Restore Full Electrical Control to Your GM Van or Truck
Are you chasing down frustrating electrical gremlins in your 2004-2007 GMC Savana 1500? Intermittent wipers, flickering lights, or a security system that has a mind of its own are classic signs of a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen how a faulty BCM can turn a reliable workhorse into a source of constant headaches. This module is the central command for your vehicle’s body electronics, and when it fails, it can cause a cascade of seemingly unrelated problems. This replacement BCM, part number 15136225, is the definitive solution to restore order and functionality.
The biggest advantage we offer is pre-configuration to your vehicle’s specific VIN. This means you can skip the expensive and time-consuming trip to the dealership for programming. We handle all the software updates and configuration before it ships, making the installation a true plug-and-play process. This is especially critical for a part like the 2004-2007 Savana 1500 BCM, which needs to communicate perfectly with other modules like the ECU and airbag system right out of the box.
Case Study: A Tricky Diagnosis
A customer brought in his 2006 Savana 2500 work van last month with a bizarre list of complaints: the radio would cut out, the dome light wouldn’t work, and sometimes the van wouldn’t start, showing a security light. He’d already replaced the battery and checked the fuses. After connecting my scanner, I saw a handful of communication loss DTCs pointing to the BCM. These modules often fail internally from heat cycles and vibration, causing micro-fractures in the circuit board. We installed one of our VIN-programmed BCMs, and in under 10 minutes, every single issue was resolved. It’s a common failure point I’ve diagnosed on hundreds of these GM vans and trucks.
Is Your Vehicle Showing These Symptoms?
- ✔ Power windows or door locks operating erratically or not at all.
- ✔ HVAC blower motor or climate controls failing to respond.
- ✔ An active airbag warning light, often with a B1001 diagnostic trouble code.
- ✔ Vehicle security system issues, including no-start conditions where the engine won’t crank.
- ✔ Interior or exterior lights (headlights, brake lights) behaving strangely.
- ✔ A cluster of seemingly random electrical DTCs stored in the system.
A Straightforward Guide to Your 2004-2007 Savana 1500 BCM Installation
For most DIYers and professional mechanics, this is a quick and simple job. The key is our VIN programming, which eliminates the most complex step. Follow these instructions for a smooth replacement.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and to help reset the vehicle’s electronic systems.
- Locate the Module: In GMC Savana and Chevrolet Express vans, the BCM is typically found in the center dash area. For most GM trucks and SUVs, it’s located under the driver’s side of the dashboard, near the steering column.
- Swap the Part: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Remove any mounting screws or clips holding the old module in place, then install the new BCM and reconnect the wiring harnesses securely.
- Reconnect Power: Reattach the negative battery terminal.
- Post-Installation Checks: After installation, you may need a capable diagnostic scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the airbag light. Some vehicles might also require a brake pedal position sensor recalibration. Test all functions—lights, locks, windows, and wipers—to confirm the repair.
Verified Vehicle Compatibility
This Body Control Module is a direct-fit replacement for a wide range of General Motors vehicles. It is interchangeable with part numbers 15116066, 10383536, 15136877, and others. While this page is focused on the 2004-2007 Savana 1500 BCM, it also fits the following models. Please verify your part number or consult the fitment list below.
EXPRESS 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)
EXPRESS 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)
EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
AVALANCHE 1500/2500 03-06 Body Control (BCM); (under steering column)
SILVERADO 1500/2500/3500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SIERRA 1500/2500/3500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SILVERADO & SIERRA (Classic Style) 07 Body Control (BCM); (under steering column), Crew Cab
TAHOE & YUKON 03-06 Body Control (BCM); (under steering column)
SUBURBAN & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
ESCALADE, ESV, EXT 03-06 Body Control (BCM); (under steering column)
HUMMER H2 04-07 Body Control (BCM); (LH dash)
Frequently Asked Questions
What exactly does VIN programming do for me?
VIN programming configures the BCM with your vehicle’s specific software and options package before it ships. This ensures all features work correctly upon installation without needing a dealership visit, saving you time and money.
Is this a difficult part for a DIYer to install?
No, this is one of the more straightforward electronic module replacements. With basic hand tools and our pre-programmed module, the physical swap typically takes less than 15 minutes. The main challenge is accessing it under the dash.
Will this BCM fix my airbag light?
A faulty BCM is a common cause of an airbag light with DTC B1001. Replacing it often resolves the root cause, but you will still need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a compatible scan tool to turn off the light after installation.
Do I need to return my old BCM (core charge)?
No, there is no core charge for this part. You can keep or dispose of your old module without any hassle.
What is the warranty on this part?
This Body Control Module comes with a one-year warranty, giving you peace of mind and confidence in your repair.