Tired of Chasing Electrical Gremlins in Your GM Truck?
As a technician with over two decades of experience under the hood, I’ve seen it all. A customer comes in with a 2002 Silverado, and the story is always the same: the radio cuts out, power windows have a mind of their own, the security light flashes for no reason, or worse, it’s an intermittent no-start that leaves them stranded. These frustrating, ghost-in-the-machine issues almost always point to one culprit: a failing Body Control Module (BCM). This isn’t just a box of wires; it’s the central nervous system for your vehicle’s comfort and convenience features. When it fails, your reliable truck becomes a source of daily annoyance.
This isn’t just a replacement part; it’s a permanent fix. We offer a reliable, professionally prepared Body Control Module that directly replaces part number 15081796 and several others. The best part? We handle the most difficult step for you. Simply provide your vehicle’s VIN during checkout, and we will program the module with the latest GM software updates specifically for your truck. This means no expensive trip to the dealership for programming. It arrives at your door ready to be installed, saving you significant time and money. With this programmed 2002 Silverado BCM, you can restore your truck’s functionality and your peace of mind.
Real-World Repair Story
Real-World Repair Story
I remember a 2002 Sierra 2500 that came into my shop. The owner was at his wit’s end. His interior lights would flicker randomly, and the horn would occasionally blurt out when he used the turn signal. He’d already replaced the battery and checked all the grounds. After hooking up my scan tool, I saw a slew of communication errors (U-codes) pointing to the BCM. A visual inspection of the original BCM revealed faint signs of water intrusion near the connector—a common failure point on these trucks. We installed one of our pre-programmed modules, and in under an hour, every single one of his electrical headaches was gone. It’s a satisfying fix that takes a vehicle from frustrating to fully functional.
Is Your Truck Showing These BCM Failure Signs?
A failing BCM can cause a wide range of confusing symptoms. If you’re experiencing any of the following, there’s a strong chance your BCM is the root cause. A faulty 2002 Silverado BCM can be the source of many electrical issues.
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from the radio or instrument cluster gauges.
- ✔ Interior dome lights staying on or not turning on at all.
- ✔ The security or anti-theft system light is illuminated, preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Diagnostic trouble codes (DTCs) related to component communication, such as U0140, U0155, or other U-series codes.
- ✔ Inconsistent operation of heating and A/C blower motor controls.
Your Straightforward BCM Installation Guide
For the confident DIYer, replacing the BCM is a manageable job. On most full-size trucks and SUVs, it’s located under the driver’s side of the dashboard. This guide provides a general overview.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait about 10 minutes to allow all systems to power down completely.
- Locate the BCM: On most 2002 Silverado, Sierra, Tahoe, and Suburban models, the BCM is mounted to a bracket or junction block under the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the multiple 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 location.
- 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 power functions—windows, locks, radio, and lights—to confirm proper operation.
- Perform Relearns if Needed: As noted in our post-installation section, certain vehicles may require a Brake Pedal Position Relearn or Airbag System Sync if warning lights appear. This typically requires a professional scan tool.
Verified Fitment for Your GM Vehicle
This module is a direct replacement for multiple part numbers, ensuring broad compatibility. Please verify your original part number or match your vehicle from the list below. This part is a guaranteed fit for a 2002 Silverado BCM and many other models.
This module is a direct replacement for part numbers: 15063578, 15081796, 15095334, 19208537, DKAK, DPNU.
Compatible Models Include:
- ✔ 2002-2005 Chevrolet Astro / GMC Safari
- ✔ 2002-2005 Chevrolet Blazer S10 / GMC Jimmy S15 / Oldsmobile Bravada
- ✔ 2002-2004 Chevrolet S10 / GMC Sonoma
- ✔ 2002 Chevrolet Avalanche 1500 (4×2)
- ✔ 2002 Cadillac Escalade (4×2)
- ✔ 2002 Chevrolet Silverado 1500, 2500, 3500
- ✔ 2002 GMC Sierra 1500, 2500, 3500, Denali
- ✔ 2002 Chevrolet Suburban 1500 (4×2), 2500
- ✔ 2002 Chevrolet Tahoe (4×2)
- ✔ 2002 GMC Yukon (4×2)
- ✔ 2002 GMC Yukon XL 1500 (4×2), 2500
Frequently Asked Questions
Real-World Repair Story
I remember a 2002 Sierra 2500 that came into my shop. The owner was at his wit’s end. His interior lights would flicker randomly, and the horn would occasionally blurt out when he used the turn signal. He’d already replaced the battery and checked all the grounds. After hooking up my scan tool, I saw a slew of communication errors (U-codes) pointing to the BCM. A visual inspection of the original BCM revealed faint signs of water intrusion near the connector—a common failure point on these trucks. We installed one of our pre-programmed modules, and in under an hour, every single one of his electrical headaches was gone. It’s a satisfying fix that takes a vehicle from frustrating to fully functional.
Do I need to send my old BCM back?
No, there is absolutely no core charge for this part. You can keep your original module without any extra fees or hassle.
Is this part difficult to install?
For someone with basic mechanical skills, the installation is straightforward. It primarily involves removing a dash panel and swapping the module. The key benefit is that our pre-programming eliminates the need for dealer-level computer work.
What information do you need to program the BCM?
After you complete your purchase, we will need the 17-digit Vehicle Identification Number (VIN) from your truck. This ensures we load the exact correct software and settings for your specific vehicle configuration.
What if my airbag light is on after installation?
In some cases, the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). This is a simple procedure called ‘Setup SDM Primary Key in BCM’ that can be performed by a technician with a professional bidirectional scan tool.
Will this fix my intermittent no-start problem?
If your no-start issue is caused by the BCM’s control over the anti-theft system (like GM’s Passlock), then yes, replacing it with this programmed module is the correct and reliable solution.
Why is getting a pre-programmed module better?
It saves you a lot of time, money, and hassle. A dealership can charge $150 or more just for programming. Our service bundles the part and the programming into one simple, cost-effective package that arrives ready to install.