Is Your GM Vehicle Experiencing Strange Electrical Problems?
If your Chevy Tahoe, Suburban, Express Van, or other compatible GM vehicle is plagued by frustrating electrical gremlins, a failing Body Control Module (BCM) is often the culprit. The BCM acts as the central nervous system for your vehicle’s body electronics, controlling everything from your power windows and locks to your interior lights and security system. When it fails, it can cause a cascade of bizarre and unpredictable issues that can be difficult to diagnose.
From the Diagnostic Bay
We had a 2010 Chevy Tahoe come in with the complaint of intermittent “Service Stabilitrak” and “Service Traction Control” messages, along with the radio display flickering on and off. The owner had already replaced the battery and checked the grounds. After connecting our diagnostic tool, we saw multiple communication loss codes with various modules. All signs pointed to a failing BCM. Instead of a costly trip to the dealer for a new module and programming, we installed one of our VIN-programmed units. The communication errors vanished, the dash warnings went away, and all electronics functioned perfectly on the first try. It’s a common story, and this part is the straightforward solution.
Common Symptoms of a Failing GM BCM
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior dome lights or exterior lights staying on or not turning on.
- ✔ Erratic instrument cluster behavior or warning lights (like ABS, Airbag, or Security).
- ✔ Key fob not responding or vehicle security system preventing startup.
- ✔ Wipers or radio malfunctioning without reason.
- ✔ A/C and heater controls not responding correctly.
A True Plug-and-Play Solution for Your 2010 Tahoe Body Control Module
Don’t let a faulty BCM keep your vehicle sidelined. This replacement Body Control Module, part number 20921436, is the definitive fix for these issues. We take the guesswork and hassle out of the repair by pre-programming the module to your vehicle’s specific VIN before it ships. This means no expensive trips to the dealership for calibration. Using the latest GM software updates, we ensure this module communicates flawlessly with your vehicle’s other systems right out of the box.
Simple Process:
- Place your order for this BCM.
- Provide us with your vehicle’s 17-digit VIN.
- We program the module with the latest software specific to your vehicle.
- You receive a module that is ready for installation.
In most cases, installation is as simple as disconnecting the battery, swapping the old module for the new one, and reconnecting the battery. However, please note that on some vehicles, a “Brake Pedal Position Relearn” or “Setup SDM Primary Key in BCM” (for the airbag system) may be required using a professional scan tool if related warning lights appear after installation.
This BCM is a direct replacement for the following 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
Extensive Vehicle Fitment:
This module fits a wide range of GM vehicles, 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 / Savana Vans (08-12), G8 (08-09), Hummer H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), SRX (07-09), STS (10), Suburban 1500 (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon / Yukon XL 1500 (10). Please verify your part number to ensure compatibility.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls electronic accessories related to the vehicle’s body. This includes power windows, locks, lights, wipers, the security system, and more.
Is this BCM difficult to install?
For most DIY mechanics, the physical installation is straightforward. It typically involves disconnecting the battery and swapping the module, which is usually located under the dash. Since we program it to your VIN, you avoid the complex step of dealer programming.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
How do I provide my VIN number for programming?
After you complete your purchase, you will need to send us a message with your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information to program the module correctly.
What if my airbag light is on after installation?
If the airbag light appears, it means the new BCM needs to be synced with the airbag system’s computer (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a standard security procedure on many GM vehicles.