Restore Control and Eliminate Electrical Gremlins in Your GM Vehicle
Are you chasing frustrating electrical issues in your 2002 GMC Yukon or a similar GM truck/SUV? Flickering lights, malfunctioning power windows, a security system that has a mind of its own, or an intermittent no-start condition can all point to one culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can create a cascade of unpredictable problems. This isn’t just an annoyance; it’s a reliability issue. Stop throwing parts at the problem and get the definitive solution.
This Body Control Module is a direct-fit replacement, but with a crucial advantage. We professionally program it to your vehicle’s specific VIN before it ships. This means you receive a module loaded with the latest GM software updates, tailored specifically for your truck or SUV. You get to skip the expensive trip to the dealership for programming, saving you time and hundreds of dollars in labor and tool fees. It’s the most efficient way to get your vehicle back to factory-spec performance.
From the Diagnostic Bay
A customer’s 2002 Sierra 1500 came in last week with a classic case of BCM failure. The radio would turn on by itself, the driver’s side power window worked only when it wanted to, and the battery would be dead every few mornings. The owner had already replaced the battery and the alternator. After a quick scan, we saw multiple communication codes pointing to the BCM. Instead of a lengthy and costly dealer visit, we installed one of our pre-programmed modules. The entire job took less than an hour in the bay, and all the bizarre electrical issues were gone instantly. This is the exact fix for that kind of frustrating, hard-to-diagnose problem.
Is Your GM Truck or SUV Showing These Symptoms?
- ✔ Erratic or non-working power windows, door locks, or interior lights.
- ✔ The security or anti-theft system preventing the vehicle from starting.
- ✔ Horn honking randomly or not working at all.
- ✔ Dashboard warning lights that stay on without a clear cause.
- ✔ Wipers or radio turning on and off unexpectedly.
- ✔ Communication error codes with other modules (DTCs starting with ‘U’).
A Straightforward Guide to Your BCM Installation
Replacing the BCM is a manageable job for a DIY enthusiast. While the exact location varies slightly by model (see fitment list), the process is generally the same.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most trucks and SUVs like the Yukon or Silverado, the BCM is located under the driver’s side of the dashboard, near the steering column. On vans like the Astro or Safari, it’s often behind the center dash panel.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical harnesses. You should hear a ‘click’ as they lock into place.
- Reconnect Battery & Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: windows, locks, lights, wipers, etc.
Important Post-Installation Procedures
After installing your new BCM, a couple of final steps are required to ensure full system integration and safety. These procedures typically require a bi-directional scan tool.
- Airbag System Reset: To clear the airbag warning light, you must perform the ‘Setup SDM Primary Key in BCM’ procedure. This re-establishes communication between the BCM and the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Sensor Relearn: Some vehicles may require a brake pedal position sensor recalibration. This ensures the brake lights and stability control systems function correctly with the new BCM.
If you are not equipped to perform these steps, a local professional mechanic can complete them for you.
Verified Vehicle Compatibility List
This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, DPNU and fits the following vehicles:
- 2002 GMC Yukon (4×2, under steering column)
- 2002 GMC Yukon XL 1500/2500 (4×2 on 1500, under steering column)
- 2002 GMC Sierra 1500/2500/3500/Denali (under steering column)
- 2002-2005 GMC Safari (center dash)
- 2002 Chevrolet Tahoe (4×2, under steering column)
- 2002 Chevrolet Suburban 1500/2500 (4×2 on 1500, under steering column)
- 2002 Chevrolet Silverado 1500/2500/3500 (under steering column)
- 2002 Chevrolet Avalanche 1500 (4×2, under steering column)
- 2002-2005 Chevrolet Astro (center dash)
- 2002-2005 Chevrolet Blazer S10 / GMC Jimmy S15 (center dash)
- 2002-2004 Chevrolet S10 / GMC Sonoma (center dash)
- 2002 Cadillac Escalade (4×2, under steering column)
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, providing your 17-digit Vehicle Identification Number (VIN) is mandatory. We use your VIN to load the exact, correct software and calibrations from GM for your vehicle’s specific options. This ensures a perfect match and proper function without a trip to the dealer.
Is this a simple plug-and-play installation?
For the most part, yes. The physical installation is plug-and-play. Because we program it beforehand, you avoid the most complex step. However, as noted, you will likely need to perform a couple of system relearn procedures (Airbag and Brake Pedal) with a scan tool to finalize the installation and clear any related warning lights.
Will this fix my ‘Service 4WD’ light?
While a BCM can cause a variety of issues, a ‘Service 4WD’ message is more commonly related to the Transfer Case Control Module (TCCM), the encoder motor, or the dash switch. It’s best to have the codes scanned to pinpoint the exact cause before ordering a BCM for that specific issue.
What happens if I don’t do the airbag or brake relearn procedures?
If you don’t perform the ‘Setup SDM Primary Key’ procedure, the airbag warning light on your dash will remain illuminated, and the supplemental restraint system may not function correctly. Failing to recalibrate the brake pedal position sensor could lead to improper brake light operation or issues with the vehicle’s stability control system.
How do I find the part number on my old BCM?
The part number is typically printed on a sticker on the module’s housing. You will need to remove the module to view it. However, as long as your vehicle is on our compatibility list, this module will work, as we program it based on your VIN, not your old part number.