Restore Full Functionality to Your GM Vehicle’s Electronics
If you’re dealing with baffling electrical issues in your 2010 Chevrolet Suburban 1500—like flickering lights, unresponsive power windows, or a security system that has a mind of its own—the problem often traces back to a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen how a faulty BCM can turn a reliable vehicle into a source of constant frustration. The BCM is the central command center for your vehicle’s body electronics, and when it fails, chaos ensues. This isn’t just an inconvenience; it can affect safety systems and even prevent your vehicle from starting.
We offer a dependable and straightforward solution: a high-quality replacement Body Control Module, part number 20921436. The best part? We handle the complicated programming for you. Using our Cloning Service, we flash the module with the latest GM software updates and program it specifically to your vehicle’s VIN before it ever leaves our facility. This means you get a part that is truly plug-and-play, eliminating the need for an expensive trip to the dealership for programming.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, locks, or mirrors working intermittently or not at all.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ Instrument cluster gauges behaving erratically or going dark.
- ✔ A ‘Service Theft System’ or other warning messages appearing on the dash.
- ✔ Communication error codes, such as U0100, U0140, or other ‘U’ series DTCs, when scanned.
- ✔ In some cases, a no-start condition where the engine cranks but won’t fire up.
Case Study: A Tricky Diagnosis
A customer brought in a 2010 Tahoe (which uses the same platform as the Suburban) with a persistent ‘Service StabiliTrak’ light and intermittent radio failure. They had already replaced a wheel speed sensor with no luck. During my diagnosis, I noticed the interior lights would pulse faintly when the issues occurred. A deep scan revealed communication loss codes with multiple modules that all routed through the BCM. Instead of chasing individual components, we focused on the central hub. After installing a VIN-programmed 2010 Suburban 1500 BCM, not only did the StabiliTrak and radio issues vanish, but the customer also reported that his remote start began working again for the first time in a year. It’s a classic example of how a single failing BCM can create a cascade of seemingly unrelated symptoms.
A Straightforward Guide to Your BCM Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- ✔ Locate the BCM: On a 2010 Suburban 1500, the Body Control Module is typically located 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 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 and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, wipers, etc.—to confirm proper operation.
Important Post-Installation Notes
While our cloning service makes this a near plug-and-play repair, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If you see an airbag warning light after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure brake lights and traction control function correctly.
Disclaimer: Procedures can vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Guaranteed Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles. Please verify your part number against the list below. This unit replaces 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, and 95151084.
Fits models including, but not limited to:
- Acadia 07-12
- Avalanche 1500 10
- Caprice 11-13
- Captiva Sport 12
- CTS 08-13
- DTS 06-11
- Enclave 08-12
- Equinox 07-09
- Escalade / ESV / EXT 10
- Express Van 1500/2500/3500 08-12
- G8 08-09
- Hummer H2 08-09
- Impala 06-13
- Lucerne 06-11
- Monte Carlo 06-07
- Outlook 07-10
- Savana Van 1500/2500/3500 08-12
- SRX 07-09
- STS 10
- Suburban 1500 10
- Tahoe 10
- Torrent 07-09
- Traverse 09-12
- Vue 08-10
- Yukon / XL 1500 10
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for our cloning service. It allows us to load the exact software and vehicle-specific options (like keyless entry, lighting packages, etc.) into the BCM, ensuring it communicates perfectly with your vehicle’s other modules right out of the box.
Is this difficult to install myself?
For someone with basic mechanical skills, the physical swap is very manageable. It typically involves removing a dash panel and a few bolts/clips. Since we pre-program the unit, you avoid the most complex part of the job. Just be aware of the potential post-install relearn procedures mentioned above.
What is your core policy? Do I need to send my old BCM back?
Our cloning service is designed for your convenience. You do not need to send us your original module beforehand. After you complete the repair, we ensure your original module is always returned to you along with the programmed replacement unit. We do not keep the core.
Will this fix my ‘Service StabiliTrak’ message?
While a failing BCM can cause StabiliTrak warnings due to communication errors, it’s not the only possible cause. Other issues like faulty wheel speed sensors or a bad steering angle sensor can also trigger this message. A proper diagnosis is always recommended, but if you’re experiencing other BCM-related symptoms, this is a very likely solution.
My original part number is slightly different but on your list. Will this work?
Yes. The extensive list of part numbers in the description are all manufacturer-approved interchanges. As long as your original part number is on our list, this module is the correct replacement for your vehicle.