Restore Full Electrical Function to Your HUMMER H2
Is your 2008 or 2009 HUMMER H2 suffering from strange and unpredictable electrical problems? Issues like flickering interior lights, power windows that won’t respond, malfunctioning door locks, or a security system that acts up are often traced back to a single point of failure: the Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can create a cascade of frustrating issues. This replacement Body Control Module, part number 15837419, is the definitive solution to restore your H2’s systems to perfect working order.
We take the guesswork and hassle out of the replacement process. Unlike a generic module from a parts store or salvage yard, this BCM is professionally programmed specifically for your vehicle using your VIN. This critical step ensures that the module communicates correctly with all other computers in your truck, recognizes the specific options your H2 was built with, and functions exactly as the original did from the factory. No expensive trips to the dealership for programming are required.
From the Diagnostic Bay
We had a 2009 H2 come into the shop with a complaint that was driving the owner crazy. The interior dome lights would randomly turn on while driving, the radio would sometimes lose power, and the driver’s side window would only work intermittently. The battery and alternator checked out fine, and there were no obvious wiring issues. After hooking up a high-level scan tool, we saw a flood of communication error codes all pointing to the BCM. A failing internal processor was causing it to send corrupt data across the network. We installed a VIN-programmed BCM, and instantly, all the ghost-like electrical problems vanished. It’s a perfect example of how one faulty module can disrupt the entire vehicle.
Why Choose Our 2008-2009 HUMMER H2 BCM?
Replacing a critical electronic component can be intimidating, but we make it simple. By providing us with your Vehicle Identification Number (VIN) during checkout, you receive a module that is loaded with the latest GM software updates and configured for your exact vehicle. This ensures a seamless installation process and reliable, long-term performance. This module is a direct replacement for a wide range of original part numbers, guaranteeing compatibility.
Common Symptoms of a Failing BCM
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not turning on.
- ✔ The security system light is illuminated, or the vehicle won’t start due to an anti-theft issue.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Instrument panel gauges behaving erratically or displaying warning lights.
- ✔ Problems with the heating and A/C blower motor controls.
Installation and Post-Install Considerations
The BCM on the 2008-2009 HUMMER H2 is typically located on the left-hand (driver’s side) firewall area. Installation involves disconnecting the battery, accessing the module, carefully removing the electrical connectors, and swapping the old unit for this new one. While the VIN programming handles the majority of the setup, some vehicles may require additional steps after installation:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional diagnostic tool. This syncs the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be necessary for proper brake light and traction control operation.
Always consult a factory service manual or a qualified technician if you are unsure about any part of the installation process.
This module 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
Do I need to have this BCM programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide your vehicle’s VIN at checkout, and the module will arrive ready for installation, loaded with the correct software for your H2’s specific options.
Where is the BCM located on my 2008-2009 HUMMER H2?
The Body Control Module on this specific model is located inside the cabin, attached to the left-hand (driver’s side) firewall, often near the steering column or emergency brake pedal assembly.
What happens if I forget to provide my VIN?
We cannot ship the module without your VIN. The programming is essential for the part to function correctly in your vehicle. Our customer service team will contact you to retrieve the VIN before we can process and ship your order.
Will this fix my ‘Service Security System’ message?
A faulty BCM is a very common cause of security system problems, including warning messages and no-start conditions. The BCM is a key component of the vehicle’s immobilizer system, so replacing a bad one will often resolve these issues.
What tools are needed for the post-installation procedures you mentioned?
Procedures like the Airbag System Sync (SDM key setup) require a professional-grade, bi-directional scan tool. Basic code readers cannot perform these specific functions. If required, this step must be performed by a qualified automotive shop.
Is there a core charge for this part?
No, there is no core charge. You can keep your original module without needing to send it back to us.