Restore Full Functionality to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your 2002 Chevrolet Avalanche 1500? Issues like intermittent power windows, door locks with a mind of their own, erratic interior lights, or a security system that randomly prevents your truck from starting are classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of confusing and unpredictable problems. This isn’t just an inconvenience; a faulty BCM can leave you stranded.
This is your reliable, straightforward solution. We offer a replacement Body Control Module, programmed specifically to your vehicle’s VIN with the latest GM software updates. This critical programming step ensures that the new module communicates seamlessly with your truck’s other systems, like the powertrain control module and anti-lock brake system. By providing your VIN at checkout, you get a component that is ready for installation right out of the box, saving you a costly trip to the dealership for programming.
A Technician’s Notebook
I remember a 2002 Sierra 2500 that came into my bay with the most bizarre symptoms. The owner said sometimes it would start, sometimes it wouldn’t. The radio would turn on by itself, and the dome light would flicker while driving. He’d already replaced the battery and alternator. After checking the basics, we hooked up the scan tool and found a slew of ‘U’ codes—communication errors between modules. This pointed directly to the network’s traffic controller: the BCM. A failing BCM can’t properly direct signals, leading to exactly this kind of chaos. We installed a VIN-programmed BCM, and it was like flipping a switch. All the gremlins vanished. This is a common failure on this GM platform, and a correctly programmed module is the definitive fix.
Is Your Truck Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ The security or anti-theft light is on, and the vehicle won’t start (a common Passlock issue).
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The radio or instrument cluster behaves erratically.
- ✔ False warnings on the driver information center (e.g., “Door Ajar”).
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U1000, U1016, or other U-codes.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait about 10 minutes before starting work.
- ✔ Locate the BCM: On most compatible trucks and SUVs like the 2002 Avalanche, 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 module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. Ensure they click into place.
- ✔ Reconnect Battery: Reattach the negative battery terminal.
- ✔ Post-Installation Checks: Turn the key to the ‘ON’ position and verify that your power accessories (windows, locks, lights) are functioning correctly. Please review the important post-installation procedures below.
Important Notes After Installation
While this module is pre-programmed for your vehicle, some systems may require a ‘handshake’ with the new BCM. This is normal. Specifically:
- Airbag System Sync: If your 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.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function as intended.
We believe in transparency and empowering our customers. That’s why we offer this module with no core charge. You can keep your original part without the hassle of shipping it back.
Verified Vehicle Compatibility
This BCM is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following GM models and years:
BLAZER S10/JIMMY S15 02-05 (center dash)
ESCALADE 02 (under steering column), 4×2
S10/S15/SONOMA 02-04 (center dash)
SIERRA 1500/2500/3500 PICKUP 02 (under steering column)
SIERRA DENALI 02 (under steering column)
SILVERADO 1500/2500/3500 PICKUP 02 (under steering column)
SUBURBAN 1500/2500 02 (under steering column)
TAHOE 02 (under steering column), 4×2
YUKON 02 (under steering column), 4×2
YUKON XL 1500/2500 02 (under steering column)
ASTRO 02-05 (center dash)
SAFARI (GMC) 02-05 (center dash)
Note: Please match your part number or contact us with your VIN to confirm compatibility.
Frequently Asked Questions
What exactly does a BCM do?
The Body Control Module (BCM) acts as a central computer for your vehicle’s non-engine related functions. It controls the power windows, door locks, interior and exterior lighting, security system, wipers, and instrument cluster functions.
Is this part truly plug-and-play?
Because we program it to your specific VIN before shipping, it is as close to plug-and-play as possible. It will operate the main functions immediately. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal sensor, which may require a professional scan tool.
What do you need from me after I order?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot program and ship your module without it. This ensures a perfect match for your truck’s specific options.
Do I have to send my old BCM back?
No. This BCM is sold with no core charge. You can keep your original module, which saves you the time and expense of a return shipment.
What tools will I need for the installation?
For most of these GM trucks, basic hand tools are all that’s required. Typically a socket set (7mm and 10mm are common), a screwdriver, and possibly a trim removal tool to safely pry off the lower dash panel without scratching it.