Tired of Chasing Electrical Gremlins in Your GM Truck or SUV?
As a technician with over two decades of experience, I’ve seen it all. A customer comes in with a vehicle that seems possessed: the dome lights flicker, the power windows work one minute and not the next, the security light is on, and the radio has a mind of its own. These aren’t separate problems; they’re classic symptoms of a failing Body Control Module (BCM). The BCM is the central hub for your vehicle’s body electronics, and when it starts to go, it can cause a cascade of frustrating, intermittent issues. This isn’t just an annoyance—it can affect safety systems and leave you stranded.
This is your permanent, reliable solution. We offer a direct-fit GM BCM Replacement that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This means no expensive trips to the dealership for programming. We load the latest GM software updates, ensuring optimal performance and communication with your vehicle’s other electronic modules. It’s the most dependable way to restore function and peace of mind.
From the Diagnostic Bay
A customer brought in his 2002 GMC Sierra 2500 last month with a laundry list of complaints. His power locks were acting up, the dash lights would dim randomly, and sometimes the truck wouldn’t start, showing a ‘Security’ warning. He had already replaced the battery and checked the alternator. After hooking up my scan tool, I saw multiple communication loss codes with the BCM. Instead of spending hours on complex wiring diagnostics, we started with the most likely culprit. We installed one of our VIN-programmed BCMs. The swap took less than 30 minutes, and after performing the required security and brake system relearns, every single one of his electrical issues was gone. He drove away with a truck that felt new again, saving hundreds compared to a dealership repair.
Is Your GM Truck or SUV Showing These Symptoms?
A faulty BCM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting (dome lights, headlights).
- ✔ Malfunctioning radio or climate control displays.
- ✔ Security system warning lights or no-start conditions.
- ✔ False warnings on the driver information center.
- ✔ Communication error codes (U-codes) when scanned.
A Straightforward Guide to Your BCM Installation
Installing your new BCM is a manageable job for a DIYer with basic tools. While the physical swap is simple, remember that post-installation procedures are critical for safety and function. This is a crucial part of a successful GM BCM Replacement.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most of these GM models, the BCM is located under the driver’s side of the dashboard, near the steering column, or in the center dash area. A quick search for your specific model will confirm its location.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM and remove it from the vehicle.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. Ensure they click into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- CRITICAL Post-Installation Steps: Your vehicle will not operate correctly until these are done. You will need a capable bi-directional scan tool. 1) Airbag System: Perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the BCM with the airbag module and clear the warning light. 2) Brake System: Some vehicles require a ‘Brake Pedal Position Sensor Calibration’ to ensure proper brake light operation and stability control function.
Verified Fitment for Your GM Vehicle
This BCM is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following models:
- ✔ 2002-2005 Chevrolet Astro Van
- ✔ 2002-2005 GMC Safari Van
- ✔ 2002-2005 Chevrolet Blazer S10 / GMC Jimmy S15
- ✔ 2002-2004 Chevrolet S10 / GMC Sonoma Pickup
- ✔ 2002 Chevrolet Silverado 1500, 2500, 3500 Pickup
- ✔ 2002 GMC Sierra 1500, 2500, 3500 Pickup & Sierra Denali
- ✔ 2002 Chevrolet Tahoe (4×2)
- ✔ 2002 GMC Yukon & Yukon XL (4×2)
- ✔ 2002 Chevrolet Suburban 1500 (4×2), 2500
- ✔ 2002 Cadillac Escalade (4×2)
- ✔ 2002 Chevrolet Avalanche 1500 (4×2)
Important: After purchasing, please send us your vehicle’s 17-digit VIN. We cannot ship your order until we have this information to program the module correctly.
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming for you before shipment. Using your VIN, we flash the module with the latest GM software specific to your vehicle’s configuration. You just need to perform the post-install relearn procedures.
What tools are required for the post-installation procedures?
You will need a professional-grade, bi-directional scan tool that can perform specific functions like ‘Setup SDM Primary Key’ and ‘Brake Pedal Position Sensor Calibration’. Basic code readers cannot perform these tasks.
Will this fix my ‘Security’ light and no-start problem?
In the vast majority of cases, yes. The BCM is integral to the Passlock/Passkey security system. A faulty BCM is a very common cause for these specific symptoms in 2002-2005 GM vehicles.
Where do I find my VIN?
Your 17-digit VIN can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
Is this a used part?
This is a high-quality, tested, and verified component that has been restored to full functionality and programmed with the latest software. It is a reliable and cost-effective alternative to a new dealer part.
What if I don’t perform the airbag and brake relearn procedures?
Your vehicle may not be safe to drive. The airbag warning light will remain on, meaning the system is likely inactive. The brake lights or traction control may not function correctly. These steps are mandatory for a safe and complete repair.