Restore Full Control Over Your GM Vehicle’s Electronics
Is your Savana 2500 or other GM vehicle acting possessed? Flickering lights, intermittent power windows, a dead instrument cluster, or a frustrating no-start condition can often be traced back to one component: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, when the BCM goes down, it can cause a cascade of bizarre and unpredictable issues. This isn’t just an annoyance; it can be a serious safety concern. Don’t let electrical gremlins keep your work van or family SUV off the road.
This is a direct-fit replacement BCM, part number 25847589, that solves these problems without the exorbitant cost and hassle of a dealership visit. We offer a professional VIN-based cloning service. Simply provide your vehicle’s VIN during checkout, and our technicians will program this module with the latest GM software specific to your vehicle’s configuration. This means when the part arrives, it’s ready for installation, saving you hundreds in programming fees and valuable time.
A Technician’s Notebook: The Van That Had a Mind of Its Own
I remember a 2011 Express 2500 that came into the bay with the weirdest collection of symptoms I’d seen in a while. The driver said the radio would change stations on its own, the dome light would randomly turn on while driving, and sometimes the power locks wouldn’t respond. He’d already replaced the battery and checked all the fuses. A scan showed a handful of U-codes (U0140, U0155) pointing to a loss of communication with the BCM. Instead of a complex wiring issue, the root cause was internal failure of the original BCM. Installing a VIN-programmed 2008-2012 Savana 2500 BCM like this one resolved every single issue in one go. It’s a classic case of what happens when the vehicle’s ‘brain’ for body functions gets scrambled.
Common Symptoms of a Failing GM BCM
A faulty BCM can manifest in numerous ways. If your vehicle is experiencing any of the following, a failing module is a likely culprit. Keep an eye out for associated Diagnostic Trouble Codes (DTCs) like U0140, B1001, or other communication and body circuit faults.
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights) staying on or not turning on.
- ✔ The security system preventing the vehicle from starting (anti-theft light flashing).
- ✔ Horn sounding unexpectedly or not working when pressed.
- ✔ Inaccurate or dead gauges on the instrument panel.
- ✔ A persistent ‘Service Electrical System’ message on the dash.
- ✔ Complete no-start or no-crank condition despite a good battery and starter.
Your Straightforward BCM Installation Guide
Installing your pre-programmed BCM is a manageable job for a confident DIYer or any professional technician. While the exact location varies by model (see fitment list), the process is generally similar.
- 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 most Savana/Express vans, the BCM is located in the center dash area. On other models like the Acadia or Impala, it’s typically on the left-hand side of the dash, near the steering column.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Use a trim removal tool to avoid breaking clips.
- Unplug and Unbolt: Disconnect all electrical connectors from the old BCM. They have locking tabs that need to be depressed. Then, remove the bolts or screws holding the module in place.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and secure it. Reconnect all electrical connectors, ensuring they click firmly into place.
- Reconnect and Test: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, locks, windows, radio, etc., before starting the engine.
Important Post-Installation Note: Some vehicles may require additional relearn procedures after installation, such as for the airbag system or brake pedal position sensor. A professional scan tool is typically required for these steps. Please see our FAQ for more details.
Verified Vehicle Compatibility List
This module is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers. Please verify your vehicle is on this list. This unit replaces 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.
AVALANCHE 1500 10 (ID 25892622)
CAPRICE 11-13
CAPTIVA SPORT 12 (ID 20921435, 20921436, 22860591)
CTS 08 (RH dash)
CTS 08-13 (LH dash)
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE 10 (ID 20815898 or 25892622)
ESCALADE ESV 10 (ID 20815898 or 25892622)
ESCALADE EXT 10 (ID 25892622)
EXPRESS 1500 VAN 08-12
EXPRESS 2500 VAN 08-09
EXPRESS 2500 VAN 10-12
EXPRESS 3500 VAN 08-09
EXPRESS 3500 VAN 10-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-12
IMPALA 13 (ID 22820315)
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA 1500 VAN 08-12
SAVANA 2500 VAN 08-12
SAVANA 3500 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10 (ID 20815898 or 25892622)
TAHOE 10 (ID 20815898 or 25892622)
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON 10 (ID 20815898 or 25892622)
YUKON XL 1500 10 (ID 20815898 or 25892622)