End the Electrical Headaches in Your Chevy Express Van
If you’re dealing with a 2004-2007 Express 1500 Van that seems to have a mind of its own—flickering lights, a dead HVAC system, or power locks that work intermittently—you’re not just inconvenienced; you’re losing time and money. As the central command for your van’s body electronics, a failing Body Control Module (BCM) can cause a cascade of frustrating and hard-to-diagnose issues. This isn’t just another part; it’s the solution to restoring order and reliability to your workhorse vehicle. This replacement BCM, part number 15137395, comes fully programmed to your van’s specific VIN, eliminating the need for expensive dealership programming and getting you back on the road faster.
A Technician’s Notebook: The Ghost in the Work Van
I remember a fleet manager bringing in a 2006 Express 2500 that was driving his crew crazy. The radio would shut off, the dome light would stay on, and worst of all, the battery would be dead some mornings. They had already replaced the battery and alternator. After checking for parasitic draws and finding nothing consistent, I went straight for the BCM. These modules, especially on high-mileage work vans, are prone to internal solder joint failures from years of vibration and thermal cycles. Swapping in a VIN-programmed BCM solved every single phantom issue. It’s a repair I’ve done hundreds of times, and it underscores how a single module can be the root of dozens of seemingly unrelated problems.
Is Your Express Van Showing These Electrical Faults?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your BCM needs replacement:
- ✔ Unresponsive or erratic HVAC controls, including a blower motor that won’t turn on or off.
- ✔ Power windows, mirrors, or door locks operating intermittently or not at all.
- ✔ An illuminated airbag warning light, often accompanied by diagnostic trouble codes (DTCs) like B1001.
- ✔ Malfunctions with the anti-theft or security system, leading to no-start conditions.
- ✔ Interior or exterior lights flickering, staying on, or not working.
- ✔ A cluster of seemingly unrelated electrical communication codes stored in the system.
A Straightforward Guide to BCM Installation
For the Chevy Express and GMC Savana vans, this is a surprisingly simple job that most DIYers or fleet mechanics can complete in under 15 minutes. Our VIN programming makes it a true plug-and-play solution.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents short circuits and helps reset the vehicle’s electronic systems.
- Locate the BCM: In the 2004-2007 Express and Savana vans, the BCM is typically located in the center of the dashboard, often accessible by removing a lower dash panel. It’s a black plastic box with several large multi-pin connectors.
- Swap the Module: Carefully unplug the wiring harness connectors from the old BCM. They have locking tabs that need to be depressed. Remove any mounting bolts or clips holding the old module in place, then install the new module.
- Reconnect and Test: Securely plug all wiring harnesses into your new BCM. Reconnect the battery terminal. Start the vehicle and test all functions: lights, wipers, windows, door locks, and the HVAC system.
- Post-Installation Checks: In some cases, an airbag light may persist. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a simple sync function, not a full reprogramming.
Verified Fitment for Your GM Vehicle
This Body Control Module is a direct-fit replacement for a wide range of GM trucks and vans. It is interchangeable with part numbers 10383536, 15116066, 15136225, 15136877, 15137393, 15137394, 15137395, 15137396, 15198116, 15257043, and more. Please verify your vehicle in the list below:
EXPRESS 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
AVALANCHE 1500 03-06 Body Control (BCM); (under steering column)
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
SILVERADO 1500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SILVERADO & SIERRA (Classic) 07 Body Control (BCM); (under steering column), Crew Cab
SILVERADO & SIERRA 2500/3500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
TAHOE & YUKON 03-06 Body Control (BCM); (under steering column)
SUBURBAN & YUKON XL 03-06 Body Control (BCM); (under steering column)
CADILLAC ESCALADE, ESV, EXT 03-06 Body Control (BCM); (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
Frequently Asked Questions
Frequently Asked Questions
What does a ‘VIN-programmed’ BCM mean for my 2004-2007 Express 1500 BCM?
It means we flash the module with your vehicle’s unique Vehicle Identification Number (VIN) before shipping. This ensures it communicates perfectly with your van’s other computers (like the ECU and TCM) and has the correct software for your specific options, making installation plug-and-play without a trip to the dealer.
Is this part difficult to install myself?
Not at all. For an Express van, it’s one of the easier module replacements. You’ll only need basic hand tools to access the module in the center dash area. The entire process typically takes less than 15-20 minutes.
My airbag light is on. Will this BCM fix it?
If the airbag light is caused by a faulty BCM (like DTC B1001), this part will resolve the root cause. However, after installation, the new BCM may need to be electronically ‘introduced’ to the airbag system (SDM) using a scan tool. This is a quick procedure called ‘Setup SDM Primary Key’ that a mechanic can perform.
Do I need to send my old BCM back for a core charge?
No, there is absolutely no core charge or need to return your old part. You can keep it or dispose of it at your convenience.
What if I have other electrical problems after installation?
This BCM will fix issues directly related to its function. If other problems persist, it may indicate a separate issue, such as a bad ground, a wiring problem, or a fault in another component. Always ensure your battery and charging system are in good health, as low voltage can cause strange behavior in many modules.