Restore Full Functionality to Your GM Truck or SUV
Are you tired of dealing with baffling electrical problems in your 2002 GMC Yukon XL 2500 or similar GM vehicle? Issues like power windows that won’t budge, interior lights with a mind of their own, or a security light that prevents your truck from starting are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause widespread and frustrating disruptions. This isn’t just an inconvenience; it can affect your vehicle’s security and safety.
This is a direct-fit replacement Body Control Module, arriving at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We handle the complex part for you. By flashing the module with the latest official GM software updates before it ships, we eliminate the need for an expensive trip to the dealership for programming. You get a reliable part that’s ready for installation, designed to restore the functions you depend on every day.
Case Study: A Tricky Diagnosis
A customer brought in a 2002 Sierra 2500 with a persistent parasitic battery drain and flickering dome lights that stayed on long after the doors were closed. We checked all the usual suspects—alternator, battery, door jamb switches—with no luck. A deep dive with the scan tool showed intermittent communication loss with the BCM. After swapping in a pre-programmed module just like this one, the parasitic draw vanished and all interior electronics functioned perfectly. These early 2000s GM BCMs are notorious for internal solder joint failures, leading to exactly these kinds of hard-to-trace electrical gremlins. A quality replacement is the definitive fix.
Is Your GM Truck Showing These Symptoms?
A failing BCM is often the root cause of many strange electrical issues. If you’re experiencing any of the following, it’s highly likely your BCM needs replacement:
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ Interior or exterior lights not working correctly (e.g., staying on, not turning on, flickering).
- ✔ The security or anti-theft system light is illuminated, possibly causing a no-start condition.
- ✔ Inaccurate or non-functional gauges on the instrument cluster.
- ✔ Radio or climate control malfunctions.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, such as U-codes (e.g., U0140, U0155) or B-codes, stored in the system.
A Straightforward Guide to BCM Installation
For the confident DIYer, replacing the BCM is a manageable job. On most compatible trucks and SUVs like the Yukon, it’s located under the driver’s side dash, near the steering column. For vans like the Astro/Safari, it’s typically behind the center dash panel.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes before beginning work.
- Locate the Module: Find the old BCM. It’s a black plastic box with several large multi-pin electrical connectors. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that must be depressed to be released. Once disconnected, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to confirm proper operation.
Important Post-Installation Notes
While this module is programmed for a plug-and-play experience, some vehicles may require additional steps. If your airbag light is on after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. Similarly, a Brake Pedal Position relearn might be necessary on certain models to ensure correct brake light and traction control operation. Always consult a factory service manual for vehicle-specific details.
Will This Fit My Vehicle?
This BCM is a direct replacement for a wide range of 2002-2005 General Motors trucks, vans, and SUVs. Please verify your part number or vehicle application below. This module replaces part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU.
- Avalanche 1500 (2002): 4×2 models
- Astro / Safari Van (2002-2005)
- Blazer S10 / Jimmy S15 (2002-2005)
- Escalade (2002): 4×2 models
- S10 / S15 / Sonoma (2002-2004)
- Sierra & Silverado 1500, 2500, 3500 (2002)
- Sierra Denali (2002)
- Suburban 1500 & 2500 (2002)
- Tahoe (2002): 4×2 models
- Yukon & Yukon XL 1500, 2500 (2002)
Frequently Asked Questions
Why do you need my VIN?
Your VIN is essential for us to program the BCM with the exact software and calibrations for your vehicle’s specific options and features. This ensures all systems communicate correctly and function as they did from the factory, saving you a trip to the dealer.
Is this part difficult to install myself?
For most DIYers with basic tools, the physical installation is straightforward. The module is typically located under the steering column. The main benefit of our service is that the complex programming is already done for you.
What if my airbag light comes on after I install it?
In some cases, the new BCM needs to be synced with the airbag system (SDM). This is a simple procedure called ‘Setup SDM Primary Key in BCM’ that requires a professional-grade diagnostic scan tool to complete.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your original module.
Will this BCM fix my specific problem?
This module will correct issues directly caused by a failing BCM, such as problems with power accessories, lighting, and security systems. However, it’s crucial to properly diagnose the issue first, as similar symptoms can sometimes be caused by faulty wiring or other components.