Restore Full Functionality to Your GMC Savana Van
If you’re dealing with baffling electrical issues in your 2004-2007 GMC Savana 3500, the Body Control Module (BCM) is often the culprit. As the central command for your van’s body electronics, a failing BCM can cause a cascade of problems, from non-working power windows and door locks to a dead HVAC system or even a no-start condition. This isn’t just an annoyance; for a work vehicle, it’s downtime that costs you money. This replacement Body Control Module, part number 10383536, comes pre-programmed to your van’s specific Vehicle Identification Number (VIN). This means you can skip the expensive trip to the dealership for programming—it’s a true plug-and-play solution designed to get your workhorse back on the road quickly and reliably.
Case Study: A Tricky Diagnosis
I recently had a 2006 Savana 2500 work van towed to my shop. The owner said the battery kept dying, the radio would turn on by itself, and sometimes the power locks wouldn’t work. He’d already replaced the battery and alternator. After hooking up my scan tool, I saw a handful of communication codes (U-codes) and a B1001 DTC. In my 20+ years of experience, these ghost-like electrical problems on GM vans and trucks almost always point back to the BCM. A quick check of the BCM’s power and ground circuits confirmed they were good, indicating an internal failure in the module itself. We installed a VIN-programmed BCM, and within 10 minutes, all symptoms were gone. This is a classic failure I’ve diagnosed hundreds of times, and a pre-programmed module is the most efficient fix.
Is Your Work Van Showing These Signs?
A faulty BCM can manifest in numerous ways. If your Savana is experiencing any of the following, it’s time to consider a replacement:
- ✔ The HVAC blower motor works intermittently or not at all.
- ✔ Power windows, mirrors, or door locks are unresponsive or act erratically.
- ✔ The security system prevents the van from starting or triggers false alarms.
- ✔ You see an airbag warning light on the dash, possibly with a B1001 code.
- ✔ Interior dome lights or exterior lights (headlights/taillights) don’t function correctly.
- ✔ The instrument cluster displays strange warnings or gauges behave abnormally.
A Straightforward Guide to Installation
Replacing the 2004-2007 Savana 3500 BCM is a simple job that most DIYers or any professional can complete in minutes. For Savana and Express vans, the module is located behind the center dash trim.
- 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 systems.
- Locate the BCM: On Savana/Express vans, you’ll find the BCM in the center dash area. You may need to remove a lower trim panel for access. It’s a black box with several multi-pin electrical connectors.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Remove any mounting screws or clips holding the old module in place, then install the new module.
- Reconnect and Test: Securely plug all connectors into your new, pre-programmed BCM. Reconnect the battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and the HVAC system to confirm the repair.
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 bi-directional scan tool to sync the new BCM with the airbag system. This is a simple procedure for any professional technician.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part number 10383536 and is interchangeable with several other GM part numbers, including 15116066, 15136225, and 15198116. While this page focuses on the 2004-2007 Savana 3500 BCM, it is also verified to fit the following vehicles. Please confirm your vehicle and options below:
- Chevrolet Express 1500/2500/3500 Van (2004-2007) – Body Control (BCM); center dash, w/commercial tradesman package (opt PRP)
- GMC Savana 1500/2500/3500 Van (2004-2007) – Body Control (BCM); center dash, w/commercial tradesman package (opt PRP)
- Chevrolet Avalanche 1500/2500 (2003-2006) – Body Control (BCM); under steering column
- Chevrolet Silverado & GMC Sierra 1500/2500/3500 (2003-2007 Classic) – Body Control (BCM); under steering column (check for specific cab/trans options)
- Chevrolet Suburban/Tahoe & GMC Yukon/XL (2003-2006) – Body Control (BCM); under steering column
- Cadillac Escalade, ESV, EXT (2003-2006) – Body Control (BCM); under steering column
- Hummer H2 (2003-2007) – Body Control (BCM); LH dash
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean for me?
It means the module arrives ready for installation. We flash it with your vehicle’s specific VIN and the latest GM software before shipping. This ensures it communicates correctly with your van’s other computers, like the ECU and TCM, without requiring a trip to the dealer for expensive programming.
Do I need to return my old BCM? Is there a core charge?
No. We believe in a hassle-free process. There is no core charge on this module, and you are not required to send your old, faulty part back to us.
Why is my airbag light still on after installing the new BCM?
This is normal in some cases. The new BCM needs to be electronically ‘introduced’ to the vehicle’s Sensing and Diagnostic Module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool to sync the systems and turn off the light.
Can I install this myself if I’m not a mechanic?
Absolutely. For the Savana/Express vans, the BCM is accessible in the center dash. With basic tools and our guide, it’s a very straightforward swap that typically takes less than 15 minutes. The most important part is that no programming is needed on your end.
Will this BCM fix my specific problem?
This module corrects issues directly controlled by the BCM, such as power accessories, lighting, security, and HVAC functions. While it resolves the most common electrical faults, always ensure your vehicle has been properly diagnosed. Problems like a bad ground wire or a faulty switch can mimic BCM failure.