Are you chasing electrical gremlins in your 2002 GM truck or SUV? One minute the power windows work, the next they don’t. The security light is flashing, and maybe your truck won’t even start. As a technician with over two decades of experience, I’ve seen these exact issues hundreds of times. The culprit is almost always a failing Body Control Module (BCM), the central command center for your vehicle’s body electronics.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We are offering a genuine replacement BCM, part number 15095335, that comes fully programmed to your vehicle’s specific VIN. This means you can skip the expensive trip to the dealership for programming. Simply provide us with your VIN after purchase, and we’ll handle the software flashing with the latest GM updates before it even leaves our facility. This ensures perfect integration and functionality right out of the box for your 2002 Tahoe BCM and other compatible models.
Common Signs of a Failing BCM
- ✔️ Erratic or non-functional power windows, door locks, and interior lights.
- ✔️ The security or anti-theft light stays on, preventing the engine from starting.
- ✔️ Dashboard warning lights (like ABS or Airbag) illuminate for no reason.
- ✔️ Wipers or radio behave unpredictably.
- ✔️ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or various B-series codes.
- ✔️ Inconsistent operation of the keyless entry remote.
From the Diagnostic Bay: A Common Culprit
I remember a 2002 Suburban that came into the shop with a textbook case of BCM failure. The owner was frustrated because the radio would turn on and off by itself, and the driver’s side power window had a mind of its own. After checking the basics, I went straight for the BCM under the steering column. Sure enough, I found faint water track marks on the casing. A common issue on these GMT800 platforms is a small leak from the windshield seal, allowing water to drip directly onto the BCM, shorting out its sensitive circuits over time. Replacing the faulty module with a pre-programmed unit like this one and fixing the seal had the truck’s electronics working perfectly in under an hour.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the BCM: On most of these models, the BCM is located under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- ✔ 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 old module from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors.
- ✔ Reconnect Power: Re-attach the negative battery terminal. Turn the key to the ‘On’ position and test all body functions like windows, locks, lights, and wipers.
Important Post-Installation Steps
While this 2002 Tahoe BCM is delivered ready for installation, some vehicles may require additional synchronization procedures:
- Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor relearn may be required to ensure correct brake light operation and traction control functionality. This can often be done with a high-end diagnostic tool.
Disclaimer: Procedures can vary. Always consult a factory service manual or a qualified technician for vehicle-specific guidance.
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 15063577, 15081857, 19208544, 15095335, DKAJ, and DPNW. It is guaranteed to fit the following 2002 models:
- 2002 Chevrolet Tahoe (4×4)
- 2002 Chevrolet Suburban 1500 (4×4)
- 2002 Chevrolet Avalanche 1500 (4×4)
- 2002 GMC Yukon (4×4)
- 2002 GMC Yukon XL 1500 (4×4)
- 2002 Cadillac Escalade (4×4)
- 2002 Cadillac Escalade EXT
Plus, with our no core charge policy, you can keep your original module without the hassle of sending it back.
Frequently Asked Questions
Do I need to take my truck to the dealer after installing this?
No! This BCM is pre-programmed to your vehicle’s VIN before we ship it. This saves you the time and expense of a dealership visit for programming. Some minor relearn procedures may be necessary post-installation, as noted above.
What is a core charge?
A core charge is a deposit you pay until you return your old part. We don’t have one! You can keep your old BCM, making the process simpler and more convenient for you.
How do I provide my VIN?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. We cannot program and ship your module without it.
Will this fix my ‘Service 4WD’ light?
While a failing BCM can cause a variety of electrical issues, the ‘Service 4WD’ message is often related to the Transfer Case Control Module (TCCM) or the encoder motor. A proper diagnosis is recommended to pinpoint the exact cause.
Is this a difficult part for a DIYer to replace?
The physical replacement is straightforward for someone with basic mechanical skills. It’s typically located under the dash and involves removing a trim panel and a few connectors. Our pre-programming service handles the most complex part of the job for you.