Restore Control and End Electrical Frustration in Your GM Truck or SUV
Are you tired of chasing down bizarre electrical problems in your 2002 Chevrolet Tahoe or other GM vehicle? One minute the power windows work, the next they don’t. The security light flashes for no reason, or your interior lights have a mind of their own. These aren’t separate issues; they’re classic signs of a failing Body Control Module (BCM), the central command center for your vehicle’s body electronics. This replacement BCM, part number 15081796, is the reliable, long-term solution you’ve been looking for.
We take the guesswork and hassle out of the repair. Unlike a generic module from a parts store or salvage yard, this BCM arrives at your door pre-programmed to your vehicle’s specific VIN. This means no expensive trips to the dealership for programming. We install the latest GM software updates, ensuring optimal performance and compatibility right out of the box. Simply provide your VIN during checkout, and we handle the rest.
From the Diagnostic Bay
I remember a 2002 Silverado that came into my shop with a laundry list of complaints from the owner. The radio would turn off randomly, the driver’s side power lock was dead, and the dome light would flicker while driving. He had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw multiple communication loss codes (U-codes) pointing to the BCM. These modules, especially from this era, are prone to internal solder joint failures from heat cycles and vibration. We installed a VIN-programmed BCM, and instantly, all the gremlins were gone. It’s a common failure, and a new, properly programmed module is the definitive fix.
Common Signs of a Failing BCM
- âś” Intermittent or non-functional power windows, door locks, or mirrors.
- âś” Erratic instrument cluster behavior, with gauges dropping out or warning lights appearing randomly.
- âś” Malfunctioning interior or exterior lighting (e.g., dome lights staying on, headlights not working).
- âś” Security system issues, including a flashing security light or a no-start condition due to Passlock failure.
- âś” Unresponsive key fob or remote entry system.
- âś” Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or U0164.
A Straightforward Guide to BCM Installation
Replacing the 2002 Tahoe BCM is a manageable job for a DIY enthusiast. While the location varies slightly by model (under the steering column for trucks/SUVs, center dash for vans), the process is similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- Locate the BCM: On most trucks and SUVs like the Tahoe, Yukon, and Silverado, the BCM is located under the driver’s side of the dashboard, often attached to a metal bracket near the steering column. For vans like the Astro and Safari, it’s typically behind the center dash trim.
- Remove Trim Panels: Carefully remove any plastic trim panels necessary to access the module. These are usually held by clips or a few screws.
- Disconnect and Remove: The BCM has several large multi-pin electrical connectors. Depress the locking tabs on each connector and gently pull them straight out. Then, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Seat the new BCM onto the mounting bracket and secure it. Carefully plug in each electrical connector, making sure they click firmly into place. The connectors are color-coded and keyed to prevent mix-ups.
- Final Steps: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Start the vehicle to confirm the repair.
Important Post-Installation Information
Because this 2002 Tahoe BCM is pre-programmed, most functions will work immediately. However, depending on your specific vehicle, a couple of quick sync procedures may be needed:
- 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 module.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be required to ensure correct brake light and traction control operation. This can also be done with a capable scan tool.
Disclaimer: Always refer to a factory service manual for procedures specific to your vehicle’s year and model.
Will This Fit My Vehicle?
This module is a direct replacement for part numbers 15081796, 15063578, 15095334, 19208537, DKAK, and DPNU. It is confirmed to fit the following GM vehicles:
- Cadillac Escalade (2002) (4×2)
- Chevrolet Avalanche 1500 (2002) (4×2)
- Chevrolet Blazer S10 (2002-2005)
- Chevrolet S10 Pickup (2002-2004)
- Chevrolet Silverado 1500, 2500, 3500 (2002)
- Chevrolet Suburban 1500, 2500 (2002) (4×2 for 1500)
- Chevrolet Tahoe (2002) (4×2)
- Chevrolet Astro Van (2002-2005)
- GMC Jimmy S15 (2002-2005)
- GMC Sonoma S15 (2002-2004)
- GMC Sierra 1500, 2500, 3500, Denali (2002)
- GMC Yukon & Yukon XL 1500, 2500 (2002) (4×2 for Yukon/XL 1500)
- GMC Safari Van (2002-2005)
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means we load your vehicle’s specific software and security information onto the BCM before shipping it. This allows for a direct installation without needing expensive programming tools or a trip to a dealership, saving you time and money.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
Is this something I can install myself?
Absolutely. For someone with basic hand tools and a little patience, this is a very manageable DIY job. The main challenge is simply accessing the module under the dashboard.
Why is my airbag light on after installing the new BCM?
This is normal for some vehicles. The new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key’ procedure in a few minutes to turn the light off.
How do I find the part number on my original BCM?
Your original BCM will have a white sticker on it with a series of numbers. The main GM part number is typically a bold, 8-digit number. This module replaces several common part numbers, including 15081796.