Are you battling frustrating electrical issues in your 2002 GM truck or van? Flickering lights, malfunctioning power windows, or a security system that acts up on its own are common signs of a failing Body Control Module (BCM). This vital component is the central hub for your vehicle’s body electronics, and when it fails, it can cause a wide range of perplexing problems. Restore your vehicle’s functionality and peace of mind with our expertly programmed BCM, a direct-fit solution for part number DPNU and many others.
This is not just a replacement part; it’s a complete, ready-to-install solution. Upon purchase, simply provide us with your vehicle’s VIN. Our technicians will then program the module with the latest official GM software specific to your truck or van. This critical step ensures seamless integration and proper communication with your vehicle’s other systems, eliminating the need for an expensive trip to the dealership for programming. This is the most reliable way to fix issues stemming from a faulty 2002 Sierra BCM.
From the Diagnostic Bay
We had a 2002 Silverado 2500 in the shop that was driving the owner crazy. The dome lights would stay on, the radio would randomly shut off, and the power locks worked intermittently. He had already replaced the battery and checked all the fuses. After a quick scan, we saw multiple communication codes pointing to the BCM. Instead of just swapping in a used module, we installed one of our VIN-programmed units. The moment it was connected, all the ghost-like electrical problems vanished. It’s a textbook example of how a correctly configured BCM is the true fix, saving hours of diagnostic guesswork.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, mirrors, and door locks.
- ✔ Interior or exterior lights that flicker, stay on, or won’t turn on at all.
- ✔ The anti-theft or security system preventing the vehicle from starting.
- ✔ Inoperative or inaccurate dashboard gauges and warning lights.
- ✔ Intermittent operation of the radio or climate controls.
- ✔ Diagnostic trouble codes related to U-codes (communication) or B-codes (body).
Why Choose Our Programmed 2002 Sierra BCM?
Our process is designed for reliability and convenience. By programming the module to your VIN, we ensure it has the correct software and configuration for your vehicle’s specific options. This unit is a direct replacement for multiple part numbers, including 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. While the module is designed for straightforward installation, some vehicles may require simple post-installation relearn procedures. If the airbag light appears, a ‘Setup SDM Primary Key in BCM’ procedure may be needed. Additionally, a ‘Brake Pedal Position Relearn’ might be necessary for proper brake light and traction control function. These procedures can often be performed with a high-level scan tool.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors a wide variety of non-engine-related functions. This includes power windows, locks, lights, wipers, the security system, and more.
How do I know if my BCM is the problem?
Common signs include multiple, unrelated electrical issues happening at once, such as flickering lights, faulty gauges, and power lock/window problems. A professional diagnosis with a scan tool that can communicate with the BCM is the best way to confirm.
What do you need from me after I order?
After you place your order, we will need you to provide your vehicle’s 17-digit Vehicle Identification Number (VIN). This allows us to program the module with the correct software for your specific vehicle configuration before we ship it.
Is this part difficult to install?
The physical installation is typically straightforward, involving unplugging the old module and plugging in the new one. It’s usually located under the steering column or in the center dash. However, be aware that some models may require a simple ‘relearn’ procedure for the airbag or brake systems, which may require a professional diagnostic tool.
Does this BCM fit vehicles other than the Sierra?
Yes, this BCM is compatible with a wide range of 2002-2005 GM vehicles, including the Silverado, Tahoe, Yukon, Suburban, Astro, Safari, Blazer, and S10/Sonoma. Please check the fitment list and part numbers to ensure compatibility.