Are you battling frustrating electrical gremlins in your Buick Enclave or other GM vehicle? Issues like erratic power windows, malfunctioning door locks, strange dashboard warnings, or even a no-start condition can often be traced back to a single component: a failing Body Control Module (BCM). The BCM acts as the central hub for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of confusing and unpredictable problems. This isn’t just an inconvenience; it can affect your vehicle’s security and daily usability.
This is a direct replacement Body Control Module, part number 20921435, designed to restore full functionality to your vehicle. We take the guesswork out of the repair by programming the module specifically to your vehicle’s VIN with the latest GM software updates before it ships. This ensures a seamless integration and gets you back on the road with confidence.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior or exterior lights behaving erratically (staying on, not turning on, or flickering).
- ✔ The security system engaging randomly, causing a no-start condition.
- ✔ The horn or alarm sounding without reason.
- ✔ Incorrect readings on the instrument cluster gauges.
- ✔ Communication error codes when scanned with a diagnostic tool (U-codes).
- ✔ HVAC (heating and air conditioning) controls not responding.
Restoring Function with a Programmed 2008-2012 Enclave Body Control Module
Don’t let a faulty BCM compromise your vehicle’s performance. Our service simplifies the repair process. By providing your VIN at checkout, you receive a module that is ready for installation, loaded with the correct software for your vehicle’s specific options. This eliminates the need for expensive programming at a dealership. This module is a reliable solution for a wide range of GM vehicles, including the Chevrolet Traverse, GMC Acadia, Saturn Outlook, and many more, ensuring broad compatibility.
Post-Installation Steps: While this module is programmed for your vehicle, some systems may require a ‘handshake’ after installation. A Brake Pedal Position Relearn might be necessary for proper brake light and traction control function. Additionally, if your airbag light is on after install, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. These are standard relearn procedures for this type of repair.
This part 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.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic features, such as power windows, locks, lights, security system, wipers, and HVAC controls.
Is this BCM plug-and-play?
Mostly, yes. We program it to your vehicle’s VIN before shipping, which handles the most critical step. However, depending on your specific model, you may need to perform simple relearn procedures for the brake pedal position or airbag system, which may require a professional scan tool.
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program and ship the module without it.
What happens if I don’t replace a failing BCM?
Ignoring a failing BCM can lead to worsening electrical problems, including critical safety issues like malfunctioning lights or a vehicle that won’t start, potentially leaving you stranded.
Will this fix my airbag light?
If the airbag light is on due to a communication fault with the old BCM, this may resolve it. However, after installation, the ‘Setup SDM Primary Key in BCM’ procedure is often required to sync the new BCM with the airbag system and turn off the light.