Restore Your Truck’s Brain and Banish Electrical Problems
Are you chasing electrical gremlins in your GM truck or SUV? Flickering lights, malfunctioning power windows or door locks, a security light that won’t turn off, or even a 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, when the BCM falters, it can cause a cascade of frustrating and unpredictable issues. This isn’t just an annoyance; it can affect vehicle security and safety. This replacement BCM is your reliable, straightforward solution to restore full functionality to your vehicle.
We take the guesswork and high costs out of the repair. Unlike a trip to the dealership, which involves expensive hardware and separate programming fees, this module arrives at your door ready to install. Simply provide your vehicle’s VIN during checkout, and our technicians will program the BCM with the latest GM-certified software specific to your 2002 Yukon or other compatible model. This ensures seamless communication between all your vehicle’s systems, just like the original. With no core charge, you can keep your old part without the hassle of shipping it back.
A Technician’s Notebook: The Case of the Haunted Silverado
I had a 2002 Silverado 2500 in the bay last month with a list of symptoms that sounded like a ghost story. The dome light would stay on, the radio presets would reset overnight, and the power locks worked intermittently. The owner had already replaced the battery and checked all the fuses. A scan showed a U0140 code—Lost Communication With Body Control Module. These early 2000s GM BCMs are notorious for internal solder joint failures and capacitor degradation. After swapping in a pre-programmed BCM like this one, every single issue vanished. It’s a 30-minute fix that saves hours of diagnostic headaches.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, it’s a strong indicator that your Body Control Module needs attention. Replacing your faulty 2002 Yukon BCM can resolve these common issues:
- ✔ Erratic or non-functional interior/exterior lights.
- ✔ Power windows, mirrors, or door locks operating incorrectly or not at all.
- ✔ The anti-theft or security light stays illuminated, preventing the engine from starting.
- ✔ The radio or instrument cluster behaves erratically.
- ✔ False warnings on the driver information center (e.g., “Door Ajar”).
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or U0164.
- ✔ Inconsistent A/C and heater blower fan operation.
A Straightforward Guide to Installation
Installing your new BCM is a manageable job for a confident DIYer. While the exact location varies slightly, it’s typically found under the steering column or behind the center dash panel.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow capacitors to discharge.
- Locate the BCM: On most full-size trucks like the 2002 Yukon, Tahoe, or Silverado, the BCM is located under the driver’s side of the dashboard, often attached to a metal bracket near the steering column. For vans like the Astro/Safari, it’s usually behind the center dash trim.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. These are typically held by clips or a few screws.
- Disconnect and Remove: 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 the same location and reconnect all electrical connectors. Ensure they click securely into place.
- Final Steps: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Start the vehicle and test all functions—lights, locks, windows, radio, etc.
Important Post-Installation Notes
While this BCM is programmed for your VIN, some vehicle systems may require a ‘handshake’ with the new module. This is normal. Specifically, be aware of the ‘Airbag System Sync’ and ‘Brake Pedal Position Relearn’ procedures noted in our technical details. If an airbag light appears, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. Always refer to a factory service manual or consult a professional if you are unsure about any step.
Will This Fit My Truck or SUV?
This Body Control Module is a direct-fit replacement for a wide range of General Motors vehicles. Please verify your part number or match your vehicle from the list below. This unit replaces part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU.
- 2002 Cadillac Escalade (4×2)
- 2002 Chevrolet Avalanche 1500 (4×2)
- 2002-2005 Chevrolet Blazer S10
- 2002-2005 Chevrolet Astro Van
- 2002-2004 Chevrolet S10 Pickup
- 2002 Chevrolet Silverado 1500, 2500, 3500
- 2002 Chevrolet Suburban 1500 (4×2), 2500
- 2002 Chevrolet Tahoe (4×2)
- 2002-2005 GMC Jimmy S15
- 2002-2005 GMC Safari Van
- 2002 GMC Sierra 1500, 2500, 3500, Denali
- 2002-2004 GMC Sonoma
- 2002 GMC Yukon (4×2)
- 2002 GMC Yukon XL 1500 (4×2), 2500
Frequently Asked Questions
Do I need to program this BCM?
No. We handle the programming for you before shipment. Just provide your VIN when you order, and it will arrive ready to install with the latest GM software for your vehicle.
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer that manages many of your vehicle’s non-engine-related functions, such as power windows, locks, lights, security system, wipers, and instrument panel gauges.
Is this a difficult part to replace myself?
For someone with basic mechanical skills and tools, this is a very manageable repair. The main challenge is accessing the module, which is usually under the dashboard. Our installation guide provides the key steps.
Why is my security light on after installing the BCM?
The BCM is a key part of the vehicle’s anti-theft system (Passlock/Passkey). While our programming handles this, some vehicles may require a simple security relearn procedure, which can typically be done without special tools. However, if the light persists, consult a service manual or technician.
Do I have to send my old BCM back?
No. We do not require a core return for this part. You can keep your original module, saving you the time and expense of a core charge and return shipping.
Will this fix my check engine light?
Generally, no. The BCM controls body functions, while the Engine Control Module (ECM) or Powertrain Control Module (PCM) manages the engine and triggers the check engine light. However, communication issues between modules can sometimes cause unusual warnings.