Restore Full Functionality to Your GM Vehicle
Are you battling bizarre electrical issues in your 2009-2012 Chevrolet Traverse? Intermittent power windows, flickering dash lights, malfunctioning door locks, or a security system that prevents your vehicle from starting are all classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and seemingly unrelated problems. This isn’t just a replacement part; it’s a comprehensive, ready-to-install solution designed to get you back on the road without the exorbitant costs and scheduling headaches of a dealership visit.
This replacement BCM, compatible with part number 25847588, is the definitive fix for these issues. We take the guesswork out of the repair by providing a professional cloning service. Simply provide us with your vehicle’s VIN after purchase, and our experts will program the module with the latest GM software specific to your Traverse. This ensures seamless communication with your vehicle’s other systems right out of the box, making the installation process as straightforward as possible for both seasoned mechanics and determined DIYers.
A Technician’s Notebook
I remember a 2011 Traverse that came into my bay with a truly baffling set of symptoms. The radio would turn on and off by itself, the driver’s side power window wouldn’t work, and the owner reported it would occasionally not start, with the security light flashing. A scan showed a slew of U-codes, indicating a network communication breakdown. Instead of chasing each individual fault, experience pointed me straight to the BCM. After swapping in a pre-programmed unit like this one, every single issue vanished. It’s a powerful reminder that when multiple, unrelated electronic systems act up, the BCM is often the root cause.
Is Your Vehicle Showing These Symptoms?
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security or anti-theft system light is illuminated, causing a no-start condition.
- ✔ Your key fob has stopped working reliably.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ Wipers behaving unpredictably or not parking in the correct position.
A Straightforward Guide to 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 before beginning.
- ✔ Locate the BCM: On the 2009-2012 Traverse, the Body Control Module is typically located on the left-hand (driver’s) side of the dashboard, often behind the lower dash panel.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unfasten any bolts or clips holding the module in place and remove it.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical connectors. Ensure they click into place.
- ✔ Reconnect Power: Re-attach the negative battery terminal.
- ✔ Perform Final Checks: Start the vehicle and test all body functions—windows, locks, lights, wipers, etc.—to confirm the repair was successful. Note the post-installation procedures below, as some systems may require recalibration.
Important Post-Installation Information
While our cloning service makes this a near plug-and-play repair, some GM vehicles require a ‘handshake’ between modules after installation. Be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional-grade scan tool. This syncs the BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure correct brake light and traction control operation, a brake pedal position sensor recalibration may be needed. This can also be done with a compatible diagnostic tool.
Disclaimer: Specific requirements can vary. Always refer to a factory service manual for your exact model or consult with a qualified technician.
Verified Vehicle Compatibility
This module is a direct replacement for part number 25847588 and a wide range of other GM part numbers. It fits an extensive list of vehicles. Please verify your part number or match your vehicle from the list below:
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/SAVANA VANS 08-12 (See original list for specific engine/year combinations)
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)
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
This module also replaces 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, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
Frequently Asked Questions
What is a cloning service?
Our cloning service involves transferring the essential vehicle-specific data from your original BCM to the replacement unit. This ensures the module is perfectly matched to your vehicle’s VIN and options, preventing the need for expensive dealership programming after installation.
Do I need to send my original BCM to you?
No, our service is not a repair of your old module. We program a replacement unit using the VIN you provide. Your original module will be returned to you along with the newly programmed BCM, as we do not require a core.
Is this a difficult part to replace myself?
For someone with basic mechanical skills, this is a very manageable job. The primary challenge is accessing the module’s location within the dash. Our pre-programming service eliminates the most complex part of the job—the software configuration.
Will this fix my ‘Service StabiliTrak’ or ‘Service Traction Control’ message?
While a faulty BCM can contribute to these warnings by disrupting communication, these messages can also be caused by other components like wheel speed sensors or the steering angle sensor. A full diagnostic scan is recommended, but if you have other BCM-related symptoms, this is a very likely solution.
What if my original part number is not 25847588 but is on the list?
If your part number is included in our extensive cross-reference list, this module will function as a direct replacement. We program it to your VIN, ensuring it works correctly regardless of the original part number.