Is Your GM Vehicle Suffering from Bizarre Electrical Issues?
The Body Control Module (BCM) is the central command center for your vehicle’s electronic accessories. It manages everything from your power windows and door locks to the interior lights, security system, and instrument cluster. When the BCM begins to fail, it can create a cascade of frustrating and seemingly unrelated problems, making diagnosis a difficult task. If you’re experiencing strange electrical gremlins, a faulty BCM is a likely culprit.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not turning on).
- ✔ Instrument cluster gauges behaving erratically or warning lights appearing for no reason.
- ✔ Vehicle security system faults or key fobs not working correctly.
- ✔ A persistent parasitic battery drain that kills your battery overnight.
- ✔ Radio or climate control systems turning on or off by themselves.
- ✔ No-start conditions where the engine cranks but won’t fire up due to security system confusion.
The Direct-Fit, Programmed Solution
Don’t let a faulty BCM keep your vehicle off the road or force you into an expensive dealership visit. This replacement GM Body Control Module is the most efficient and reliable solution available. We take the guesswork out of the repair by pre-programming the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures that the module communicates perfectly with your vehicle’s other computers right out of the box.
By programming the unit with the latest software updates from GM, we can often resolve issues that were present even in the original factory software. Simply provide your VIN after purchase, and our technicians will handle the complex programming, saving you time, money, and the hassle of towing your vehicle to a dealer.
Installation and Post-Install Procedures
Physical installation is typically straightforward, as the BCM is often located under the driver’s side dashboard. However, after the new module is installed, certain vehicle-specific relearn procedures may be necessary to ensure all systems function correctly. These procedures require a professional-grade diagnostic scan tool.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed. This syncs the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: On some models, a recalibration of the brake pedal position sensor may be required to ensure proper operation of the brake lights and stability control systems.
Please note: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors a wide range of electronic body functions not related to the engine, such as lights, windows, locks, wipers, and the security system.
Is this part truly plug-and-play?
Because we program it to your VIN, it is as close to plug-and-play as possible. It eliminates the need for dealership programming. However, as noted, some vehicles may require additional relearn procedures (like for the airbag or brake sensor) with a scan tool after installation.
What information do I need to provide after ordering?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. This is crucial for us to program the module correctly for your specific car, truck, or SUV.
What happens if my airbag light comes on after I install this?
This is a known possibility. It means the new BCM needs to be electronically introduced to the airbag module. A qualified technician with a high-level scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve it.
Will this BCM fit my vehicle?
This module fits a wide range of 2013-2019 GM vehicles, including models like the Impala, Traverse, Acadia, CTS, Savana, and Express. It directly replaces part numbers 22820314 and 22915542. Please review the detailed fitment list on this page to confirm compatibility.
Do I need to send my old part back?
No. There is no core charge for this part. You can keep your original module.