Is Your Chevrolet Impala Experiencing Strange Electrical Problems?
The Body Control Module (BCM) is the central command center for your vehicle’s body electronics. It manages everything from your power windows and door locks to the interior lights, security system, and even aspects of the instrument cluster. When the BCM starts to fail, it can create a cascade of confusing and frustrating issues that can be difficult to diagnose. If your Impala is acting possessed, with lights flashing randomly or accessories working intermittently, a faulty BCM is a very likely culprit.
Replacing a BCM isn’t just about swapping the part; it requires specific programming to your vehicle’s unique Vehicle Identification Number (VIN) to ensure all systems communicate correctly. This module is the perfect solution, arriving at your door pre-programmed with the latest GM software updates for your specific vehicle. This saves you a trip to the dealership and avoids the high costs associated with their programming services, getting you back on the road faster and with less hassle.
From the Diagnostic Bay
We had a 2011 Impala come into the shop that was giving the owner fits. The dash lights would flicker, the radio would cut out, and sometimes the car wouldn’t start, showing a ‘Service Theft System’ message. The battery and alternator tested fine, and there were no obvious wiring issues. After hooking up our professional scan tool, we saw a dozen communication error codes all pointing back to one component: the BCM. After replacing it with a pre-programmed unit like this one, every single one of the ghost-like electrical problems vanished. The BCM was failing internally, causing a data storm on the vehicle’s network. This is a classic failure pattern for this platform.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on, not turning on, or flickering randomly.
- ✔ The vehicle’s security system acting up, preventing the car from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Wipers activating on their own or not responding to the switch.
- ✔ False warning lights appearing on the instrument cluster (e.g., check engine, ABS, airbag).
- ✔ Rapid battery drain while the vehicle is parked.
Installing Your 2006-2013 Impala Body Control Module
This module is a direct-fit replacement, making the physical installation straightforward for a DIYer with basic tools or any professional technician. On the 2006-2013 Impala, the BCM is typically located on the left-hand (driver’s) side of the dashboard. Because this unit is delivered pre-programmed to your VIN, the most complex part of the job is already done. However, depending on your vehicle’s specific configuration, some post-installation procedures may be necessary.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure proper operation of the brake lights and stability control systems.
This part is a guaranteed fit for a wide range of GM vehicles and interchanges with numerous part numbers, including 10382479, 15872388, 20935349, 22860591, and many more. Please verify your part number or consult the detailed fitment list to ensure compatibility.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that controls and monitors most of the non-engine related electronic functions in your vehicle. This includes power windows, locks, lights, wipers, security system, and more. It acts as a central hub for these systems.
Do I need to program this module?
No. This is the primary benefit of our service. We program the module to your vehicle’s VIN before we ship it. This makes the installation process much simpler and saves you from needing specialized dealer tools.
What information do you need from me?
After you place your order, you must provide us with your 17-digit Vehicle Identification Number (VIN). We use this to load the correct software and settings for your car’s specific options and features.
Is this module difficult to install?
The physical replacement is generally not difficult for someone with mechanical experience. It involves removing a few dash panels to access the module and unplugging electrical connectors. The most critical step, programming, is already done for you. However, some vehicles may require the additional sync or relearn procedures mentioned above.
What happens if my airbag light comes on after installation?
This is a known possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A professional mechanic with a high-end diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Will this fix my specific electrical problem?
If your vehicle is exhibiting multiple symptoms from the list above, a failing BCM is the most probable cause. This part is designed to correct those issues. However, we always recommend proper diagnosis to confirm the BCM is the root cause before ordering.