Is Your GM Truck or Van Plagued by Electrical Gremlins?
If you’re dealing with flickering lights, malfunctioning power windows, a security system that has a mind of its own, or a battery that mysteriously drains overnight, a failing Body Control Module (BCM) is the likely culprit. The BCM is the central nervous system for your vehicle’s body electronics, and when it starts to fail, it can cause a wide range of frustrating and unpredictable problems. This replacement BCM, part number 19208537, is the definitive solution to restore full functionality and reliability to your vehicle.
From the Diagnostic Bay
We had a 2002 Sierra 2500 in the shop that was driving its owner crazy. The horn would go off randomly, the interior lights would stay on, and sometimes the truck just wouldn’t start. The owner had already replaced the battery twice. After running diagnostics, we traced all the phantom electrical draws back to a faulty BCM. Instead of a costly trip to the dealership for a new module and programming, we installed one of our pre-programmed units. The truck was back to normal the same day, and the owner was relieved to finally have a reliable vehicle again. This is a classic BCM failure scenario we see all the time.
Symptoms of a Failing 2002 Sierra Body Control Module
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s time to consider a replacement:
- ✔ Erratic or non-functional power windows, mirrors, and door locks.
- ✔ Interior dome lights or exterior lights that won’t turn on or off.
- ✔ The security system light is flashing, or the alarm sounds for no reason.
- ✔ The horn is either inoperative or sounds randomly.
- ✔ Inconsistent operation of the heating and air conditioning (HVAC) system.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire up.
- ✔ The “Service Vehicle Soon” light is illuminated on your dashboard.
- ✔ Unexplained battery drain that leaves you with a dead battery.
A True Plug-and-Play Solution
Don’t waste time and money at the dealership. We make the replacement process simple. After you place your order, simply provide us with your vehicle’s VIN. Our technicians will program this module with the latest GM software specific to your truck or van. It arrives at your door ready for installation, eliminating the need for expensive scan tools or dealer programming. This module is a direct replacement for a wide range of part numbers, including 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. Plus, with our no-core-charge policy, you can keep your old module.
Post-Installation Information
While this module is designed to be a straightforward installation, some vehicles may require additional steps to ensure all systems communicate correctly. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional diagnostic tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure proper brake light and traction control functionality.
Always consult a factory service manual or a qualified technician for vehicle-specific guidance.
Frequently Asked Questions
How does the VIN programming work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. Our technicians use this number to load the correct GM software and vehicle-specific settings onto the module before we ship it to you.
Is this part truly plug-and-play?
Yes, for the vast majority of vehicle functions. It comes programmed and ready to install. However, as noted, some vehicles may require an additional relearn procedure for the airbag or brake systems, which requires a professional scan tool.
What happens if I forget to provide my VIN?
We cannot ship the module without your VIN. Programming is a critical step that ensures the BCM will function correctly with your vehicle’s specific options and security system. We will contact you to retrieve the VIN if it is not provided.
Will this BCM fit my vehicle?
This module fits a wide range of 2002-2005 GM trucks and vans, including the Silverado, Sierra, Tahoe, Yukon, Suburban, Astro, Safari, and S10/Blazer series. Please check the detailed fitment list on this page and match your original part number to ensure compatibility.
Do I need to send my old BCM back?
No. This product has no core charge, so you are not required to return your original module.
What tools are needed for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn procedures require a professional-grade bidirectional diagnostic scan tool, such as a GM Tech 2 or equivalent. Most DIY code readers cannot perform these functions.