Is Your GM Truck or Van Plagued by Electrical Gremlins?
If you’re dealing with flickering lights, malfunctioning power windows and locks, a security system that acts up, or even a no-start condition, a failing Body Control Module (BCM) is often the culprit. The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a wide range of frustrating and seemingly unrelated issues. This replacement BCM, part number 15747545, is the direct-fit solution to restore full functionality to your vehicle.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, mirrors, or door locks not working correctly.
- ✔ The security system or keyless entry failing to operate.
- ✔ The radio or instrument cluster display acting erratically.
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ The engine cranks but refuses to start due to security system communication failure.
Plug-and-Play Solution for Your 2003-2007 Sierra BCM
Don’t waste time and money at the dealership. We make the replacement process simple. This BCM is professionally programmed to your vehicle’s specific VIN before it ships, ensuring it integrates seamlessly with your truck’s existing systems. It arrives loaded with the latest software updates from GM, providing a reliable and lasting repair. Simply provide your VIN after purchase, and we’ll handle the complex programming for you.
This module is a direct replacement for a wide range of GM trucks and vans, and is interchangeable with the following part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please verify your part number and check the fitment list to ensure compatibility.
Important Post-Installation Information
While this BCM is delivered ready for installation, some vehicles may require additional steps to sync all systems perfectly. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed by a professional with a capable diagnostic tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light and traction control operation.
Disclaimer: Specific procedures can vary. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
What does a Body Control Module (BCM) 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 displays.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information.
Is this part difficult to install?
For most compatible trucks and vans, the BCM is located under the steering column or in the center dash area. It is typically held in by a few bolts or clips and has several electrical connectors. Installation is a straightforward process for someone with basic mechanical skills.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
What if my airbag light is on after installing the BCM?
This can happen on some vehicles. It means the new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A repair shop with a high-level scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.