Are you chasing down frustrating electrical gremlins in your 2002 GM truck? Intermittent power windows, flickering lights, or a security system that has a mind of its own are classic signs of a failing Body Control Module (BCM). As the central command center for your truck’s body electronics, when the BCM starts to go, it can create a cascade of confusing and unpredictable problems. This isn’t just an annoyance—it can affect vehicle security and function. Stop throwing parts at the problem and get the definitive solution with our pre-programmed BCM.
This is a direct-fit replacement Body Control Module for your 2002 Chevrolet Avalanche 1500 and other compatible GM models. The best part? We handle the programming for you. Simply provide your vehicle’s VIN during checkout, and our technicians will flash the module with the latest, most stable software from GM. This means it arrives at your door ready for installation, saving you a costly trip to the dealership and hours of diagnostic headaches. Restore reliable function to your truck’s essential features with a part you can trust.
Is Your Truck Showing These Symptoms?
- ✔ Erratic power window or door lock operation.
- ✔ Interior or exterior lights not working correctly or staying on.
- ✔ The security or anti-theft system preventing the truck from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Dashboard warning lights related to security or electrical systems.
- ✔ Diagnostic trouble codes (DTCs) like B1000, B1001, or various U-codes (U0140, U0155) indicating a loss of communication.
From the Diagnostic Bay
I remember a 2002 Yukon XL that came into my shop with a laundry list of complaints from the owner. The radio would shut off, the dome lights would flicker while driving, and sometimes the power locks wouldn’t respond. The owner had already replaced the battery and checked all the fuses. On the surface, it looked like multiple unrelated problems. However, after connecting my scan tool, I noticed several communication loss codes pointing to the BCM. These modules are the traffic cops for all the body electronics. In my 20+ years, I’ve seen hundreds of these GMT800 platform trucks where a failing 2002 Avalanche 1500 BCM was the single root cause for a dozen ‘ghost’ issues. Replacing it with a properly programmed unit solved everything instantly.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most of these GM trucks and SUVs, the BCM is located under the driver’s side of the dashboard, usually 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, remove any bolts or clips holding the module in place and take it out.
- ✔ Install the New Module: Position your new, pre-programmed BCM and secure it in place. Firmly reconnect all the electrical connectors, making sure they click and lock securely.
- ✔ Power Up: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position (without starting the engine) and test your electronics—windows, locks, lights, etc.
Important Post-Installation Information
While this module is programmed for a straightforward installation, some vehicles may require additional steps to sync with other onboard systems:
- Airbag System Sync: If the airbag warning light is illuminated 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. This is only necessary if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be required to ensure your brake lights and traction control system function as intended.
Disclaimer: Specific procedures can vary. We always recommend consulting a factory service manual or a qualified technician for guidance.
Verified Fitment For These GM Models
This module is a confirmed fit for the following vehicles with the specified options. It replaces service numbers 15063577, 15081857, 19208544, 15095335, DKAJ, and DPNW.
ESCALADE 02 Body Control (BCM); (under steering column), 4×4
YUKON XL 1500 02 Body Control (BCM); (under steering column), 4×4
TAHOE 02 Body Control (BCM); (under steering column), 4×4
ESCALADE EXT 02 Body Control (BCM); (under steering column)
AVALANCHE 1500 02 Body Control (BCM); (under steering column), 4×4
SUBURBAN 1500 02 Body Control (BCM); (under steering column), 4×4
Frequently Asked Questions
Do I have to send my old BCM back?
Do I have to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
Why do you need my VIN?
Do I have to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
Is this a difficult part to install myself?
Do I have to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.
What if my airbag light comes on after I install it?
Do I have to send my old BCM back?
No. There is no core charge for this part. You can keep your original module.