Restore Your Truck’s Electrical System with a Plug-and-Play Solution
Is your 2002 Silverado or other GM truck experiencing bizarre electrical problems? Flickering lights, power windows with a mind of their own, or a security light that prevents your engine from starting are classic signs of a failing Body Control Module (BCM). As the nerve center for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating issues. This isn’t just an inconvenience; it can leave you stranded. Stop chasing electrical gremlins and get a reliable, direct-fit solution.
We offer a genuine replacement BCM, part number 15081796, that arrives at your door fully programmed to your vehicle’s specific VIN. We install the latest GM software updates, ensuring optimal performance and compatibility right out of the box. This eliminates the need for an expensive trip to the dealership for programming, saving you time and money. Simply provide your VIN after purchase, and we’ll handle the rest.
A Technician’s Notebook: The Case of the Haunted Sierra
I had a 2002 GMC Sierra 2500 in the bay that was driving its owner crazy. The radio would turn on and off, the dome light wouldn’t work, and sometimes the power locks would cycle while driving down the road. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I found a slew of ‘U’ codes, indicating a loss of communication between modules. In my 20+ years of experience, this pattern almost always points to an internal failure in the BCM. After installing a VIN-programmed module like this one, all the phantom electrical issues vanished. It’s a common failure point, but thankfully, it’s a straightforward fix with the right part.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Erratic or non-functional power windows, door locks, or interior lights.
- ✔ The security or anti-theft light stays on, causing a no-start condition.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Wipers behaving erratically or not parking in the correct position.
- ✔ Communication error codes (like U0140) stored in the system.
- ✔ False warning messages on the instrument cluster.
A Straightforward Guide to Installation
Installing your new 2002 Silverado BCM is a manageable job for a DIYer with basic tools. While locations vary slightly, this guide covers the general process for most compatible trucks and vans.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait about 10 minutes to ensure all systems are powered down.
- Locate the BCM: On most Silverado, Sierra, and other full-size trucks/SUVs, the BCM is located under the driver’s side of the dashboard, near the steering column. On Astro and Safari vans, it’s typically behind the center dash panel.
- Remove Trim Panels: You may need to remove the lower dash knee bolster or other plastic trim panels to gain access. These are usually held in by a few screws or clips.
- Unplug and Unbolt: Carefully disconnect the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Then, remove the bolts or nuts holding the module in its bracket.
- Install the New Module: Seat the new, pre-programmed BCM into the bracket and secure it. Reconnect all electrical connectors, ensuring they click firmly into place.
- Post-Installation Checks: Reconnect the battery terminal. Start the vehicle and test all functions: power windows, locks, lights, wipers, and horn. Note that some additional steps may be required as outlined below.
Important Post-Installation Procedures
After installation, your vehicle may require one or more of the following procedures. This is normal, as the new BCM needs to sync with other vehicle systems.
- Airbag System Sync: If the 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 airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure proper brake light operation and to satisfy the traction control system.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following vehicles:
- Chevrolet Silverado 1500, 2500, 3500 Pickup (2002) – Body Control (BCM); (under steering column)
- GMC Sierra 1500, 2500, 3500 Pickup & Sierra Denali (2002) – Body Control (BCM); (under steering column)
- Chevrolet Avalanche 1500 (2002) – Body Control (BCM); (under steering column), 4×2
- Chevrolet Suburban 1500/2500 (2002) – Body Control (BCM); (under steering column), 4×2 for 1500
- Chevrolet Tahoe (2002) – Body Control (BCM); (under steering column), 4×2
- GMC Yukon & Yukon XL 1500/2500 (2002) – Body Control (BCM); (under steering column), 4×2 for Yukon/Yukon XL 1500
- Cadillac Escalade (2002) – Body Control (BCM); (under steering column), 4×2
- Chevrolet Astro Van (2002-2005) – Body Control (BCM); (center dash)
- GMC Safari Van (2002-2005) – Body Control (BCM); (center dash)
- Chevrolet Blazer S10 / GMC Jimmy S15 (2002-2005) – Body Control (BCM); (center dash)
- Chevrolet S10 / GMC Sonoma Pickup (2002-2004) – Body Control (BCM); (center dash)
Frequently Asked Questions
Frequently Asked Questions
Do I need to send you my old BCM?
No, there is no core charge for this part. You can keep your original module, which can be helpful if you ever need to reference old part numbers.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive your VIN, as the programming is essential for the part to function correctly in your vehicle.
Is this a simple plug-and-play installation?
Yes, because we program the module to your VIN, it is a direct physical and electronic replacement. In most cases, it is plug-and-play. However, as noted in the description, some vehicles may require an additional relearn procedure for the airbag or brake pedal position sensor.
Will this fix my security light and no-start problem?
A faulty BCM is a very common cause of security system issues on these GM models. Our VIN programming includes syncing the security information, which resolves this problem in the vast majority of cases, allowing your truck to start and run properly.
What if I order the wrong part?
Please use our detailed compatibility list to verify fitment. This BCM replaces multiple part numbers, including 15063578, 15081796, and 15095334. If you are unsure, check the part number on your original module or contact us with your VIN before ordering.