Restore Your Vehicle’s Electrical Hub and End Frustrating Glitches
Is your GM vehicle acting possessed? Flickering lights, malfunctioning power windows, a security system that randomly immobilizes the engine, or a dashboard lit up with warning lights are all classic signs of a failing Body Control Module (BCM). As an automotive technician with over 20 years of experience, I can tell you that the BCM is the central nervous system for your vehicle’s comfort and convenience features. When it fails, it can cause a cascade of bizarre, seemingly unrelated problems that are frustrating to diagnose and expensive to fix at a dealership.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle and high cost out of the equation by programming this GM Body Control Module directly to your vehicle’s VIN before it ships. This means it arrives at your door loaded with the latest factory software from GM, ensuring seamless communication with your vehicle’s other electronic systems. You get a reliable, plug-and-play fix without the need for expensive dealer-only programming tools.
A Technician’s Notebook: The Case of the Haunted Express Van
I remember a 2011 Express work van that came into my shop with a laundry list of complaints from the owner. The dome lights would stay on, the radio presets would wipe overnight, and the battery was dead every other morning. The owner had already replaced the battery twice. A scan showed a dozen communication codes (U-codes) pointing in every direction. This is a classic BCM failure scenario. The internal circuitry fails, creating parasitic draws and disrupting the data network. We installed a VIN-programmed BCM just like this one. The installation took less than 30 minutes, and every single electrical gremlin was gone. The owner saved hundreds compared to the dealer quote and got his reliable workhorse back on the road the same day.
Is Your Vehicle Showing These Symptoms?
- ✔ Erratic or non-working power windows, door locks, or interior lights.
- ✔ The security or anti-theft light is on, and the vehicle won’t start.
- ✔ Horn honks unexpectedly or doesn’t work at all.
- ✔ Dashboard warning lights appear for no reason.
- ✔ Communication error codes, often starting with ‘U’ (e.g., U0140, U0155).
- ✔ Rapid battery drain when the vehicle is parked.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the systems to fully power down.
- ✔ Locate the BCM: On most compatible vehicles, the BCM is located under the driver’s side of the dashboard, often near the steering column or behind a kick panel. On vans like the Express/Savana, it’s typically behind the center dash panel.
- ✔ Unplug and Remove: Carefully disconnect the electrical connectors. They have locking tabs that must be depressed to release. Once unplugged, remove any bolts or clips holding the old module in place.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- ✔ 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.
Important Post-Installation Information
While this module is programmed for a plug-and-play installation, some vehicles may require additional steps for full system integration. Please be aware of the following:
- Airbag System (SRS): 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: On certain models, a “Brake Pedal Position Sensor Relearn” may be necessary to ensure correct brake light operation and to clear any traction control warnings.
- No Core Charge: You are not required to return your old BCM. This saves you the time and expense of a core return.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or consult with a qualified mechanic if you are unsure about any step.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM cars, trucks, and SUVs, and is compatible with 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, and 95151084.
Fits the following models (and more):
- Buick: Enclave (08-12), Lucerne (06-11)
- Cadillac: CTS (08-13), DTS (06-11), Escalade/ESV/EXT (10), SRX (07-09), STS (10)
- Chevrolet: Avalanche 1500 (10), Caprice (11-13), Captiva Sport (12), Equinox (07-09), Express Van 1500/2500/3500 (08-12), Impala (06-13), Monte Carlo (06-07), Suburban 1500 (10), Tahoe (10), Traverse (09-12)
- GMC: Acadia (07-12), Savana Van 1500/2500/3500 (08-12), Yukon / Yukon XL 1500 (10)
- Hummer: H2 (08-09)
- Pontiac: G8 (08-09), Torrent (07-09)
- Saturn: Outlook (07-10), Vue (08-10)
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means we load your vehicle’s specific identification number (VIN) and all related factory software onto the GM Body Control Module before we ship it. This ensures it works correctly with your exact options and security system, eliminating the need for a trip to the dealer for expensive programming.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module, which saves you the hassle and cost of return shipping.
Will this fix my ‘Service Theft System’ light?
In many cases, yes. The BCM is a critical part of the GM Passlock/Passkey anti-theft system. A faulty BCM is a very common cause of security system warnings and no-start conditions. Our VIN programming correctly syncs the security data to your vehicle.
Can I install this myself if I’m a DIYer?
Absolutely. The physical replacement is straightforward for most people with basic tools. Because it arrives pre-programmed, you skip the most difficult electronic part of the job. Just follow our installation guide and be aware of the potential need for a post-install relearn procedure.
What happens if my airbag light comes on after installation?
This is an expected possibility on some models. It means the new BCM needs to be electronically introduced to the airbag’s Supplemental Restraint System (SRS) module. A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.