Is Your GM Truck or Van Acting Possessed?
Are you dealing with a frustrating mystery of electrical problems? Flickering interior lights, power windows with a mind of their own, a security light that won’t turn off, or even a vehicle that refuses to start? Before you start chasing wires for days, the problem is very likely a failing Body Control Module (BCM). In my 20+ years as a technician, I’ve seen these exact symptoms hundreds of times, and the BCM is the central culprit. It’s the electronic brain for your vehicle’s body functions, and when it goes, chaos ensues.
The Simple, Dealer-Free Solution
Forget about expensive diagnostic fees and the hassle of getting your vehicle towed to a dealership for programming. We provide a direct, reliable solution. This is a tested Body Control Module, part number 15747545, that comes fully programmed to your vehicle’s specific VIN. We load the latest software from GM, ensuring all functions work as they should, right out of the box. You get a fully functional part without the dealership price tag or wait time.
Expert Pro Tip: A Common Misdiagnosis
A frequent mistake I see in the shop is mechanics replacing the ignition switch when the real issue is a failing BCM. A bad BCM can disrupt the Passlock/Passkey security signal, mimicking a faulty ignition switch and causing a no-start condition. If you’re experiencing intermittent starting problems along with other odd electrical issues, the BCM should be your primary suspect. This simple check can save you hundreds in unnecessary parts and labor.
Why Choose Our Programmed GM BCM Replacement?
This isn’t just a part; it’s a complete solution designed to get you back on the road with confidence. Here’s what sets our service apart:
- ✔ VIN-Programmed for You: Simply provide your VIN during checkout, and we handle the complex programming. The module arrives ready for installation.
- ✔ Restores Full Functionality: Fixes common issues like erratic power locks, windows, lighting, and security system faults.
- ✔ Latest GM Software: We flash the unit with the most current and stable software available, often correcting factory bugs.
- ✔ Direct-Fit Guarantee: This module is a direct replacement for multiple part numbers, including 15167329, 15194169, 15136224, and more.
- ✔ No Dealer Visit Required: Save time and money by avoiding the dealership’s programming service.
Plug-and-Play Installation & Post-Install Procedures
Installing your new BCM is straightforward. While the exact location varies between trucks (under the steering column) and vans (center dash), the process is similar. After installation, a couple of quick procedures are necessary to ensure all systems are synchronized.
- Safety First: Disconnect the negative battery terminal and wait a few minutes for the system to discharge.
- Locate and Remove: Find the old BCM. Carefully disconnect the wiring harnesses and remove the mounting bolts or clips.
- Install New BCM: Mount the new module and securely reconnect all wiring harnesses. They are color-coded and keyed to prevent mistakes.
- Reconnect Battery: Re-attach the negative battery terminal.
- Airbag System Reset: (Required) The airbag warning light will be on. You must perform the ‘Setup SDM Primary Key in BCM’ procedure using a bi-directional scan tool. Most professional repair shops can perform this service quickly.
- Brake Pedal Calibration: (If Needed) Some vehicles may require a brake pedal position sensor recalibration. If you notice any change in brake light operation or cruise control function, this procedure should be performed with a diagnostic tool.
By ordering this pre-programmed GM BCM Replacement, you are choosing the most efficient and reliable path to resolving your vehicle’s electrical headaches. Match your part number or vehicle in the fitment list and let us handle the rest.