Restore Your Vehicle’s Electrical Stability
Are you battling bizarre electrical issues in your GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or a car that refuses to start for no apparent reason? These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it falters, it can create a cascade of frustrating and unpredictable problems. This replacement GM Body Control Module is the definitive, reliable solution to get your car, truck, or SUV back to normal.
Case Study: A Tricky Diagnosis
I remember a 2009 Chevy Impala that came into the shop with a complaint that would drive any owner crazy. The radio would randomly turn off, the dash lights would flicker while driving, and occasionally, the anti-theft system would engage, leaving the owner stranded. The battery and alternator tested fine. After hooking up the scan tool, I saw a slew of U-codes, specifically a U0140 – Lost Communication With Body Control Module. This pointed directly to an internal BCM failure. Instead of a costly trip to the dealer for a new module and programming, we installed one of these VIN-programmed units. The electrical gremlins vanished, and the car was back on the road the same afternoon. This is the simple, effective fix you need.
Is Your GM Vehicle Showing These BCM Failure Signs?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, it’s highly likely your BCM is the culprit. Over my 20 years as a technician, these are the symptoms I’ve seen time and time again.
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The vehicle’s security system engaging randomly, causing a no-start condition.
- ✔ The horn honking unexpectedly or the panic alarm going off.
- ✔ Communication error codes stored in the system, such as U0140, U0155, or other B-series codes.
- ✔ The air conditioning or climate control system behaving erratically.
- ✔ False warnings on the driver information center (DIC).
Your Straightforward BCM Installation Guide
We make this repair as simple as possible. Because we pre-program the GM Body Control Module to your vehicle’s VIN, you can skip the expensive trip to the dealership. While the exact location varies by model (check your service manual), the general process is straightforward for a DIYer with basic tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes before beginning work. This prevents electrical shorts and allows modules to power down.
- Locate the BCM: On most of these GM models, the BCM is located under the driver’s side or center of the dashboard. You may need to remove a lower dash panel or glove box 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 or unclip the old 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. You’ll hear a ‘click’ when they are properly seated.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position (without starting the engine) and test all body functions: lights, locks, windows, radio, etc.
What to Expect After Installation
In most cases, the installation is complete after step 5. However, on certain models, a couple of additional steps, known as ‘relearn’ procedures, may be necessary. These can often be performed with a high-end bidirectional scan tool.
- Airbag System Sync: If your airbag/SRS warning light is illuminated after installation, a procedure called “Setup SDM Primary Key in BCM” is required to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some vehicles may require a recalibration of the brake pedal position sensor to ensure correct brake light operation and to prevent issues with the traction control system.
- Keep Your Old Part: There is absolutely no core charge. You are free to keep your original module.
Verified Fitment for a Wide Range of GM Models
This module is a direct replacement for a vast number of GM vehicles and supersedes multiple part numbers, ensuring you get the right component with the latest software. It is compatible with the following 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.
Please verify your vehicle from the list below:
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
CAPRICE 11-13 Body Control (BCM)
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435, 20921436, or 22860591
CTS 08-13 Body Control (BCM); LH dash or RH dash
DTS 06-11 Body Control (BCM); (RH center dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EQUINOX 07-09 Body Control (BCM); (center dash)
ESCALADE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 08-12 Body Control (BCM)
EXPRESS 3500 VAN 08-12 Body Control (BCM)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-13 Body Control (BCM); (LH dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SAVANA 1500 VAN 08-12 Body Control (BCM); (center dash)
SAVANA 2500 VAN 08-12 Body Control (BCM)
SAVANA 3500 VAN 08-12 Body Control (BCM)
SRX 07-09 Body Control (BCM); LH dash
STS 10 Body Control (BCM); center dash
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TORRENT 07-09 Body Control (BCM); (center dash)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
VUE 08-10 Body Control (BCM); (center dash)
YUKON 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
Frequently Asked Questions
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean for me?
It means we load the latest GM-approved software onto the module specifically for your vehicle’s VIN before we ship it. This ensures it communicates correctly with your car’s other systems, just like a new one from the dealer, but without the dealer’s programming fees.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module, which is helpful if you ever want to double-check the original part number.
Is this a difficult part to install for a DIYer?
For most people with basic hand tools (like a socket set and trim removal tools), this is a very manageable job. The main challenge is typically accessing the module under the dash. The pre-programming saves you the most complex step.
Will this fix my ‘Service Stabilitrak’ or ‘Traction Control’ light?
It can. The BCM communicates with the traction control system. If the BCM is faulty, it can cause these warnings. A Brake Pedal Position Relearn may be required after installation to clear these specific lights.
What happens if my airbag light is on after I install it?
This is an uncommon but possible scenario. It means the new BCM needs to be electronically ‘introduced’ to the airbag control module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot program and ship your module without it, so please provide it promptly to avoid delays.