Is your GM truck or van experiencing bizarre electrical problems?
If you’re dealing with flickering lights, malfunctioning power windows or locks, a security light that won’t turn off, or other strange electronic issues, a failing Body Control Module (BCM) is the most likely cause. The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can create a cascade of frustrating problems. This replacement BCM is the definitive solution to restore full functionality and reliability to your vehicle.
From the Diagnostic Bay
We had a 2002 Silverado in the shop that was driving the owner crazy. The battery would be dead every other morning. We checked for draws and found the interior dome light was staying on, even with the doors closed and the switch off. The culprit wasn’t a bad switch or a shorted wire; it was a faulty BCM that had lost its ability to correctly interpret the door latch signals. Swapping in a VIN-programmed BCM like this one solved the battery drain and got the truck back on the road for good.
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 or not turning on.
- ✔ The security system acting up, causing a no-start condition or the horn to sound randomly.
- ✔ Dashboard warning lights, particularly the ‘Security’ light, illuminating for no reason.
- ✔ Inaccurate or non-functional gauges on the instrument cluster.
- ✔ Radio or climate control systems behaving erratically.
Why Choose Our Pre-Programmed 2002 GM Body Control Module?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle and expense out of the repair by programming the module to your vehicle’s specific VIN before it ships. This means you get a BCM loaded with the latest GM software updates, which often correct factory bugs and improve performance. Simply provide us with your VIN after purchase, and we’ll handle the rest. You get a plug-and-play part without the need for an expensive trip to the dealership for programming.
Installation & Post-Install Procedures
Installation is straightforward for a DIYer with basic tools. The BCM is typically located under the steering column or behind the center dash panel. After disconnecting the battery, you can unbolt the original module, disconnect the wiring harnesses, and install the new one in its place. Once installed, you may need to perform one or more of the following procedures:
- Airbag System Sync: If the 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 the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be required to ensure correct brake light operation and to satisfy the traction control system.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Fitment and Part Number Compatibility
This 2002 GM Body Control Module is a direct replacement for a wide range of GM trucks, vans, and SUVs. It is compatible with the following part numbers: 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It fits models such as the Chevrolet Silverado, Suburban, Tahoe, Avalanche, Blazer, Astro, S10 and the GMC Sierra, Yukon, Safari, and Sonoma. Please verify your part number to ensure compatibility.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We program the module to your vehicle’s VIN before we ship it to you. It arrives ready for installation, saving you time and money.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship the part until we receive this information.
What does the Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions, including power windows, locks, lights, security system, wipers, and more.
Where is the BCM located on my 2002 GM truck?
It is typically found in one of two places: under the driver’s side dashboard near the steering column, or behind the center dash panel, accessible after removing radio and climate controls.
What if my airbag light turns on after I install it?
This indicates the BCM needs to be synced with the airbag module (SDM). A ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional-grade diagnostic tool.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module.