Tired of Chasing Electrical Gremlins in Your GM Vehicle?
Is your car or truck acting possessed? One day the power windows work, the next they don’t. Maybe the security light is flashing for no reason, or you’re dealing with bizarre instrument cluster behavior and random warning lights. As a technician with over 20 years of experience, I can tell you these aren’t random quirks—they’re classic signs of a failing Body Control Module (BCM). The BCM is the central hub for your vehicle’s comfort and convenience electronics, and when it starts to fail, it can cause a cascade of frustrating, hard-to-diagnose problems.
This isn’t just an inconvenience; a faulty BCM can affect vehicle security and even leave you stranded. Stop throwing parts at the problem. This replacement GM Body Control Module is the reliable, cost-effective solution you need. We take the guesswork and high dealership costs out of the equation by pre-programming this module to your vehicle’s specific VIN before it ever leaves our facility. You get a part that’s ready for installation right out of the box, loaded with the latest GM software updates for optimal performance.
Case Study: The Frustrating Equinox
I remember a 2008 Chevy Equinox that came into my bay with a complaint of intermittent no-start and flickering interior lights. The owner had already replaced the battery and alternator. A quick scan showed a slew of communication codes, specifically a U0140 – Lost Communication With Body Control Module. Instead of a complex wiring chase, we identified the BCM as the culprit. A faulty internal processor was causing network disruptions. We swapped in a VIN-programmed BCM, and all the electrical gremlins vanished instantly. This single part restored the vehicle’s reliability and saved the customer hundreds compared to a dealership repair.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic instrument cluster behavior, with gauges dropping out or warning lights flashing.
- ✔ The security or anti-theft system light stays on, preventing the engine from starting.
- ✔ Interior or exterior lights not working correctly (e.g., dome lights stay on, headlights won’t turn off).
- ✔ Key fob not responding or working intermittently.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or B1001.
- ✔ Climate control system malfunctions.
Your Straightforward BCM Installation Guide
Replacing your GM Body Control Module is a manageable job for a confident DIYer. While the exact location varies by model (see fitment list), the general process is similar. Always have your vehicle’s service manual handy for specific details.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all modules to power down completely.
- Locate the BCM: The BCM is typically found under the driver’s or passenger’s side of the dashboard, often near the steering column or behind the glove box. Refer to our fitment list for common locations on your model.
- Remove Trim Panels: Carefully remove any plastic trim or dash panels necessary to access the module. Keep track of all screws and clips.
- Disconnect and Remove: 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.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- Post-Installation Checks: Reconnect the battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test all body functions: windows, locks, lights, wipers, and radio. If everything operates correctly, you’re ready to start the vehicle.
Important Note on Post-Install Procedures: In some vehicles, additional steps may be required. If your airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary for proper brake light and traction control operation. These requirements vary by model.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers, ensuring a perfect match. Please confirm your vehicle is on this list and that your original part number is listed below.
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 (under steering column), ID 25892622
CAPRICE 11-13
CAPTIVA SPORT 12 (center dash), ID 20921435, 20921436, or 22860591
CTS 08 (RH 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), ID 20815898 or 25892622
ESCALADE ESV 10 (under steering column), ID 20815898 or 25892622
ESCALADE EXT 10 (under steering column), ID 25892622
EXPRESS 1500 VAN 08-12 (center dash)
EXPRESS 2500 VAN 08-12 (center dash)
EXPRESS 3500 VAN 08-12 (center dash)
G8 08-09 (center dash)
HUMMER H2 08-09 (LH firewall)
IMPALA 06-12 (LH dash)
IMPALA 13 (LH dash), ID 22820315
LUCERNE 06-11 (right side dash)
MONTE CARLO 06-07 (LH steering column)
OUTLOOK 07-10 (center dash)
SAVANA 1500 VAN 08-12 (center dash)
SAVANA 2500 VAN 08-12 (center dash)
SAVANA 3500 VAN 08-12 (center dash)
SRX 07-09 (LH dash)
STS 10 (center dash)
SUBURBAN 1500 10 (under steering column), ID 20815898 or 25892622
TAHOE 10 (under steering column), ID 20815898 or 25892622
TORRENT 07-09 (center dash)
TRAVERSE 09-12 (LH dash)
VUE 08-10 (center dash)
YUKON 10 (under steering column), ID 20815898 or 25892622
YUKON XL 1500 10 (under steering column), ID 20815898 or 25892622
Frequently Asked Questions About the GM Body Control Module
Do I need to do any programming myself?
Do I need to do any programming myself?
No. This is the biggest benefit of our service. You provide us with your vehicle’s 17-digit VIN during checkout, and we handle all the programming. The module arrives at your door ready to be installed.
Is this a simple plug-and-play installation?
Yes, for the vast majority of vehicles. Because it’s pre-programmed, the physical installation is a direct swap. You simply unplug the old module and plug this one in. Some models may require a simple ‘relearn’ procedure for certain systems like the brake pedal position sensor, which can sometimes be done without special tools.
What does ‘No Core Charge’ mean?
It means you do not have to send your old, faulty BCM back to us. The price you see is the final price, with no hidden fees or deposits for a core. You can keep or dispose of your original part.
Will this fix my ‘Service Theft System’ message?
In many cases, yes. The BCM is a critical part of the GM Pass-Key and Passlock anti-theft systems. A failing BCM is a very common cause of security system faults and no-start conditions related to theft deterrent.
What if my original part number isn’t on the list?
Please contact us with your VIN before ordering. While this module covers a huge range of applications, we want to ensure 100% compatibility for your specific vehicle to guarantee a successful repair.