Tired of Bizarre Electrical Problems in Your GM Truck?
If you’re dealing with flickering dash lights, power windows and locks that don’t work, a security light that won’t turn off, or even a no-start condition, the culprit is often a failing Body Control Module (BCM). As the central hub for your truck’s body electronics, when the BCM goes bad, it can cause a host of frustrating and seemingly unrelated issues. This isn’t just an annoyance; it can affect the safety and reliability of your vehicle. This replacement module is the definitive, hassle-free solution to restore full functionality to your truck.
The biggest hurdle in replacing a BCM has always been the expensive and time-consuming trip to the dealership for programming. We eliminate that step entirely. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash this module with the latest official GM software specific to your truck. It arrives at your door ready to install, saving you hundreds of dollars and significant downtime. This is the most direct path to getting your 2002 Silverado 3500 BCM replaced and your truck back in top shape.
From the Diagnostic Bay
I remember a 2002 Sierra 2500 that came into my shop with a laundry list of complaints. The radio would turn on and off, the power locks worked intermittently, and the security light was always on, causing random no-start problems. The customer had already replaced the battery and checked all the fuses. After hooking up my scan tool, I saw a dozen communication error codes (U-codes) pointing to a network failure. Experience has taught me that when everything electrical goes haywire at once, the BCM is the first place to look. We confirmed the failure and installed one of our pre-programmed modules. In under an hour, every single issue was resolved. The customer was thrilled to avoid a massive dealership bill and get his reliable work truck back on the road so quickly.
Is Your Truck Showing These Symptoms?
- âś” Power windows, door locks, or mirrors operate erratically or not at all.
- âś” The security or anti-theft light stays illuminated, potentially causing a no-start condition.
- âś” Interior or exterior lights flicker, stay on, or fail to turn on.
- âś” The radio or climate controls are unresponsive or behave strangely.
- âś” False warnings appear on the instrument cluster (e.g., “Service 4WD”).
- âś” Communication error codes (like U0140) are stored in other modules.
- âś” The horn honks unexpectedly or doesn’t work.
A Straightforward Guide to Installation
- âś” Safety First: Always disconnect the negative terminal from your truck’s battery and wait about 10 minutes to ensure all systems are powered down.
- âś” Locate the BCM: On most Silverado, Sierra, and other full-size GM trucks/SUVs from this era, the BCM is located under the driver’s side of the dashboard, near the steering column. For vans like the Astro/Safari or smaller trucks like the S10/Blazer, it’s often behind the center dash area.
- âś” Swap the Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Unbolt or unclip the old BCM from its mounting bracket and remove it.
- âś” Install the New BCM: Mount your new, pre-programmed BCM in place and securely reconnect all the electrical connectors. You should hear a ‘click’ as they lock in.
- âś” Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position (without starting) and test all body functions: windows, locks, lights, radio, etc.
Important Post-Installation Steps
While our programming handles the majority of the setup, some vehicles may require additional steps to sync with other onboard systems. Please be aware of the following:
- Airbag System Sync: If the 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: In some cases, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to satisfy the traction control system.
We make this repair easier by offering a no-hassle, no core charge policy. You can keep your old module without any extra fees.
Will This Fit My Vehicle?
This BCM is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following GM models:
- Chevrolet Silverado 1500/2500/3500 Pickup (2002)
- GMC Sierra 1500/2500/3500/Denali Pickup (2002)
- Chevrolet Avalanche 1500 (2002, 4×2)
- Chevrolet Suburban 1500/2500 (2002, 4×2 on 1500)
- Chevrolet Tahoe (2002, 4×2)
- GMC Yukon & Yukon XL 1500/2500 (2002, 4×2 on 1500)
- Cadillac Escalade (2002, 4×2)
- Chevrolet Blazer S10 / GMC Jimmy S15 (2002-2005)
- Chevrolet S10 / GMC Sonoma (2002-2004)
- Chevrolet Astro Van (2002-2005)
- GMC Safari Van (2002-2005)
Note: Always verify your original part number or consult the fitment list before ordering to ensure compatibility. The functionality of this 2002 Silverado 3500 BCM is identical across all listed models.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive an email with instructions. You can simply reply to that email with your 17-digit VIN, or include it in the ‘notes to seller’ section during checkout.
Is this truly a plug-and-play part?
Yes, for over 95% of vehicles. We program it to your VIN so it communicates with your truck’s existing components. In rare cases, as noted above, a relearn procedure for the airbag or brake pedal sensor may be needed, which requires a capable scan tool.
What does ‘No Core Charge’ mean?
It means you do not have to send your old, faulty BCM back to us. There are no extra deposits or fees, which saves you the time and expense of return shipping.
Will this fix my ‘Security’ light issue?
A faulty BCM is one of the most common causes of a persistent security light and related no-start problems on these GM vehicles. Our VIN-programmed module correctly syncs with your vehicle’s anti-theft system, resolving this issue in the vast majority of cases.
My original part number isn’t DKAK but is on your list. Will this work?
Absolutely. The part numbers listed (e.g., 15063578, 15095334) are all interchangeable hardware. We load the correct software for your specific vehicle based on the VIN you provide, ensuring perfect function regardless of the original part number.