Restore Full Electrical Function to Your GM Truck or SUV
If you’re dealing with a frustrating array of electrical problems in your 2002 GM truck—like power windows that won’t roll down, door locks with a mind of their own, or a security light that won’t turn off—you’ve likely met the culprit: a failing Body Control Module (BCM). As the central computer for your vehicle’s body electronics, a faulty BCM can cause chaos. This isn’t just an annoyance; it affects your vehicle’s daily usability and security. This replacement Body Control Module, part number 15081857, is the definitive solution to get your truck back to 100%.
The biggest hurdle with BCM replacement has always been the expensive and time-consuming programming required at a dealership. We eliminate that step entirely. When you order from us, you simply provide your vehicle’s VIN. Our technicians will then program the module with the latest official GM software specific to your truck before it even leaves our facility. This means it arrives at your door ready for installation, saving you hundreds in dealer fees and diagnostic time. This is the most direct path to fixing those persistent electrical gremlins for good.
From the Diagnostic Bay
I remember a customer with a 2002 Tahoe who was ready to sell the truck. His power locks worked intermittently, the radio would sometimes stay on after he removed the key, and the security light would flash randomly, preventing it from starting. He’d replaced the battery and checked fuses, but nothing worked. After a quick scan, I saw a dozen communication codes all pointing to one source. We installed a pre-programmed 2002 Suburban 1500 BCM (the same unit fits the Tahoe), and every single issue vanished instantly. It’s a perfect example of how one component can cause a cascade of seemingly unrelated problems.
Is Your SUV Exhibiting These Glitches?
A failing BCM doesn’t usually cause a single, clean failure. It creates a pattern of strange electrical behavior. Here are the most common symptoms I’ve seen in my 20+ years of diagnostics:
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior dome lights staying on or not turning on when a door is opened.
- ✔ The security or anti-theft light is illuminated on the dash, possibly causing a no-start condition.
- ✔ Inconsistent or non-functional radio and instrument cluster backlighting.
- ✔ False warnings on the driver information center (DIC).
- ✔ Common diagnostic trouble codes (DTCs) like U0140, U0155, or various B-series codes related to body electronics.
A Straightforward Guide to Installation
Installing your new 2002 Suburban 1500 BCM is a manageable job for a confident DIYer. The module is typically located under the driver’s side of the dashboard, near the steering column. While straightforward, always prioritize safety.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to discharge.
- Locate the BCM: Remove the lower dash panel beneath the steering column to access the module. It’s a black plastic box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all wiring harnesses 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. Securely plug in all the electrical connectors, ensuring each one clicks firmly into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position (without starting the engine) and test your electronics: power windows, locks, radio, and lights.
- Post-Installation Checks: In some cases, your vehicle may require a ‘Brake Pedal Position Relearn’ or an ‘Airbag System Sync’ if the airbag light is on. These procedures require a professional-grade scan tool to complete.
Verified to Fit These 2002 GM Models
This module is a direct-fit replacement for the original BCM on a range of popular GM vehicles. It is compatible with multiple service numbers, including 15063577, 15081857, 19208544, 15095335, DKAJ, and DPNW. Please verify your vehicle is on this list:
- ✔ 2002 Cadillac Escalade (4×4)
- ✔ 2002 Cadillac Escalade EXT
- ✔ 2002 Chevrolet Avalanche 1500 (4×4)
- ✔ 2002 Chevrolet Suburban 1500 (4×4)
- ✔ 2002 Chevrolet Tahoe (4×4)
- ✔ 2002 GMC Yukon (4×4)
- ✔ 2002 GMC Yukon XL 1500 (4×4)