Restore Full Functionality to Your GM Truck or Van
Are you dealing with frustrating electrical gremlins in your 2002 GMC Sierra 3500? Issues like power windows that won’t budge, door locks with a mind of their own, or a persistent security light on the dash are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of problems that are not only annoying but can also compromise your vehicle’s security and functionality. This replacement BCM is the definitive solution, arriving pre-programmed to your truck’s specific VIN for a straightforward installation.
From the Diagnostic Bay
I remember a 2002 Sierra 2500 that rolled into my shop last month. The owner was at his wit’s end. The radio would turn on and off, the dome light flickered randomly, and sometimes the truck wouldn’t start, just displaying the ‘Security’ light. He’d already replaced the battery and checked the grounds. After hooking up the scanner, I saw a handful of U-codes indicating lost communication with multiple modules. The common link? The BCM. A failing BCM can send garbled data across the vehicle’s network, causing chaos. We swapped in a VIN-programmed module just like this one, and it was like the truck was new again. All the phantom electrical issues vanished instantly. This isn’t just a part; it’s a permanent fix for a very complex problem.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely your BCM is the culprit. A replacement 2002 Sierra 3500 BCM is the most reliable way to solve these issues for good.
- ✔ Erratic or non-functional power windows, mirrors, and door locks.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The security or anti-theft light is illuminated, potentially causing a no-start condition.
- ✔ Inconsistent operation of the horn or windshield wipers.
- ✔ False warnings on the driver information center (e.g., ‘Door Ajar’).
- ✔ Diagnostic Trouble Codes (DTCs) such as U0140, B1001, or other communication errors.
Your Straightforward Installation Guide
One of the biggest benefits of our service is that we handle the programming. This turns a complex, dealer-only job into a manageable DIY task. For a 2002 Sierra 3500, the BCM is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes before beginning.
- Locate the BCM: On most GMT800 trucks, you’ll find the BCM mounted to a bracket under the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. Ensure they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: windows, locks, lights, etc.
- Perform Relearns (If Needed): As noted in our post-install procedures, you may need a scan tool for an airbag system sync or a brake pedal position relearn if specific warning lights appear.
Guaranteed Fitment for Your GM Vehicle
This Body Control Module is a direct replacement for several part numbers and fits a wide range of GM trucks and vans. Please verify your vehicle is on this list. We program the module specifically for the VIN you provide, ensuring perfect compatibility.
Compatible Part Numbers: 15063578, 15081796, 15095334, 19208537, DKAK, DPNU
This part will fit these makes and models with these options:
ASTRO 02-05 (center dash)
BLAZER S10/JIMMY S15 02-05 (center dash)
ESCALADE 02 (under steering column), 4×2
S10/S15/SONOMA 02-04 (center dash)
SAFARI (GMC) 02-05 (center dash)
SIERRA 1500 PICKUP 02 (under steering column)
SIERRA 2500 PICKUP 02 (under steering column)
SIERRA 3500 PICKUP 02 (under steering column)
SIERRA DENALI 02 (under steering column)
SILVERADO 1500 PICKUP 02 (under steering column)
SILVERADO 2500 PICKUP 02 (under steering column)
SILVERADO 3500 PICKUP 02 (under steering column)
SUBURBAN 1500 02 (under steering column), 4×2
SUBURBAN 2500 02 (under steering column)
TAHOE 02 (under steering column), 4×2
YUKON 02 (under steering column), 4×2
YUKON XL 1500 02 (under steering column), 4×2
YUKON XL 2500 02 (under steering column)
Frequently Asked Questions
Do I need to send you my VIN?
Yes, providing your Vehicle Identification Number (VIN) is mandatory. We use your VIN to program the BCM with the latest GM software specific to your vehicle’s options and configuration. This ensures it works correctly right out of the box.
What does “No Core Charge” mean?
It means you do not have to send your old, faulty BCM back to us. You can keep it, dispose of it, or recycle it locally. This saves you the time and expense of return shipping.
Will I need any special tools for installation?
For the physical installation, you’ll only need basic hand tools like a socket set and possibly a trim removal tool. However, in some cases, a post-installation procedure like an ‘Airbag System Sync’ may be required, which necessitates a professional-grade diagnostic scan tool.
What happens if my airbag light comes on after installation?
This is an infrequent but possible occurrence. It means the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A repair shop with a capable scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Is this a guaranteed fix for my vehicle’s electrical problems?
This module will fix any issues directly caused by a faulty BCM. If your vehicle exhibits the common symptoms we’ve listed, this part is the most likely solution. However, we always recommend proper diagnostics to rule out other potential causes like bad wiring or faulty grounds.