Restore Your Hummer’s Electrical System with a Plug-and-Play Solution
Are you chasing down frustrating electrical gremlins in your Hummer H2? One minute the A/C works, the next it doesn’t. The power locks have a mind of their own, and a persistent airbag light stares back at you from the dash. These aren’t separate problems; they’re classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s comfort and security features, a faulty BCM can cause widespread, intermittent chaos. This module, part number 15137395, is the definitive, reliable fix for your 2003-2007 Hummer H2, arriving expertly programmed to your vehicle’s VIN for a hassle-free, direct-fit installation.
Case Study: A Tricky Diagnosis
I remember a 2006 H2 that came into my bay with a complaint of the security light flashing and a no-crank condition that would happen randomly. The owner had already replaced the battery and checked the starter. Diagnostics showed a communication loss code (U-series) that would come and go. Instead of shotgunning parts, we focused on the BCM. These modules are notorious for internal solder joint failures that cause intermittent connections. After swapping in a pre-programmed BCM like this one, the communication was restored, the security system stabilized, and the H2 started reliably every time. It’s a fix I’ve performed hundreds of times on these GM platforms.
Is Your H2 Showing These Electrical Faults?
A failing BCM doesn’t always trigger a check engine light. Instead, look for these common performance issues that point directly to a faulty module:
- ✔ The HVAC blower motor works intermittently or has completely stopped.
- ✔ Power windows, door locks, or interior lights operate erratically or not at all.
- ✔ The factory security system acts up, causing a no-start or killing the engine.
- ✔ An airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- ✔ The instrument cluster displays strange warnings or loses power.
- ✔ Wipers get stuck or won’t turn on.
Your Straightforward 5-Minute Installation Guide
Getting your Hummer back to 100% doesn’t require a trip to the dealership. This installation is simple enough for any DIY enthusiast. The BCM on the H2 is located on the driver’s side, to the left of the steering column.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- Locate the Module: Find the BCM mounted to the dash support bracket on the left-hand side of the dash. It’s a black plastic box with several large multi-pin connectors.
- Swap the Part: Carefully unplug the electrical connectors. They have locking tabs, so be sure to depress them fully before pulling. Unbolt or unclip the old module and install the new one in its place.
- Reconnect and Test: Re-attach the electrical connectors, ensuring they click securely into place. Reconnect the battery terminal.
- Final Check: Start your H2 and test all functions—lights, windows, locks, and HVAC. In most cases, the job is done. If an airbag light persists, a professional scan tool may be needed for an ‘SDM Key Relearn’ procedure.
Guaranteed Fitment for Your GM Vehicle
This Body Control Module is a direct replacement for part number 15137395 and is interchangeable with a wide range of other GM part numbers, ensuring perfect function. While it is the primary solution for the 2003-2007 Hummer H2 BCM, it also fits many other GM trucks and SUVs, including:
- HUMMER H2: 2003-2007
- Cadillac Escalade, ESV, EXT: 2003-2006
- Chevrolet Avalanche, Silverado, Suburban, Tahoe: 2003-2007 (check specific options)
- GMC Sierra, Yukon, Yukon XL: 2003-2007 (check specific options)
- Chevrolet Express & GMC Savana Vans: 2004-2007 (with commercial package)
Frequently Asked Questions
Do I need to take this BCM to the dealer for programming?
No. We program the module to your vehicle’s specific VIN before shipping. It arrives ready for plug-and-play installation, saving you time and money.
Where is the BCM located on a 2005 Hummer H2?
The BCM is located on the driver’s side of the vehicle, mounted to a support bracket to the left of the steering column, deep in the dash.
What if the airbag light is on after I install the new BCM?
This can happen occasionally. It means the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A mechanic with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to clear the light.
Is there a core charge? Do I have to send my old part back?
No, there is absolutely no core charge. You can keep or discard your old module without any hassle.
Will this fix my intermittent no-start problem?
If your no-start is related to the factory security system (Passlock/VATS), a failing BCM is a very common cause. This module is designed to resolve those security communication errors.