Tired of Electrical Gremlins in Your GM Truck?
Are your power windows acting possessed? Do your interior lights flicker or refuse to turn off? Maybe your security system is throwing a fit, or the truck intermittently refuses to start. If you’re nodding your head, you’ve likely met the frustrating symptoms of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can turn your reliable truck into a source of daily headaches. In my 20+ years of diagnostics, I’ve seen these modules cause some of the most confusing issues, often misdiagnosed as bad switches or wiring problems.
This isn’t just another part. This is a direct-fit, plug-and-play solution. We take the guesswork and dealership expense out of the equation. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) after purchase, and our technicians will program this BCM with the latest GM software specifically for your truck. It arrives at your door ready to install, saving you from costly programming fees and the need for specialized scan tools.
Case Study: A Tricky Diagnosis
A customer brought in his ’02 Sierra 2500 last month with a laundry list of bizarre electrical problems. The radio would shut off randomly, the dome light stayed on, and the driver’s power window only worked when it wanted to. He had already replaced the window switch and checked fuses, but the problems persisted. After hooking up the scan tool, I noticed communication errors between several modules. Instead of chasing individual symptoms, we focused on the central hub: the BCM. A quick voltage drop test on the BCM’s power and ground circuits confirmed our suspicion—the module was failing internally. We installed a VIN-programmed BCM just like this one, and in under an hour, every single one of his electrical issues was gone. It’s a classic example of how a single component can cause a cascade of seemingly unrelated problems.
Is Your GM Truck or SUV Showing These Signs?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system light is on, or the alarm randomly triggers.
- ✔ Intermittent no-start conditions or issues with key fob recognition.
- ✔ Warning messages on the dash like ‘Service 4WD’ or other system alerts.
- ✔ Unresponsive radio or climate control functions.
Your Straightforward Installation Guide
Replacing your 2002 Yukon BCM is a manageable job for a confident DIYer. While the exact location varies slightly by model, the process is generally similar.
- 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, Tahoe, and Silverado, the BCM is located under the driver’s side of the dashboard, near the steering column. On vans like the Astro and Safari, it’s often behind the center dash area.
- Remove Trim Panels: You may need to remove a lower dash panel or knee bolster to gain access. These are typically held in by a few screws or clips.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in place and securely reconnect all electrical harnesses. Ensure they click into place.
- Reconnect Battery & Test: Reinstall any trim panels and reconnect the negative battery terminal. Start the vehicle and test all functions: windows, locks, lights, radio, etc.
- Critical Post-Install Procedures: After installation, two final steps are often required. Use a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear any airbag lights. Some vehicles may also need a brake pedal position sensor recalibration to ensure proper brake light and ABS function. If you are unsure, consult a professional technician.
Verified Fitment For These GM Models
This BCM is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following vehicles:
- Cadillac Escalade: 2002 (4×2)
- Chevrolet Avalanche 1500: 2002 (4×2)
- Chevrolet Blazer S10 / GMC Jimmy S15: 2002-2005
- Chevrolet S10 / GMC Sonoma: 2002-2004
- Chevrolet Silverado & GMC Sierra 1500/2500/3500/Denali: 2002
- Chevrolet Suburban & GMC Yukon XL 1500/2500: 2002
- Chevrolet Tahoe & GMC Yukon: 2002 (4×2)
- Chevrolet Astro & GMC Safari Van: 2002-2005
Note: Please verify your original part number or consult the fitment list carefully. Location is either under the steering column or in the center dash depending on the model.
Frequently Asked Questions
Is this BCM truly plug-and-play?
Yes! Because we program it to your vehicle’s specific VIN before shipping, it eliminates the need for you to perform any programming. However, as noted, post-installation procedures like an airbag system reset or brake pedal recalibration may be necessary using a scan tool.
Where do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
Do I need to send my old BCM back (core charge)?
No, there is no core charge or need to return your original module. This is a direct purchase.
What if my part number is slightly different?
This module replaces several part numbers, including 15063578, 15081796, 15095334, and others listed. As long as your vehicle is on the compatibility list and your original part is a BCM, this unit will function correctly.
Will this fix my ‘Service 4WD’ light?
In many cases, yes. The BCM communicates with the transfer case control module (TCCM). A failing BCM can interrupt this communication, causing a false ‘Service 4WD’ message. Replacing a faulty 2002 Yukon BCM often resolves this issue.