Restore Full Functionality to Your HUMMER H2
If you’re dealing with baffling electrical issues in your 2008-2009 HUMMER H2—like power windows with a mind of their own, dashboard lights flickering randomly, or security system faults—the Body Control Module (BCM) is often the culprit. As the central nervous system for your vehicle’s electronics, a failing BCM can cause a cascade of frustrating and seemingly unrelated problems. This replacement Body Control Module, part number 15948439, is the definitive solution to restore order and reliability to your vehicle’s essential functions.
We take the guesswork and dealership hassle out of the equation. This isn’t just a part in a box; it’s a complete, ready-to-install solution. Using our professional Cloning Service, we transfer the critical data from your original BCM to this replacement unit. This means your vehicle’s specific configuration, including mileage and key information, is preserved. The result is a seamless installation without the need for expensive dealer-level programming tools.
Case Study: A Tricky Diagnosis
A customer brought in their ’09 H2 with a complaint that was all over the map. The radio would cut out, the interior dome lights wouldn’t turn off, and the remote keyless entry worked intermittently. They had already replaced the battery and checked all the fuses. A scan showed multiple communication loss codes (U-codes) with various modules. In my shop, I’ve seen this exact pattern dozens of times. Instead of chasing individual components, we went straight for the BCM. We found evidence of water intrusion on the original module’s circuit board—a common failure point. By installing a pre-programmed 2008-2009 HUMMER H2 BCM like this one, we resolved all the issues in a single repair, saving the customer hundreds in diagnostic time and unnecessary parts.
Is Your H2 Showing These Symptoms?
A faulty BCM can manifest in many ways. If you’re experiencing any of the following, it’s a strong indicator that your Body Control Module needs attention:
- ✔ Erratic or non-functional power windows, locks, or mirrors.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security system or anti-theft light is activated, preventing the vehicle from starting.
- ✔ Inconsistent or failed operation of the radio and instrument cluster gauges.
- ✔ False warning messages appearing on the driver information center.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication loss, such as U0140, or specific body codes like B1001 or B1327.
A Straightforward Guide to Your BCM Installation
Installing your new BCM is a manageable job for a confident DIYer. For the 2008-2009 HUMMER H2, the BCM is located on the driver’s side, attached to the firewall. Follow these general steps for a successful replacement:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On the H2, you’ll find the BCM mounted to the firewall, typically to the left of the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, making sure they click into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Post-Installation Checks: Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, radio, etc. Please see the note below regarding potential relearn procedures.
Important Post-Installation Notes
While our cloning service makes this a near plug-and-play repair, some GM vehicles may require simple relearn procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the safety systems and is only required if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure correct brake light and traction control operation.
Disclaimer: Vehicle systems vary. Always have a factory service manual available for your specific model or consult with a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 15948439 and is compatible with a wide range of GM vehicles. It is guaranteed to fit the following models, with programming specific to your VIN:
ACADIA 07-12 Body Control (BCM); (LH dash)
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)
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)
ESCALADE ESV 10 Body Control (BCM); (under steering column)
ESCALADE EXT 10 Body Control (BCM); (under steering column)
EXPRESS/SAVANA VANS 08-12 Body Control (BCM)
G8 08-09 Body Control (BCM); (center dash)
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)
TAHOE 10 Body Control (BCM); (under steering column)
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 / YUKON XL 1500 10 Body Control (BCM); (under steering column)
This module also interchanges with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Frequently Asked Questions
What is a ‘Cloning Service’ and why do I need it?
Cloning is the process of transferring the exact software and vehicle-specific data (like VIN, mileage, and key information) from your old BCM to the replacement unit. This makes the new module a perfect electronic match for your vehicle, avoiding the need for expensive and complicated programming at a dealership.
Do I need to send my original BCM to you?
Yes, for the cloning service to be performed, you will need to ship your original BCM to us after purchase. We will perform the service and ship both your original module and the ready-to-install replacement back to you promptly.
Is this part difficult to install myself?
For someone with basic mechanical skills and tools, this is a very manageable installation. The BCM on the H2 is accessible after removing a lower dash panel. The main challenge is unplugging the connectors carefully. Our step-by-step guide above provides a clear overview of the process.
What if the airbag light comes on after I install it?
This is an infrequent but possible occurrence on some GM vehicles. It simply means the BCM and the airbag module (SDM) need to be electronically ‘re-introduced’. This requires a professional scan tool to perform a quick ‘Setup SDM Primary Key’ procedure. It does not indicate a problem with the part itself.
Is there a core charge for this part?
No, there is no core charge. Our cloning service requires your original module to transfer data. We always return your original BCM along with the programmed replacement unit. We do not keep your old part.