Restore Full Control Over Your Vehicle’s Electronics
Are you battling frustrating electrical gremlins in your GM truck or van? Intermittent power windows, locks that have a mind of their own, a security light that won’t turn off, or a mysterious battery drain can all point to one culprit: a failing Body Control Module (BCM). As the central computer for your vehicle’s comfort and convenience features, a faulty BCM can make your daily drive a nightmare. In my 20+ years of diagnostics, I’ve seen these modules cause some of the most confusing symptoms, leaving owners and even some technicians scratching their heads.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the biggest headache out of the repair process. Simply provide us with your vehicle’s VIN at checkout, and our technicians will program this BCM with the latest GM software specific to your truck or van. This means no expensive trips to the dealership for programming, no special scan tools required. You get a direct-fit, plug-in solution that restores the functionality you’ve been missing. This is the most efficient way to get a reliable fix for your Programmed GM BCM needs.
Real-World Repair Story: The Phantom Battery Drain
A customer brought in his 2006 Silverado 2500, completely frustrated. Every few days, his battery would be dead. He’d already replaced the battery and the alternator, but the problem persisted. After connecting a multimeter to test for parasitic draw, we saw a significant amperage pull even with the key off. By pulling fuses one by one, we isolated the draw to the BCM circuit. The internal circuits of the old BCM were failing, preventing it from going into ‘sleep’ mode and continuously draining the battery. Installing a new, VIN-programmed BCM like this one solved the problem instantly. The truck went to sleep properly, and the battery drain was gone. It’s a classic failure I’ve seen dozens of times on these workhorse trucks.
Is Your GM Truck or Van Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors work intermittently or not at all.
- ✔ Interior dome lights or dashboard lights flicker or stay on.
- ✔ The anti-theft or security light is illuminated, causing a no-start condition.
- ✔ Windshield wipers behave erratically (won’t turn off, wrong speed).
- ✔ The horn honks unexpectedly or doesn’t work.
- ✔ You’re experiencing a parasitic battery drain that kills your battery overnight.
- ✔ Multiple unrelated warning lights are on the dash.
Your Straightforward BCM Installation Guide
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes before starting work.
- Locate the BCM: On Silverado and Sierra pickups, the BCM is typically located under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it’s usually found behind the center dash panel.
- Remove Connectors: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be pressed to release. Do not force them.
- Swap the Module: Unbolt or unclip the old BCM from its mounting bracket and remove it. Install your new, pre-programmed BCM in its place.
- Reconnect Everything: Plug all electrical connectors firmly into the new module. You should hear a ‘click’ as they lock into place. Reconnect the negative battery terminal.
- Post-Installation Procedures (CRITICAL): After installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a capable diagnostic scan tool to ensure the airbag system communicates correctly and to clear the airbag light. Some vehicles may also require a Brake Pedal Position Sensor recalibration. If you are not equipped to perform these steps, a professional technician’s assistance is required.
Verified Fitment for Your GM Vehicle
This module is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. It is guaranteed to fit the following models with the specified options:
CHEVROLET/GMC EXPRESS/SAVANA VANS (2003-2007) – Check specific options like ‘w/o commercial tradesman package’.
CHEVROLET/GMC SILVERADO/SIERRA 1500, 2500, 3500 (2003-2007) – Includes ‘Classic’ models for 2007. Fitment varies based on cab type (exc. Crew Cab) and transmission options. Please verify your vehicle in the detailed fitment list or contact us with your VIN.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, absolutely. Providing your VIN is essential. We use it to load the correct, vehicle-specific software and calibrations from GM onto your new BCM. This step ensures all your vehicle’s options will work correctly and is what makes this a true plug-and-play solution.
What happens if I don’t do the airbag and brake procedures?
If you skip the ‘Setup SDM Primary Key’ procedure, the airbag warning light will remain on, and the supplemental restraint system may not function correctly in an accident. The brake pedal recalibration ensures the brake lights and stability control systems (if equipped) receive accurate data. These are critical safety steps.
Is this a difficult part for a DIYer to replace?
The physical replacement is straightforward for someone with basic mechanical skills. It involves removing a few dash panels and unplugging connectors. The most important part is understanding that the post-installation electronic procedures are required and must be done with a proper scan tool.
Will this fix my ‘Service 4WD’ message?
While the BCM communicates with many modules, a ‘Service 4WD’ message is more commonly related to the Transfer Case Control Module (TCCM), the encoder motor, or the dash switch. A full diagnostic scan is recommended to pinpoint the exact cause.
My original part number isn’t 15194169, but it’s on the interchange list. Will it work?
Yes. Manufacturers often consolidate or supersede part numbers over time. If your original BCM’s part number is on our interchange list (e.g., 15167329, 15136224, etc.), this module is the correct, updated replacement for your vehicle.