Restore Your GM Van or Truck’s Electrical System to Perfect Health
Are you chasing down bizarre electrical problems in your work van or truck? Intermittent power windows, door locks with a mind of their own, a security light that won’t turn off, or interior lights that stay on and drain your battery are all classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, when the BCM starts to go, it can cause a cascade of frustrating, hard-to-diagnose issues. This isn’t just an annoyance; it’s a reliability problem that can cost you time and money. This replacement BCM is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a straightforward installation.
From the Diagnostic Bay: The Case of the Haunted Work Van Fleet
I once had a local contractor bring in a 2005 Express 3500, the first of his five work vans, with a list of complaints that sounded like a poltergeist was at work. The radio would randomly shut off, the dome light would flicker, and the power locks would cycle while driving. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I found a series of communication codes (U-codes) pointing to the BCM. Over the next two months, three more of his vans came in with nearly identical, seemingly unrelated electrical issues. The common culprit every single time? The original Body Control Module. We replaced each one with a VIN-programmed unit like this, solving the problems for good and getting his fleet back to being reliable workhorses.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely this module is the root cause of your problem.
- ✔ Erratic or non-functional power windows and door locks.
- ✔ Interior dome lights or exterior lights staying on or not working at all.
- ✔ The security or anti-theft light is illuminated on the dash, possibly causing a no-start condition.
- ✔ Inconsistent operation of the radio or instrument cluster gauges.
- ✔ False warnings on the driver information center (e.g., “Door Ajar”).
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
Your Simple Path to Installation
Installing your new 2003-2007 Express 3500 BCM is a manageable job for a DIYer or professional. For Express and Savana vans, the BCM is conveniently located in the center of the dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Access the Module: On Express/Savana vans, you’ll need to remove the dash trim panels around the center console and radio to gain access to the BCM. It’s typically mounted behind this area. For pickups, it’s located under the steering column.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unbolt the module from its mounting bracket.
- Install the New BCM: Mount the new, pre-programmed BCM in place of the old one and securely reconnect all electrical connectors.
- Reconnect Power: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and verify that functions like lights, locks, and windows are working correctly.
- Perform Relearns (If Needed): As noted below, you may need a professional scan tool to perform an Airbag System Sync or a Brake Pedal Position Relearn if related warning lights appear.
Post-Installation Procedures: What to Expect
This module is programmed to your VIN to make installation as simple as possible. However, in some vehicles, a couple of additional steps may be required after the part is installed. This is normal and ensures all related vehicle systems communicate correctly.
- Airbag System Sync: If the airbag light is on after installation, a simple “Setup SDM Primary Key in BCM” procedure is needed. This syncs the new BCM with the airbag module and requires a bi-directional scan tool.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn might be necessary to ensure correct brake light and traction control operation.
- No Core Charge: You are not required to return your old BCM. There is no core charge associated with this purchase.
Verified Vehicle Compatibility
This Body Control Module is a direct replacement for part number 15167329 and other interchangeable numbers. It fits a wide range of GM trucks and vans. Please verify your vehicle is on the list below.
- Chevrolet Express / GMC Savana 1500/2500/3500 Vans (2003-2007): Located in the center dash area. (Excludes models with commercial tradesman package from 2004-2007)
- Chevrolet Silverado / GMC Sierra 1500/2500/3500 Pickups (2003-2006): Located under the steering column. (Excludes Crew Cab models)
- Chevrolet Silverado / GMC Sierra 1500/2500/3500 Pickups (2007 Classic): For classic body style with creased door skin, located under the steering column. (Excludes Crew Cab models, check transmission options)
- Chevrolet SSR (2003-2006)
This module replaces the following part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, 10367689.
Frequently Asked Questions
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 must have your VIN to program the module before we can ship it.
Is this a plug-and-play part?
Yes, for most vehicles. Because we program it to your VIN, it eliminates the need for expensive dealer programming. In some cases, minor relearn procedures for the airbag or brake systems may be needed, as described in the listing.
Do I need to return my old BCM?
No. We do not require you to send back your original part. There is no core charge for this item, which saves you the hassle and cost of a return shipment.
What tools are required for the installation?
Basic hand tools like a socket set and trim removal tools are typically all that’s needed for the physical installation. If a post-install relearn procedure is required, a professional-grade bidirectional scan tool will be necessary.
Will this fix my ‘Service Theft System’ light?
In many cases, yes. The BCM is a critical part of the Passlock anti-theft system on these GM vehicles. A faulty BCM is a very common reason for the security light to illuminate and cause starting issues.