Is your GM truck or SUV experiencing bizarre electrical issues?
If you’re dealing with flickering lights, malfunctioning power windows, a temperamental security system, or other strange electronic behavior in your 2002-2005 GM vehicle, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central command center for your vehicle’s body electronics, and when it starts to fail, it can cause a wide range of frustrating problems. Get back on the road with confidence with this direct-fit, VIN-programmed BCM.
From the Diagnostic Bay
We had a 2003 Chevy Blazer S10 come into the shop with a classic BCM failure symptom: the windshield wipers wouldn’t turn off, no matter the switch position. The owner had already replaced the switch and the wiper motor to no avail. We scanned the vehicle and found communication loss codes pointing directly to the BCM. Instead of a costly trip to the dealer for a new module and programming, we installed one of our pre-programmed units. The customer provided his VIN, we flashed the module, and after a quick 15-minute installation, the wipers worked perfectly. It’s a simple fix for a problem that can seem incredibly complex.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security or anti-theft light flashing, causing a no-start condition.
- ✔ Instrument cluster gauges behaving erratically or not working.
- ✔ Windshield wipers operating intermittently or not shutting off.
- ✔ The radio or climate controls functioning incorrectly.
- ✔ False warning messages appearing on the driver information center.
Diagnosing and Replacing Your 2002-2004 S10 BCM
This Body Control Module is a reliable and cost-effective solution to restore your vehicle’s electronic functions. We take the guesswork and hassle out of the replacement process. Simply place your order and provide us with your vehicle’s VIN. Our technicians will program the module with the latest software updates from GM, ensuring it is a perfect match for your vehicle’s specific configuration. This means no expensive dealer programming is required—it arrives at your door ready for installation.
This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU, and fits a wide range of GM trucks and SUVs, including the Chevrolet S10, Blazer, Silverado, Tahoe, and GMC Sonoma, Jimmy, Sierra, and Yukon. Please verify your part number and check the detailed fitment list to ensure compatibility.
Post-Installation Information
Installation is straightforward, but some vehicles may require additional steps for full functionality. There is no core charge, so you can keep your old part. After installing the new BCM, be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is on after installation, a technician will need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation.
Always consult a factory service manual or a qualified technician for vehicle-specific guidance.
Frequently Asked Questions
What does the BCM actually do?
The Body Control Module (BCM) is a computer that manages many of your vehicle’s non-engine related functions. This includes power windows, locks, interior and exterior lighting, the security system, wipers, and more. It’s the brain behind your vehicle’s creature comforts and security.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is essential for the part to work in your vehicle.
Is this part difficult to install?
For most models listed, the BCM is located under the dash and is accessible with basic hand tools. It’s a plug-and-play installation. However, due to the potential need for post-installation procedures like an airbag sync, we recommend installation by a professional mechanic if you are not comfortable with vehicle electronics.
Will this fix the ‘Security’ light on my dashboard?
Yes, a faulty BCM is a very common cause of a persistent ‘Security’ light and no-start issues in these GM vehicles. Our pre-programmed BCM is designed to correctly sync with your vehicle’s anti-theft system, resolving this problem.
My original part number isn’t 15063578, but it’s on the list. Will this work?
Absolutely. This BCM is a direct replacement for all part numbers listed, including 15081796, 15095334, and 19208537. We program it based on your VIN, so it will function correctly regardless of which of these part numbers was originally in your vehicle.
What does ‘No Core Charge’ mean?
It means you do not have to send your old, broken BCM back to us. You can keep it, recycle it, or dispose of it as you see fit. There are no extra fees or deposits.