Are you chasing electrical gremlins in your GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or even a car that refuses to start can all point to a single, frustrating culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can turn your reliable ride into a source of daily headaches. This isn’t just an inconvenience; it can be a serious safety issue when components like lights or door locks fail unexpectedly.
Forget the expensive trip to the dealership and the days of downtime. We offer a dependable and straightforward solution. This replacement GM Body Control Module arrives at your door pre-programmed with the latest GM software, specifically matched to your vehicle’s VIN. You provide us with your VIN at checkout, and our experts handle the complex programming. This means no special tools or dealer appointments are required for software setup, saving you hundreds of dollars and significant time. It’s the direct-fit, ready-to-install answer to restore your vehicle’s electronic functions to perfect working order.
Case Study: A Tricky Diagnosis
I remember a 2010 GMC Yukon that came into my shop with a laundry list of bizarre symptoms. The owner complained of the radio turning off randomly, the interior dome lights flickering, and an intermittent no-start condition that left him stranded twice. His previous mechanic had replaced the battery and alternator, but the problems persisted. After connecting my scanner, I saw a dozen communication codes, primarily U0140 (Lost Communication With Body Control Module). This pointed directly to the BCM. Instead of a complex wiring chase, we started with the module. A new, VIN-programmed GM Body Control Module like this one solved every single issue. It’s a perfect example of how this single component can cause widespread, seemingly unrelated chaos.
Common Signs of a Failing BCM
If your vehicle is experiencing these issues, a failing BCM is the likely cause. Look out for Diagnostic Trouble Codes (DTCs) like U0140, U0155, or B1001.
- âś” Power windows, door locks, or mirrors working intermittently or not at all.
- âś” Erratic behavior from interior or exterior lights (flickering, staying on, or not turning on).
- âś” The security system or keyless entry failing to operate correctly.
- âś” A ‘Service Theft System’ or other warning lights appearing on the dashboard.
- âś” Intermittent no-start or no-crank conditions where the battery and starter are known to be good.
- âś” Communication failures with other vehicle modules.
A Straightforward Guide to Installation
Replacing your BCM is a manageable job for a confident DIYer. While the location varies (check your vehicle’s fitment details below), the general process is similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to allow all systems to power down completely.
- Locate the BCM: Depending on your model, the BCM is typically found under the driver’s side dash, behind the glove box, or in the center console area.
- Disconnect and Remove: Carefully unplug the electrical connectors. Most have a locking tab that needs 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. Securely reconnect all electrical harnesses, ensuring each plug clicks firmly into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test your electronics—windows, locks, lights, and radio—to confirm proper operation.
- Perform Relearn Procedures: As noted below, some vehicles may require a Brake Pedal Position Relearn or an Airbag System Sync with a professional scan tool if warning lights appear.
Will This Fit My Vehicle?
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 the list below. This part replaces numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, and many more.
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)
Note: Location varies (e.g., LH dash, center dash, under steering column). Some models require matching the ID number on your original module.
Frequently Asked Questions
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
Is this module difficult to install?
Installation is generally straightforward, involving disconnecting the battery, locating the module, swapping the units, and reconnecting the battery. It is a plug-and-play process from a hardware perspective, as we handle all the programming before shipping.
What information do you need to program the module?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. This allows us to flash the module with the correct software and settings for your exact vehicle configuration.
What is the ‘Airbag System Sync’ procedure?
On some models, the new BCM needs to be electronically introduced to the airbag system (SDM). If your airbag light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function to clear the light.
Will I need to perform any other procedures after installation?
Some vehicles may require a Brake Pedal Position Sensor relearn to ensure proper brake light and traction control operation. This can often be done with a high-end scan tool. Always consult a service manual for your specific vehicle’s requirements.
Is this a new or used part?
This is a high-quality, inspected, and tested replacement part, guaranteed to restore your vehicle’s functionality. It has been programmed with the latest software available from GM for your vehicle.
What if my part number isn’t 15819552 but is on the list?
This GM Body Control Module is a compatible replacement for all part numbers listed in the description. As long as your original part number is on our cross-reference list, this module will function correctly in your vehicle once programmed to your VIN.