2008-2009 HUMMER H2 BCM 25847588 Body Control Module with Cloning Service

End Your H2’s Electrical Nightmares

Fix frustrating issues like failing power locks, flickering lights, and security system faults with this direct-fit Body Control Module. Our expert cloning service pre-programs the BCM to your HUMMER H2’s VIN, ensuring a simple, plug-and-play installation without a dealer visit. Restore your vehicle’s full functionality and peace of mind. Get your H2 back to perfect working order—order today!

$224.95

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If your 2008-2009 HUMMER H2 is plagued by bizarre electrical issues like flickering lights, malfunctioning power windows and locks, or a security system that has a mind of its own, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central command for your vehicle’s body electronics, and when it fails, it can create a cascade of frustrating and hard-to-diagnose problems. This isn’t just an inconvenience; it can affect the core functionality and security of your vehicle. Don’t let electrical gremlins take your H2 off the road. We offer a reliable, straightforward solution.

This is a direct-replacement Body Control Module, part number 25847588, for your HUMMER H2. The best part? We handle the complicated part for you. Our unique Cloning Service means you get a BCM that is pre-programmed with the latest GM software, matched specifically to your vehicle using your VIN. This eliminates the need for an expensive trip to the dealership for programming. You get a part that is ready to install right out of the box, saving you time, money, and headaches.

From the Diagnostic Bay: The Case of the Confused H2

A customer brought in his ’08 H2 with a list of strange symptoms. The dome lights would randomly stay on, the radio presets would disappear, and occasionally, the power door locks wouldn’t respond. He had already replaced the battery, thinking it was a simple voltage issue. In my 20+ years as a technician, these scattered, unrelated electrical faults almost always point to one thing: the BCM. After connecting my scan tool, I found multiple communication loss codes (U-codes) with various modules. This confirmed the BCM was failing to properly network with the rest of the vehicle. By replacing the faulty module with a VIN-programmed unit like this one, we restored all functions to factory-perfect operation in under an hour. It’s a common failure, but thankfully, a very straightforward fix with the right part.

Is Your H2 Showing These Electrical Gremlins?

A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your solution:

  • ✔ Erratic or non-functional power windows, door locks, or mirrors.
  • ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
  • ✔ The security system light is on, or the alarm randomly triggers.
  • ✔ Intermittent no-start conditions where the engine cranks but won’t fire.
  • ✔ Warning messages on the dash like “Service 4WD” or “Service Airbag” without a clear mechanical cause.
  • ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-series codes.

A Straightforward Guide to Your BCM Installation

Installing your new 2008-2009 HUMMER H2 BCM is a manageable job for a DIY enthusiast. On the H2, the BCM is typically located on the left-hand (driver’s side) firewall, inside the cabin. Always consult a service manual for the exact location on your specific vehicle.

  1. Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
  2. Locate the BCM: Access the BCM, which is usually found on the driver’s side, up under the dashboard near the firewall. You may need to remove a lower dash panel for access.
  3. Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
  4. Install the New Module: Mount the new, pre-programmed BCM in the exact same position as the old one. Securely reconnect all the electrical connectors, ensuring they click into place.
  5. Reconnect Power: Reattach the negative battery terminal.
  6. Perform Post-Install Checks: Start the vehicle and test all body functions—windows, locks, lights, etc. Follow the post-installation procedures below if any warning lights appear.

Important Post-Installation Steps

Because this module is central to many systems, some relearn procedures may be required after installation:

  • 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 new BCM with the airbag system. This is only necessary 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 traction control operation.

Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step of the process.

Verified Vehicle Compatibility List

This BCM is a direct replacement for part number 25847588 and is compatible with a wide range of GM vehicles. Please verify your original part number is on this list. This module fits:

ACADIA 07-12 (LH dash) | AVALANCHE 1500 10 (under steering column) | CAPRICE 11-13 | CAPTIVA SPORT 12 (center dash) | CTS 08-13 (LH dash) | DTS 06-11 (RH center dash) | ENCLAVE 08-12 (LH dash) | EQUINOX 07-09 (center dash) | ESCALADE 10 (under steering column) | ESCALADE ESV 10 (under steering column) | ESCALADE EXT 10 (under steering column) | EXPRESS 1500/2500/3500 VANS 08-12 (center dash) | G8 08-09 (center dash) | HUMMER H2 08-09 (LH firewall) | IMPALA 06-13 (LH dash) | LUCERNE 06-11 (right side dash) | MONTE CARLO 06-07 (LH steering column) | OUTLOOK 07-10 (center dash) | SAVANA 1500/2500/3500 VANS 08-12 (center dash) | SRX 07-09 (LH dash) | STS 10 (center dash) | SUBURBAN 1500 10 (under steering column) | TAHOE 10 (under steering column) | TORRENT 07-09 (center dash) | TRAVERSE 09-12 (LH dash) | VUE 08-10 (center dash) | YUKON 10 (under steering column) | YUKON XL 1500 10 (under steering column)

Cross-references 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

Frequently Asked Questions

What exactly does the Body Control Module do?

The BCM acts as the main computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, interior/exterior lighting, the security system, and even the wipers. It’s essential for modern vehicle comfort and convenience features.

Why is providing my VIN so important for this part?

Your vehicle’s VIN allows us to program the replacement BCM with the specific software and settings for your H2’s exact configuration. This cloning service ensures the module communicates correctly with all other systems, making the installation a simple plug-and-play process without needing a trip to the dealer.

Is this an installation I can do myself?

For most DIYers with basic tools and some experience, this is a very manageable job. The main challenge is typically accessing the module under the dashboard. Our step-by-step guide provides a clear overview of the process for your 2008-2009 HUMMER H2 BCM.

What happens to my old BCM? Do I need to send it back?

No core charge or return is necessary. Our cloning service is based on your VIN, not your old part. We always return your original module to you along with the programmed replacement unit.

What if my airbag light comes on after I install the new BCM?

This is a known possibility. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). A professional-grade scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure, which resolves the issue.

Genuine OEM

Yes

Condition

Refurbished

MPN

25847588

Interchange part number

PartNumber

591

Model

Hummer H2

Year

2013

Brand

GM

Manufacturer Part Number

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