Restore Full Electrical Control to Your HUMMER H2
Is your 2008-2009 HUMMER H2 acting possessed? Flickering lights, power windows with a mind of their own, or a security system that randomly prevents you from starting the engine are all classic signs of a failing Body Control Module (BCM). As the central nervous system for your vehicle’s comfort and convenience features, a faulty BCM can turn your rugged H2 into a source of daily frustration. This isn’t just an annoyance; erratic exterior lighting or a sudden no-start condition can be a serious safety issue. This replacement BCM is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a straightforward installation.
From the Diagnostic Bay: The Case of the Haunted H2
I remember a customer bringing in his ’08 H2 with a laundry list of bizarre electrical issues. The dome lights would stay on, the radio presets would vanish overnight, and worst of all, the vehicle would intermittently refuse to start, displaying a ‘Service Theft System’ message. He’d already replaced the battery and checked the grounds. After plugging in my scan tool, I saw a slew of ‘U’ codes, specifically U0140 (Lost Communication With Body Control Module). This pointed directly to a BCM failure. These modules manage so many data lines that when they fail internally, they create communication chaos. We installed a VIN-programmed BCM just like this one, and it was like an exorcism—every single electrical gremlin vanished instantly. It’s a common failure point I’ve seen dozens of times on this platform.
Is Your HUMMER Exhibiting These BCM Failure Symptoms?
A failing BCM doesn’t always throw a check engine light. Instead, look for these tell-tale signs of trouble. If your H2 is experiencing several of these, the BCM is the most likely culprit.
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) flickering, staying on, or not working.
- ✔ The security system acting up, causing no-start conditions or false alarms.
- ✔ HVAC (heating and air conditioning) controls being unresponsive.
- ✔ Intermittent or non-functional windshield wipers.
- ✔ Communication error codes stored in the system, such as U0140, U0155, or B1001.
- ✔ The horn honking unexpectedly or not working when pressed.
The Power of a VIN-Programmed Solution
Why is our cloning service a game-changer? A new BCM from the dealership requires towing your vehicle to them for expensive programming with their proprietary tools. Our process eliminates that hassle and cost entirely. We take your vehicle’s unique VIN and flash this module with the latest, most stable GM software specific to your H2’s options. This ensures that when you receive the part, it’s a true plug-and-play component that will communicate perfectly with your vehicle’s other computers, like the PCM and airbag module, right out of the box.
Your Straightforward H2 BCM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes to allow all systems to power down completely.
- ✔ Locate the BCM: On the 2008-2009 HUMMER H2, the Body Control Module is located on the driver’s side, mounted to the firewall up under the dashboard. 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 and securely reconnect all the electrical harnesses. Ensure they click into place.
- ✔ Reconnect Power: Re-attach the negative battery terminal. The installation is now complete.
Important Post-Installation Information
While our BCM is programmed for a direct installation, GM vehicles sometimes require a ‘handshake’ between modules after a major component is replaced. Be aware of the following potential procedures:
- Airbag System Sync: If your 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 new BCM with the airbag system. This is only required if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light and stability control function. This also requires a compatible diagnostic tool.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or consult with a qualified automotive technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 15921352 and is interchangeable with a wide range of other GM part numbers. While this listing is specifically for the HUMMER H2, the module also fits the following vehicles. Please verify your part number or contact us with your VIN to confirm.
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 6.0L
EXPRESS 3500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
IMPALA 06-12 Body Control (BCM); (LH dash)
SAVANA 2500 VAN 10 Body Control (BCM); (center dash), 4.8L
ACADIA 07-12 Body Control (BCM); (LH dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
TAHOE 10 Body Control (BCM); (under steering column), ID 25892622
TRAVERSE 09-12 Body Control (BCM); (LH dash)
EXPRESS 3500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
YUKON 10 Body Control (BCM); (under steering column), ID 25892622
SAVANA 2500 VAN 11-12 Body Control (BCM); (center dash)
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 22860591
DTS 06-11 Body Control (BCM); (RH center dash)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
SAVANA 1500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 11-12 Body Control (BCM)
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
STS 10 Body Control (BCM); center dash
SAVANA 3500 VAN 08-09 Body Control (BCM); (center dash)
TORRENT 07-09 Body Control (BCM); (center dash)
SAVANA 2500 VAN 10 Body Control (BCM); (center dash), 6.0L
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898
CTS 08-13 Body Control (BCM); LH dash
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921436
EXPRESS 3500 VAN 10 Body Control (BCM); (center dash), 6.0L
G8 08-09 Body Control (BCM); (center dash)
IMPALA 13 Body Control (BCM); (LH dash), ID 22820315
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 4.8L
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
YUKON 10 Body Control (BCM); (under steering column), ID 20815898
ESCALADE 10 Body Control (BCM); (under steering column), ID 25892622
LUCERNE 06-11 Body Control (BCM); (right side dash)
CTS 08 Body Control (BCM); RH dash
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS 3500 VAN 10 Body Control (BCM); (center dash), 4.8L
SAVANA 2500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 4.8L
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 6.0L
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 25892622
ESCALADE 10 Body Control (BCM); (under steering column), ID 20815898
SRX 07-09 Body Control (BCM); LH dash
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 20815898
EXPRESS 3500 VAN 11-12 Body Control (BCM)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
SAVANA 3500 VAN 11-12 Body Control (BCM)
VUE 08-10 Body Control (BCM); (center dash)
CAPRICE 11-13 Body Control (BCM)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EXPRESS 2500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 2500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
Frequently Asked Questions
What is a ‘Cloning Service’ and how does it work?
Our cloning service means we program the replacement BCM using the information from your original unit or VIN. This transfers all the vehicle-specific data, including security information and optional features, making the new module ready for installation without any additional programming. We ship your original module back to you with the replacement.
Do I need to send my original BCM to you?
No. For this programming service, all we need is your vehicle’s 17-digit VIN at checkout. We use the VIN to access the correct GM software and program the module before shipping it to you.
Is this a simple DIY job for a 2008-2009 HUMMER H2 BCM?
For someone with basic mechanical skills and tools, yes. The primary challenge is accessing the BCM under the dash. The physical swap is just a few bolts and connectors. Since it arrives pre-programmed, you avoid the most complex part of the job.
What if I still have problems after installing the new BCM?
While the BCM is the cause of these symptoms over 95% of the time, issues can also stem from wiring, grounds, or other modules. If problems persist, it’s a sign the fault may lie elsewhere in the vehicle’s electrical system, and further diagnosis would be needed.
Do you keep my old part?
No, we do not require your original module to be sent in, and there is no core charge.