BCM and the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position relearn might be necessary to ensure brake lights and the traction control system function correctly.
Disclaimer: Vehicle systems vary. Always have a factory service manual or a qualified professional available for reference.
Guaranteed Vehicle Compatibility
This module is a direct replacement for part number 20921436 and other interchangeable part numbers listed below. It is guaranteed to fit the following vehicles (please verify your specific options):
Cross-Reference 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.
What exactly is a ‘cloning service’?
What exactly is a ‘cloning service’?
Cloning is a process where we transfer the exact software and vehicle-specific data (like VIN, mileage, and key information) from your original BCM to this replacement unit. This makes the new module a perfect digital copy of your old one, allowing it to be installed without any additional programming.
Do I need to take my truck to a dealer after installation?
No! Our cloning service is designed to eliminate the need for dealer programming. The module arrives ready to be installed. In rare cases, a simple relearn procedure might be needed for the airbag or brake systems, which many independent shops can perform.
How does the process work after I buy?
After you complete your purchase, we will provide you with instructions to ship your original BCM to us. Once we receive it, our technicians will perform the cloning service and ship both your original module and the newly programmed replacement back to you, typically within 1-2 business days.
What happens to my old BCM?
We always return your original BCM along with the programmed replacement unit. We do not keep your old part. This is for your records and peace of mind.
Is this a guaranteed fix for my vehicle’s electrical problems?
If your vehicle’s symptoms and diagnostic codes point to a failed BCM, this part is the correct solution. As experienced technicians, we know these modules are a common failure point. However, always ensure a proper diagnosis has been performed, as other issues like wiring faults can sometimes mimic BCM failure.