Restore Full Electrical Function to Your GM Van
Are you experiencing a frustrating array of electrical problems in your Chevrolet Express or GMC Savana? From flickering lights and non-responsive power windows to a dead instrument cluster or even a no-start condition, these are classic signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics. When it fails, it can create confusing and widespread issues. This genuine GM-quality Body Control Module, part number 15137393, is the definitive solution, arriving pre-programmed to your van’s specific VIN for a true plug-and-play installation.
We had a 2006 Express 2500 work van come in that was a real head-scratcher. The customer complained of the battery dying overnight and the radio staying on after the key was out. They had already replaced the battery and alternator twice. A parasitic draw test pointed to a significant power drain, but pinpointing it was difficult. After isolating circuits, we traced the fault to the BCM. It was failing to send the ‘sleep’ command to other modules, causing them to stay active and drain the battery. A new, programmed BCM fixed the issue completely, saving the customer from further parts-swapping and downtime.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior or exterior lights staying on, flickering, or failing to work.
- ✔ Malfunctioning HVAC controls or an inoperative blower motor.
- ✔ Security system faults, leading to unexpected alarms or a no-start condition.
- ✔ An illuminated airbag warning light, often with DTC B1001.
- ✔ Inaccurate gauge readings or a dead instrument cluster.
- ✔ Communication errors with other vehicle modules, triggering various warning lights.
Your Solution: A Pre-Programmed 2004-2007 Express BCM
Don’t let a faulty module keep your van off the road. This replacement BCM is meticulously prepared to match your vehicle’s factory settings. We flash it with the latest GM software updates using your Vehicle Identification Number (VIN). This critical step ensures that all existing features work correctly right out of the box, eliminating the need for an expensive trip to the dealership for programming. It’s a simple, effective fix that restores the reliability you depend on.
Installation and Post-Install Notes
Installation is straightforward for anyone with basic mechanical skills. The BCM is typically located in the center dash area on Express and Savana vans. Simply disconnect the battery, remove the old module, plug in the new one, and reconnect the battery. In most cases, the vehicle will start and function normally immediately. However, be aware of potential post-installation procedures:
- Airbag System Sync: If the airbag light remains on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required using a professional scan tool.
- Brake Sensor Relearn: Some models may require a brake pedal position sensor relearn to ensure proper brake light and stability control function.
There is no core charge for this part, so you can keep your old module without the hassle of returning it.
Frequently Asked Questions
What does the Body Control Module (BCM) do in my Express van?
The BCM acts as the central computer for your van’s body electronics. It controls non-engine related functions like power windows, door locks, interior/exterior lighting, the security system, wipers, and the climate control system.
Is this BCM difficult to install?
No, the physical installation is typically very simple, often taking less than 15 minutes. It involves unplugging the old module and plugging in the new one. No special tools are required for the replacement itself, though a scan tool might be needed for post-install procedures in some cases.
Why is VIN programming so important?
VIN programming loads your van’s specific software and options into the BCM. Without it, the module won’t recognize your vehicle’s features, leading to incorrect operation of systems like power locks, security, or lighting. Our pre-programming makes it a true plug-and-play part.
What should I do if my airbag light is on after installing the new BCM?
If the airbag light is on, the BCM needs to be synced with the airbag system’s SDM module. This requires a ‘Setup SDM Primary Key in BCM’ procedure, which must be performed by a technician with a compatible high-level diagnostic scan tool.
Does this part have a warranty?
Yes, this Body Control Module comes with a one-year warranty, ensuring it provides lasting and dependable performance for your vehicle.