Restore Full Electrical Function to Your GM Van or Truck
If you’re dealing with baffling electrical problems in your 2004-2007 GMC Savana 2500âlike a dead climate control panel on a hot day, power windows with a mind of their own, or a security light that prevents your work van from startingâyou’ve likely met the common culprit: a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and hard-to-diagnose issues. This replacement BCM, part number 15137395, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
Case Study: The Ghost in the Work Van
A local contractor brought his 2006 Savana 2500 into my shop, completely fed up. His van would randomly refuse to start, the radio would cut out, and the blower motor worked only when it wanted to. He’d already replaced the battery and checked the fuses. After connecting my scanner, I saw a handful of communication codes, including the notorious B1001. These ‘ghost’ issues are classic signs of an internal BCM failure. We swapped in a VIN-programmed module, and in less than 10 minutes, every single issue was resolved. He was back on the road to his next job, saving hundreds compared to a dealership visit.
Is Your Savana Van Showing These BCM Failure Signs?
A failing BCM doesn’t always trigger a check engine light. Instead, look for these tell-tale symptoms that I’ve seen hundreds of times on the GM GMT800 platform:
- â Intermittent or non-functional HVAC and climate controls.
- â Power windows, door locks, or interior lights behaving erratically or not working at all.
- â The security or anti-theft system causing a no-start or no-crank condition.
- â An illuminated airbag light, often accompanied by a B1001 diagnostic trouble code.
- â Unpredictable wiper operation or horn malfunctions.
- â Communication errors with other vehicle modules.
Your 5-Minute BCM Installation Guide
Getting your van back to 100% is easier than you think. For the Savana and Express vans, the BCM is located in the center of the dash, making it one of the simplest module replacements. No professional lift or complex tools are needed.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents shorts and helps reset the vehicle’s systems.
- Locate the Module: On your Savana or Express Van, find the BCM mounted in the center dash area. For most GM trucks and SUVs, it’s typically under the steering column. It will have several large electrical connectors.
- Swap the Part: Carefully unplug the wiring harnesses from the old module. Unbolt or unclip the old BCM and remove it. Mount the new module in its place and securely reconnect all wiring harnesses.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, windows, locks, HVAC, and wipers to confirm the repair was successful.
Post-Installation Note: In some cases, particularly if the airbag light was on, a ‘Setup SDM Primary Key in BCM’ procedure may be needed using a professional scan tool to sync the airbag system. This is a simple procedure for any qualified technician.
Why Choose a VIN-Programmed 2004-2007 Savana 2500 BCM?
Our service eliminates the most significant hurdle in modern auto repair: module programming. We flash this BCM with your vehicleâs unique VIN and the latest GM software updates before it ships. This ensures it communicates perfectly with your van’s existing componentsâthe Engine Control Module (ECM), Transmission Control Module (TCM), and security systemâright out of the box. You get OEM-level performance without the dealership’s high programming fees and scheduling delays. Plus, with no core charge, you don’t have to worry about the cost or hassle of sending your old part back.
Verified Fitment for Your GM Truck or Van
This module is a direct replacement for part number 15137395 and is interchangeable with a wide range of other part numbers, including 15116066, 15136225, and 15198116. It is guaranteed to fit the following vehicles, among others:
- GMC Savana 1500/2500/3500 Van (2004-2007) – w/commercial tradesman package (opt PRP)
- Chevrolet Express 1500/2500/3500 Van (2004-2007) – w/commercial tradesman package (opt PRP)
- Chevrolet Silverado & GMC Sierra 1500/2500/3500 (2003-2007 Classic)
- Chevrolet Avalanche, Suburban, Tahoe (2003-2006)
- GMC Yukon & Yukon XL (2003-2006)
- Cadillac Escalade, ESV, EXT (2003-2006)
- Hummer H2 (2003-2007)
Frequently Asked Questions
Why does this BCM need to be programmed to my VIN?
Programming the BCM with your VIN ensures it correctly communicates with the other modules in your vehicle, like the engine computer and anti-theft system. This step is critical for proper function and prevents compatibility issues that would otherwise require a dealership visit.
Can I install this module myself?
Absolutely. For a DIYer with basic tools, this is a straightforward job. The module is typically located in the center dash on Savana/Express vans and is easily accessible. The entire process often takes less than 15 minutes.
What if my airbag light stays on after installation?
If the airbag light remains on, it means the new BCM needs to be electronically ‘introduced’ to the airbag system (SDM). A mechanic with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
What does the Body Control Module actually do?
The BCM is the brain for your vehicle’s comfort and convenience features. It controls power windows, door locks, interior and exterior lighting, wipers, the horn, HVAC blower motor, and the security system. When it fails, these systems become unreliable.
Is there a core charge for this part?
No, there is absolutely no core charge. You can keep your old module without any extra fees or the hassle of returning it.