Are you chasing down electrical gremlins in your GM vehicle? Intermittent power windows, flickering dash lights, a security system that won’t cooperate, 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, a faulty BCM can create a host of confusing and unpredictable problems. This isn’t just an inconvenience; it can affect your vehicle’s daily reliability and safety.
This is a direct-fit replacement GM Body Control Module, solving these common issues without the exorbitant cost and hassle of a dealership visit. We take the guesswork and complexity out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the module with the latest GM software specific to your car, truck, or van. It arrives at your door ready for a straightforward installation, saving you time and money.
From the Diagnostic Bay
I remember a 2008 Chevy Impala that came into the shop with a laundry list of bizarre symptoms. The owner said the radio would turn on and off by itself, the driver’s side power lock was dead, and occasionally, the car wouldn’t start, flashing the security light. He’d already replaced the battery and checked fuses. After hooking up the scan tool, I saw a slew of U-codes, specifically U0140 (Lost Communication With Body Control Module). This pointed me directly to the BCM. Instead of a simple communication fault, the BCM’s internal processor was failing, causing it to randomly drop offline and disrupt the entire network. Swapping in a VIN-programmed BCM like this one resolved all issues instantly. It’s a classic failure mode I’ve seen on hundreds of these GM platforms.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Power windows, locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security or anti-theft light is illuminated, preventing the engine from starting.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Remote keyless entry (key fob) has stopped working.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or B1001.
- ✔ Unexplained battery drain that kills the battery overnight.
A Straightforward Guide to Your BCM Swap
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait about 10 minutes to allow all systems to power down completely.
- ✔ Locate the BCM: The location varies by model. Common spots are under the driver’s side dash (near the steering column), behind the glove box, or in the center console area. Your fitment details above provide a good starting point.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors. Most have a locking tab that needs to be pressed or lifted. Once disconnected, unbolt or unclip the old BCM and remove it from the vehicle.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same position as the old one. Secure it with the original hardware.
- ✔ Reconnect Everything: Firmly plug in all electrical connectors until they click into place. Reconnect the negative battery terminal.
- ✔ Perform Final Checks: Start the vehicle and test all body functions—lights, windows, locks, radio, and wipers—to ensure proper operation. Refer to the post-installation procedures below if needed.
Post-Installation Procedures
While this module is programmed for your VIN, some vehicle systems may require a ‘handshake’ after installation. This is normal.
- Airbag System Sync: If your airbag warning light is on 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.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure proper brake light and traction control operation.
Disclaimer: We are committed to providing a reliable part that simplifies your repair. However, specific vehicle requirements can vary. Always consult a factory service manual or a certified technician if you are unsure about any step.
Verified Fitment For These GM Models
This GM Body Control Module is a direct replacement for a wide array of vehicles and part numbers. Please verify your model and original part number from the list below. This module replaces 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.
Fits: ACADIA 07-12, AVALANCHE 1500 10, CAPRICE 11-13, CAPTIVA SPORT 12, CTS 08-13, DTS 06-11, ENCLAVE 08-12, EQUINOX 07-09, ESCALADE 10, ESCALADE ESV 10, ESCALADE EXT 10, EXPRESS VANS 08-12, G8 08-09, HUMMER H2 08-09, IMPALA 06-13, LUCERNE 06-11, MONTE CARLO 06-07, OUTLOOK 07-10, SAVANA VANS 08-12, SRX 07-09, STS 10, SUBURBAN 1500 10, TAHOE 10, TORRENT 07-09, TRAVERSE 09-12, VUE 08-10, YUKON 10, YUKON XL 1500 10. (Please check the detailed fitment data for specific options and IDs).
Frequently Asked Questions about the GM BCM
Do I really need to provide my VIN?
Do I really need to provide my VIN?
Yes, absolutely. Providing your 17-digit VIN is critical. We use it to load the precise software and vehicle-specific options (like keyless entry, lighting package, etc.) into the BCM. This ensures it communicates correctly with all other modules in your vehicle.
Is this a plug-and-play installation?
For most functions, yes. Because we program it to your VIN, it eliminates the need for dealer-level programming for core operations. However, as noted above, certain security or safety systems like the airbag (SRS) may require a simple relearn procedure with a capable scan tool.
Do I have to return my old BCM?
No. There is no core charge for this part. You can keep your original module, which can be helpful for double-checking part numbers or for your own records.
What if the airbag light comes on after I install it?
This is a known possibility. It simply means the new BCM needs to be formally introduced to the vehicle’s Sensing and Diagnostic Module (SDM). A repair shop with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to clear the light.
Will this fix my specific electrical problem?
This GM Body Control Module is a direct solution for failures within the BCM itself. If your vehicle’s symptoms and diagnostic codes point to a faulty BCM, this part is the correct fix. It will not fix issues caused by bad wiring, faulty switches, or other failing components.