Is your Chevrolet Express or GMC Savana van plagued by bizarre electrical problems? The Body Control Module, or BCM, is the central command center for your vehicle’s body electronics, and when it fails, it can cause a host of frustrating issues. This replacement Body Control Module, part number 15819552, is the definitive solution to restore full functionality to your vehicle. We take the hassle out of the repair by programming the module to your van’s specific VIN before shipping, ensuring a straightforward installation process.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior dome lights or exterior lights staying on or not working at all.
- ✔ The security system acting up, potentially causing a no-start condition.
- ✔ Instrument cluster gauges behaving erratically or warning lights appearing for no reason.
- ✔ Intermittent operation of the radio or HVAC climate control system.
- ✔ False ‘door ajar’ warnings on the dashboard.
Why Choose Our Programmed Express 3500 BCM?
Replacing a BCM isn’t just a simple swap. A new module from a dealership requires expensive programming with specialized tools. Our service eliminates that step. By providing your VIN during checkout, you receive a unit that is loaded with the latest GM software and is calibrated specifically for your vehicle’s options and features. This makes the installation process as close to plug-and-play as possible, getting your work van or passenger van back in service with minimal downtime.
Installation Note: While this module is pre-programmed, some vehicles may require additional post-installation procedures. For example, if your airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ may be necessary on certain models. Always consult a factory service manual or a qualified technician for guidance.
This module is a direct replacement for a wide range of part numbers, ensuring broad compatibility across many GM models. Please verify your part number against the list provided to ensure correct fitment.
Frequently Asked Questions
What does the Body Control Module (BCM) do on my Express van?
The BCM acts as the brain for your van’s electronic accessories. It controls functions like power windows, locks, interior and exterior lighting, the security system, and even parts of the climate control.
Do I need to get this module programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide your vehicle’s VIN at checkout, and it will arrive ready for installation, saving you time and money.
What is the most common sign of a bad Express 3500 BCM?
While symptoms vary, the most common indicators are multiple, unrelated electrical issues happening at once, such as flickering lights, malfunctioning power locks, and strange behavior from the instrument cluster.
What if my airbag light turns on after I install the BCM?
If the airbag light is on, the vehicle’s Supplemental Inflatable Restraint (SIR) system needs to be synced with the new BCM. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Do I need to return my old BCM? Is there a core charge?
No, there is no core charge for this part. You can keep your original module.