Programmed 2009-2012 Traverse BCM 20935349 Body Control Module

Restore Your Traverse’s Electronics with a Plug-and-Play Solution

Are you dealing with baffling electrical gremlins in your 2009-2012 Chevrolet Traverse? Intermittent power windows, flickering dash lights, a security system that acts up, or even a vehicle that refuses to start can all point to a single culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s comfort and convenience features, a faulty BCM can make driving a frustrating experience. In my 20+ years as a technician, I’ve seen how a bad BCM can mimic a dozen other problems, leading to wasted time and money on incorrect diagnoses.

This is your direct, reliable fix. We offer a genuine-quality Body Control Module that arrives at your door fully programmed to your vehicle’s specific VIN. Simply provide us with your VIN after purchase, and our experts will flash the module with the latest GM factory software. This critical step ensures all your vehicle’s options are recognized and function correctly, eliminating the need for an expensive trip to the dealership for programming. This is the smart, efficient way to get your Traverse back to 100%.

Common Signs of a Failing BCM

If your Traverse is exhibiting these symptoms, a failing Body Control Module is the likely cause. Don’t let these issues get worse; a failing BCM can eventually lead to a no-start condition, leaving you stranded.

• ✔ Erratic or non-functional power windows, door locks, or interior lights.
• ✔ Horn honking unexpectedly or not working at all.
• ✔ Security system faults or anti-theft light staying on.
• ✔ False warnings on the instrument cluster (e.g., ‘Service Airbag’).
• ✔ Remote keyless entry (RKE) failure.
• ✔ Communication errors with a diagnostic scan tool.
• ✔ Intermittent no-start or no-crank conditions.

A Straightforward Guide to Installation

Replacing the 2009-2012 Traverse BCM is a manageable job for a confident DIYer. For your specific vehicle, the BCM is typically located on the left-hand (driver’s) side of the dash.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes before starting work.
2. Locate the BCM: On the Traverse, you’ll usually find the BCM under the driver’s side dashboard, often near the steering column. You may need to remove a lower dash panel for access.
3. Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be depressed to be released. Avoid pulling on the wires. Once disconnected, unbolt or unclip the old module and remove it.
4. Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click into place.
5. Post-Installation Procedures: Reconnect the battery terminal. You MUST now perform the required relearn procedures as detailed below. This is not an optional step.

Important: After You Install

To ensure full functionality and safety, a couple of final steps are required after installing your new BCM. These procedures sync the new module with your vehicle’s other critical systems.

• Airbag System Reset: The airbag warning light will likely be on. You must use a compatible professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This re-establishes communication between the BCM and the airbag system’s Sensing and Diagnostic Module (SDM).
• Brake Pedal Position Sensor Relearn: Some vehicles require the Brake Pedal Position (BPP) sensor to be recalibrated after BCM replacement. This ensures the brake lights and stability control system function correctly. This is also done with a capable scan tool.

Verified Vehicle Compatibility

This module is a direct replacement for part number 20935349 and a wide range of other GM part numbers. It is guaranteed to fit the following vehicles (please verify your specific options):