Tired of Electrical Gremlins in Your Traverse?
Are you dealing with bizarre electrical issues in your 2009-2012 Chevrolet Traverse? One minute the power windows work, the next they don’t. Maybe the security light is flashing for no reason, or you’re facing an intermittent no-start condition that leaves you stranded. As a technician with over 20 years of experience, I’ve seen these exact frustrations countless times. The culprit is often a failing Body Control Module (BCM)—the electronic brain that manages your vehicle’s comfort and security features.
A faulty BCM can turn your reliable SUV into a source of constant headaches. Instead of spending a fortune at the dealership for a new module and programming fees, we offer a straightforward, cost-effective solution. This is a replacement BCM featuring our professional Cloning Service. We transfer the exact data from your original module to this replacement unit, making the installation truly plug-and-play.
A Technician’s Notebook
I remember a 2011 Traverse that came into the shop with a laundry list of complaints from the owner: the radio would randomly shut off, the dome lights would flicker, and sometimes the key fob wouldn’t work. We checked grounds, wiring, and fuses—everything looked perfect. A deep scan revealed intermittent communication loss codes with the BCM (U0140). Instead of just replacing it, we sent the original module for data cloning. The customer installed the cloned replacement BCM in his driveway in under 30 minutes. All the strange electrical problems vanished instantly. It’s a classic case where pinpointing the BCM as the root cause saves hundreds in diagnostic time and parts-swapping.
Is Your Traverse Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights staying on or not turning on.
- ✔ The security system light is illuminated, or the vehicle won’t start.
- ✔ The key fob has stopped working reliably.
- ✔ Multiple unrelated warning lights on the dashboard.
- ✔ Diagnostic trouble codes (DTCs) such as U0140, B1001, or B1325 stored in the system.
A Straightforward Guide to Your BCM Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the BCM: On the 2009-2012 Traverse, the Body Control Module is typically located on the left (driver’s) side of the dashboard, often behind the lower trim panel near the steering column.
- ✔ Remove the Old Module: Carefully disconnect the electrical connectors. 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, cloned BCM in the same location and reconnect all electrical connectors, ensuring they click securely into place.
- ✔ Power Up: Reconnect the negative battery terminal. Your vehicle’s data is already on the module, so no further programming is required.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, some GM vehicles may require a simple relearn procedure to sync all systems perfectly. This is normal. The most common are:
- Airbag System Sync: If your airbag light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure may be needed. This requires a professional scan tool and ensures the safety systems are correctly communicating.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary for proper brake light and traction control operation.
Guaranteed Fitment for Your Vehicle
This BCM is a direct replacement for part number 20839063 and is compatible with a wide range of GM vehicles. Please verify your part number or contact us with your VIN. This module fits the following models:
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
CAPRICE 11-13 Body Control (BCM)
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435, 20921436, or 22860591
CTS 08-13 Body Control (BCM); LH dash
DTS 06-11 Body Control (BCM); (RH center dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EQUINOX 07-09 Body Control (BCM); (center dash)
ESCALADE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 08-12 Body Control (BCM)
EXPRESS 3500 VAN 08-12 Body Control (BCM)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-13 Body Control (BCM); (LH dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SAVANA 1500 VAN 08-12 Body Control (BCM); (center dash)
SAVANA 2500 VAN 08-12 Body Control (BCM)
SAVANA 3500 VAN 08-12 Body Control (BCM)
SRX 07-09 Body Control (BCM); LH dash
STS 10 Body Control (BCM); center dash
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TORRENT 07-09 Body Control (BCM); (center dash)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
VUE 08-10 Body Control (BCM); (center dash)
YUKON 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
Frequently Asked Questions
How does the Cloning Service work?
After you place your order, you will ship your original BCM to us. Our technicians will extract the vehicle-specific data and flash it onto the replacement module. We then ship both your original module and the ready-to-install replacement back to you. This process ensures 100% compatibility without the need for dealer programming.
Why do you need my VIN?
We use your Vehicle Identification Number (VIN) to access the latest GM software updates for your specific vehicle. This ensures the cloned module we send you has the most current and stable firmware available, often correcting factory bugs.
Do I need special tools for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn procedures typically require a bidirectional professional scan tool. Many local repair shops can perform these relearns for you if needed. However, they are often not required if no new warning lights appear after installation.
Is this a difficult part for a DIYer to replace?
For most of the listed vehicles, including the Traverse, the BCM is accessible behind a lower dash panel. With basic hand tools and our plug-and-play cloning service, it is a very manageable job for a DIY enthusiast. The biggest challenge is often just accessing the module’s location.
What happens to my old BCM?
Your original module is always returned to you along with the programmed replacement unit. We do not keep your original part. This is for your records and peace of mind.