Tired of Your Truck’s Electrical Gremlins?
If you’re dealing with flickering lights, power windows with a mind of their own, a security light that won’t turn off, or a truck that refuses to start, you’re not alone. As a technician with over two decades of experience, I’ve seen these exact frustrations drive truck owners crazy. The culprit is often a failing Body Control Module (BCM)—the central nervous system for your vehicle’s electronics. A faulty BCM can cause a cascade of bizarre, intermittent problems that are a nightmare to diagnose. It controls everything from your interior lights and power locks to the anti-theft system, and when it goes, it takes your truck’s reliability with it.
This isn’t just an inconvenience; it’s a breakdown of your vehicle’s core functions. But the fix doesn’t have to involve expensive dealership visits and complex programming sessions. We have a direct, reliable solution.
A Technician’s Notebook: The Silverado That Wouldn’t Cooperate
A few months back, a 2002 Silverado 2500 was towed into my bay. The owner was at his wit’s end. The gauges would randomly die, the radio would shut off, and the security light was always on, causing an intermittent no-start. He had already replaced the battery and checked the grounds. The dealership quoted him over $800 for a new BCM plus programming. We identified the BCM as the issue, but instead of the dealer route, we used one of our pre-programmed modules. After providing the VIN, we received the BCM, installed it in under 30 minutes, and the truck fired right up with zero issues. All the strange electrical problems vanished. This is the exact, hassle-free solution we offer you.
Is Your GM Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution your vehicle needs. Check for diagnostic trouble codes (DTCs) like U0140, B1001, or B1327, which often point directly to BCM failure.
- âś” Erratic or non-functional power windows, door locks, or mirrors.
- âś” Interior dome lights or dashboard lights staying on or not working at all.
- âś” The security or anti-theft light is illuminated, preventing the engine from starting.
- âś” Horn honking unexpectedly or not working when pressed.
- âś” Wipers activating on their own or not responding to the switch.
- âś” Communication errors with other modules on the vehicle network.
- âś” False warnings on the driver information center (DIC).
The Smart Solution: A VIN-Programmed 2002 Silverado 3500 BCM
Forget the hassle. This Body Control Module arrives at your door ready for installation. We take your vehicle’s VIN and professionally program the module with the latest, most stable software updates from GM. This ensures perfect compatibility and function right out of the box. You are getting a reliable part that restores the performance and dependability you expect from your truck or van, without the need for specialized dealer tools for programming.
Your Straightforward BCM Installation Guide
- âś” Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- âś” Locate the BCM: On most compatible trucks (Silverado, Sierra, Tahoe, Yukon), the BCM is located under the driver’s side of the dashboard, near the steering column. On vans (Astro, Safari) and S-series trucks/SUVs, it’s often behind the center dash panel.
- âś” Remove the Old Module: Carefully unplug the wiring harness connectors. They have locking tabs that need to be depressed. Once unplugged, unbolt or unclip the old BCM from its mounting bracket.
- âś” Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely plug in all the wiring harnesses. You’ll hear a ‘click’ when they are properly seated.
- âś” Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and test all body functions—windows, locks, lights, wipers, and horn. Start the vehicle to ensure the security system has synced.
Important Post-Installation Note: In some cases, additional vehicle-specific relearn procedures may be necessary. For instance, if the airbag light appears, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. A Brake Pedal Position relearn might also be required on certain models to ensure proper brake light and traction control operation. These are standard procedures when replacing a BCM.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following makes and models:
- Chevrolet Avalanche 1500: 2002 (4×2)
- Chevrolet Astro Van: 2002-2005
- Chevrolet Blazer S10: 2002-2005
- Chevrolet S10 Pickup: 2002-2004
- Chevrolet Silverado 1500/2500/3500 Pickup: 2002
- Chevrolet Suburban 1500/2500: 2002 (4×2 for 1500)
- Chevrolet Tahoe: 2002 (4×2)
- Cadillac Escalade: 2002 (4×2)
- GMC Jimmy S15: 2002-2005
- GMC Safari Van: 2002-2005
- GMC Sierra 1500/2500/3500 Pickup: 2002
- GMC Sierra Denali: 2002
- GMC Sonoma S15 Pickup: 2002-2004
- GMC Yukon & Yukon XL 1500/2500: 2002
Plus, there is no core charge. You don’t need to worry about the cost or hassle of sending your old, faulty part back to us.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready to install with the latest GM software for your specific vehicle.
Where is the BCM located on my 2002 Silverado?
On the 2002 Silverado and other full-size GM trucks of that era, the Body Control Module is typically found under the driver’s side dashboard, attached to a bracket near the steering column.
What does ‘No Core Charge’ mean?
It means you are not required to send your old, faulty BCM back to us. This saves you the time, shipping costs, and the hassle of dealing with a core deposit. You can keep or dispose of your original part.
What if my airbag light comes on after installation?
This is an occasional possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A mechanic with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Will this fix my ‘Security’ light issue?
Yes, in most cases. A failing BCM is one of the most common causes of a persistent security light and the resulting no-start condition in these GM vehicles. This pre-programmed module is designed to resolve that communication failure.