Are you battling strange and frustrating electrical problems in your GM truck or van? A failing Body Control Module (BCM) is often the culprit behind issues like malfunctioning lights, erratic power windows and locks, or a security system that acts up for no reason. This replacement GM Body Control Module is the reliable, straightforward solution to restore your vehicle’s electronic functions to factory-perfect condition.
The BCM acts as the central command center for your vehicle’s body electronics. When it begins to fail, it can send incorrect signals, or no signals at all, leading to a host of intermittent and hard-to-diagnose problems. Instead of spending a fortune on diagnostic time at a dealership, you can solve the problem at its source. This module is a direct replacement for part number 15198115 and several other interchangeable part numbers.
From the Diagnostic Bay
We once had a 2006 Silverado 2500 in the shop with a classic BCM failure symptom: the radio would randomly turn off, the interior dome light would flicker while driving, and the driver’s side power window would only work occasionally. The owner had already replaced the window switch and checked the fuses. After confirming power and ground at the BCM connector, we identified the module itself as the faulty component. Installing a VIN-programmed BCM like this one resolved all the electrical gremlins in a single repair.
Common Symptoms of a Failing BCM
- ✔ Power windows, mirrors, or door locks operating intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system or keyless entry failing to work correctly.
- ✔ Unexplained battery drain that leaves you with a dead battery.
- ✔ Warning lights like the airbag or ABS light illuminating on the dash.
- ✔ The radio or instrument cluster randomly shutting off or resetting.
Why Choose Our Programmed GM Body Control Module?
Getting your truck or van back to normal shouldn’t be complicated. Our service is designed to be as simple as possible. We take a high-quality replacement BCM and flash it with the latest official GM software, specifically calibrated to your vehicle’s unique Vehicle Identification Number (VIN). This means the module arrives at your door ready for installation, with no need for an expensive trip to the dealer for programming. This plug-and-play approach saves you time, money, and hassle.
Post-Installation Requirements
While this module is programmed for your VIN, some vehicle systems may require a relearn procedure after installation. These can typically be performed with a capable bi-directional scan tool.
- Airbag System Sync: If your airbag warning light is on after installation, a technician will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light and traction control operation.
Please note: Specific procedures can vary. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
What does a GM Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, security system, and instrument panel warnings.
Why do you need my VIN?
Your vehicle’s VIN allows us to program the BCM with the exact software and settings for your specific model, year, and options. This ensures compatibility and proper function without requiring dealer programming.
Is this part difficult to install?
For most listed trucks, the BCM is located under the steering column, and for vans, it’s in the center dash. Installation typically involves disconnecting the battery, removing a few trim panels, and swapping the module. It’s a manageable job for a DIYer with basic tools.
Do I need to send my old part back?
No. This purchase has no core charge, so you can keep your original module.
What if my airbag light is on after I install the BCM?
This is a known possibility. The new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.