Is Your GM Truck Experiencing Bizarre Electrical Problems?
If your 2002 Silverado, Sierra, Tahoe, or other compatible GM vehicle is suffering from strange electrical issues, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central command center for your truck’s body electronics. When it fails, it can cause a cascade of frustrating problems, from flickering lights and malfunctioning power windows to a vehicle that won’t start at all. This replacement BCM, part number 15081796, is the definitive solution to restore your vehicle’s functionality and peace of mind.
From the Diagnostic Bay
We had a 2002 GMC Sierra in the shop that was driving its owner crazy. The power locks would cycle on their own, the dome light would stay on, and occasionally the truck would refuse to start, showing the security light. The owner had already replaced the lock actuators and a door switch with no luck. After a quick scan, we saw communication codes pointing to the BCM. Instead of more guesswork, we installed a VIN-programmed module like this one. The problems vanished instantly. It’s a classic case where targeting the central controller saves time, money, and a lot of headaches over chasing individual symptoms.
Common Symptoms of a Failing BCM
- ✔ Power windows, mirrors, or door locks working intermittently or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome light) staying on, flickering, or not turning on.
- ✔ The security or anti-theft light is illuminated, preventing the engine from starting.
- ✔ Instrument cluster gauges behaving erratically or displaying incorrect information.
- ✔ The radio or climate control system is unresponsive or malfunctioning.
- ✔ False warning messages on the driver information center, such as “Service 4WD”.
Why Our 2002 Silverado 2500 BCM is the Best Solution
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and hassle out of the repair. Simply provide us with your vehicle’s VIN during or after your purchase, and our technicians will program the module with the latest GM software specific to your truck. This ensures perfect compatibility and function right out of the box. There’s no need for an expensive trip to the dealership for programming. Plus, with no core charge, you can keep your original module.
This module is a direct replacement for a wide range of part numbers, including: 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It fits a huge variety of 2002-2005 GM trucks and vans, including the Silverado, Sierra, Suburban, Tahoe, Yukon, Astro, Safari, Blazer, and S10/Sonoma.
Installation and Post-Install Notes
Installation is straightforward for a DIYer with basic tools. The BCM is typically located under the steering column or in the center dash area. While our VIN programming handles the majority of the setup, some vehicles may require one or two simple relearn procedures after installation:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with your vehicle’s airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure your brake lights and traction control system function correctly.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, you will receive an email with instructions on where to send your VIN. You can also add it to the order notes during checkout. We cannot ship your part until we receive your VIN.
Is this part truly plug-and-play?
Yes, for most vehicles. It comes programmed to your VIN. However, as noted, a small number of vehicles may require an additional relearn procedure for the airbag or brake pedal position sensor, which may require a professional scan tool.
Will this BCM fit my vehicle?
This module fits a wide range of 2002-2005 GM trucks and vans. Please check the fitment list on this page and ensure your original part number is one of the listed compatible numbers (15063578, 15081796, 15095334, etc.) to guarantee a perfect match.
Do I need to send my old BCM back?
No. This product has no core charge, so you can keep your original part.
What if the airbag light comes on after I install it?
This indicates that the BCM needs to be synced with the airbag system’s Supplemental Deployment Module (SDM). A mechanic with a high-level diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.