Tired of Chasing Electrical Gremlins in Your GM Truck or Van?
As a technician with over 20 years on the shop floor, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable vehicle into a source of constant frustration. You’re dealing with bizarre, intermittent issues that seem to have no rhyme or reason. One day the power locks work, the next they don’t. The dome light flickers for no reason, or worse, the truck won’t start at all. You’re not imagining things—you’re likely dealing with a faulty GM Body Control Module, the electronic nerve center for your vehicle’s comfort and convenience features.
Stop throwing parts at the problem. This replacement BCM is the definitive solution, arriving at your door pre-programmed with the latest GM software specifically for your vehicle’s VIN. This eliminates the most expensive and time-consuming part of the repair: a trip to the dealership for programming. We handle the complex part so you can get back to what matters—a vehicle that works as it should.
A Technician’s Notebook
A customer brought in his 2006 Silverado 2500 last month with a laundry list of strange symptoms. The radio would turn off randomly, the security light was on, and his power windows had a mind of their own. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I saw several communication error codes pointing toward the BCM. These modules, especially on work trucks that see a lot of vibration and temperature swings, can develop internal solder joint failures. We installed a VIN-programmed GM Body Control Module, and it was like flipping a switch. All the phantom electrical issues vanished instantly. It’s a common failure, and a pre-programmed unit like this saves hours of diagnostic and programming time.
Is Your Vehicle Showing These Signs of BCM Failure?
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting (dome lights, headlights).
- ✔ The security system light stays on, or the alarm goes off randomly.
- ✔ Instrument cluster gauges behaving strangely or not working at all.
- ✔ A no-start condition where the engine cranks but won’t fire, often related to the anti-theft system.
- ✔ Communication error codes (U-codes) stored in the system.
A Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for a confident DIYer. The location varies between trucks (under the steering column) and vans (center dash). Always confirm the location for your specific model.
- 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: On Silverado/Sierra pickups, it’s typically located under the driver’s side of the dashboard, near the steering column. On Express/Savana vans, it’s often behind the center dash trim. You may need to remove a few plastic trim panels for access.
- Disconnect and Remove: Carefully unplug the electrical connectors. 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 GM Body Control Module in place. Securely plug in all electrical connectors, ensuring they click into place.
- Post-Installation Procedures: Reconnect the battery terminal. You will now need to perform a couple of crucial relearn procedures.
Important Final Steps: Do Not Skip!
After your new BCM is installed, a few final steps are required to ensure everything communicates correctly. Failure to do so can result in warning lights or improper system function.
- Airbag System Reset: The airbag warning light will likely be on. You must perform the ‘Setup SDM Primary Key in BCM’ procedure using a compatible bi-directional scan tool. This re-establishes communication between the new BCM and the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Sensor Relearn: Some vehicles require a brake pedal position sensor recalibration after BCM replacement. This ensures the brake lights and stability control systems function correctly. This is also performed with a professional-grade scan tool.
Note: If you are not equipped with a diagnostic tool capable of these functions, a local repair shop can typically perform these relearn procedures for you.
Will This Fit My Truck or Van?
This module is a direct replacement for a wide range of GM vehicles and supersedes multiple part numbers, including 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please verify your vehicle is on the list below:
- 2003: Body Control (BCM); (center dash)
- 2004-2007: Body Control (BCM); (center dash), w/o commercial tradesman package
Chevrolet Silverado / GMC Sierra Pickups (1500, 2500, 3500)
- 2003-2006: Body Control (BCM); (under steering column), exc. Crew Cab
- 2007 Classic Style (creased door skin): Body Control (BCM); (under steering column), exc. Crew Cab
Chevrolet SSR
- 2003-2006: Body Control (BCM)
Note: Specific transmission options (MT/AT) apply for some 2006-2007 HD models. Please match the description in the original listing if you have a 2500/3500 from those years.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We will program the module with the latest GM software matched to your vehicle before shipping.
Is this a simple plug-and-play installation?
The physical installation is plug-and-play. However, as with any BCM replacement, post-installation procedures like an airbag system reset and potentially a brake pedal relearn are required using a professional scan tool to ensure full functionality and clear any warning lights.
Will this fix my ‘Service 4WD’ light?
While the BCM communicates with many systems, the ‘Service 4WD’ light is typically related to the Transfer Case Control Module (TCCM) or components like the encoder motor or dash switch. A BCM is not the usual cause for that specific warning.
Do I need to return my old BCM?
No core charge is required for this part. You can keep or responsibly dispose of your old module.
What happens if I don’t do the relearn procedures?
You will likely have a persistent airbag warning light on your dash, which is an automatic safety inspection failure in many states. Other systems may also not function as intended. We highly recommend completing all post-installation steps.