Restore Your GM Truck’s Electrical System with a Plug-and-Play Solution
Is your 2002 Suburban 1500 acting possessed? Flickering lights, power windows with a mind of their own, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s comfort and convenience features, a faulty BCM can cause a cascade of frustrating and unpredictable electrical problems. This module is the direct-fit, reliable solution to get your truck or SUV back to normal.
We take the guesswork and dealer-level expense out of the equation. Unlike a generic part from a local store, this BCM arrives at your door pre-programmed with the latest GM software, specifically matched to your vehicle’s VIN. This means you can skip the costly trip to the dealership for programming. It’s a straightforward fix designed for both seasoned mechanics and determined DIYers.
A Technician’s Notebook
I remember a 2002 Sierra 2500 that rolled into my bay with a laundry list of bizarre complaints. The owner said the radio would randomly shut off, the dome light would stay on, and sometimes the power locks wouldn’t respond. He’d already replaced the battery and checked fuses, but the gremlins persisted. A scan showed a handful of U-codes (communication errors), which immediately pointed me to the network’s hub: the BCM. After confirming power and ground were solid at the module, we knew it was failing internally. We installed a VIN-programmed BCM just like this one, and in under 30 minutes, every single one of his electrical issues was gone. It’s a common failure point on these GM platforms, and a pre-programmed module is the most efficient fix.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security or anti-theft light is illuminated, potentially causing a no-start condition.
- ✔ Gauges on the instrument cluster behaving erratically or not working.
- ✔ Radio or climate control systems malfunctioning.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ False warnings on the driver information center (DIC).
A Straightforward Guide to Your BCM Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning.
- ✔ Locate the BCM: On most compatible trucks and SUVs (like the Suburban, Tahoe, and Silverado), the BCM is located under the driver’s side of the dashboard, near the steering column. For vans (Astro, Safari) and S-series trucks, it’s often behind the center dash.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, unbolt or unclip the old BCM from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, radio, etc.—to confirm proper operation.
Important Post-Installation Notes: While this module is programmed for your vehicle, some systems may require a ‘handshake’ after installation. If your airbag light is on, a shop with a capable scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a Brake Pedal Position relearn may be needed on some models to ensure proper brake light and stability control function. No core charge is required; you can keep your old part.
Will This Fit My GM Vehicle?
This Body Control Module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following vehicles:
- Chevrolet Avalanche 1500: 2002 (4×2)
- Chevrolet Blazer S10: 2002-2005
- Chevrolet S10 Pickup: 2002-2004
- Chevrolet Silverado 1500/2500/3500 Pickup: 2002
- Chevrolet Suburban 1500/2500: 2002
- Chevrolet Tahoe: 2002 (4×2)
- Chevrolet Astro Van: 2002-2005
- GMC Jimmy S15: 2002-2005
- GMC Sonoma S15 Pickup: 2002-2004
- GMC Sierra 1500/2500/3500 Pickup & Denali: 2002
- GMC Yukon & Yukon XL 1500/2500: 2002
- GMC Safari Van: 2002-2005
- Cadillac Escalade: 2002 (4×2)
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We must have your VIN to program the module before shipping.
Is this part truly plug-and-play?
Yes, for the vast majority of functions. Because we program it to your VIN, it eliminates the need for dealer programming. However, as noted, certain subsystems like the airbag (SRS) may require a simple sync procedure with a scan tool if a warning light appears.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
What if my original part number isn’t 19208537?
This module is a direct replacement for several part numbers. As long as your original part number is 15063578, 15081796, 15095334, 19208537, DKAK, or DPNU, this part will work perfectly.
Will this fix my ‘Service 4WD’ message?
While the BCM communicates with many systems, a ‘Service 4WD’ message is more commonly caused by the Transfer Case Control Module (TCCM) or the encoder motor/sensor. It’s best to diagnose that issue separately before replacing the BCM for that specific fault.