Is your 2002 GMC Sierra or other GM truck experiencing bizarre electrical issues? You’re not alone.
The Body Control Module, or BCM, is the central command center for your vehicle’s body electronics. When it begins to fail, you can experience a host of frustrating problems that seem unrelated, from flickering interior lights and malfunctioning power windows to a security system that won’t cooperate. Don’t let these electrical gremlins sideline your truck. This pre-programmed BCM is the reliable, straightforward solution to restore full functionality to your vehicle.
From the Diagnostic Bay
We had a 2002 Silverado 2500 come in with a classic case of BCM failure. The customer complained that his power locks would cycle randomly while driving, the radio would shut off, and the security light was always on, preventing the truck from starting intermittently. After confirming power and grounds were good, we pinpointed the BCM. Instead of a costly trip to the dealer for a new module and programming, we installed one of our VIN-programmed units. The installation took less than an hour, and immediately, all the strange electrical issues were gone. The customer drove away with a perfectly functioning truck, saving both time and money.
Common Symptoms of a Failing GM BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not turning on.
- ✔ The security or anti-theft light is illuminated, possibly causing a no-start condition.
- ✔ Horn honking unexpectedly or not working when prompted.
- ✔ Inaccurate or non-functional gauges on the instrument cluster.
- ✔ Radio or climate control systems malfunctioning.
Why Choose Our Pre-Programmed 2002 Sierra BCM?
This isn’t just a replacement part; it’s a complete solution. We take the hassle out of the repair process. When you order from us, simply provide your vehicle’s VIN, and our technicians will program the module with the latest GM-certified software specific to your truck. This ensures that the BCM communicates perfectly with your vehicle’s other electronic systems right out of the box. You get a direct-fit replacement that bypasses the need for expensive dealership programming tools, making this a job you can confidently complete in your own garage.
Post-Installation Information
While our BCM is designed for a straightforward installation, some vehicles may require a simple relearn procedure to sync all systems. Please be aware of the following:
- 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 capable scan tool. This is only necessary if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure correct brake light and traction control operation.
This module is a guaranteed fit for part numbers: 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. Please verify your part number or consult the extensive fitment list to ensure compatibility.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer in your vehicle that controls and monitors a wide range of electronic accessories, including power windows, locks, lights, wipers, security systems, and more. It acts as a central hub for these functions.
Is this module difficult to install?
The physical installation is typically straightforward, involving the removal of a few dash panels and unplugging the old module to plug in the new one. As this unit comes pre-programmed to your VIN, it eliminates the most difficult step: software flashing.
Do I need to send my old BCM back?
No, there is no core charge for this module. You can keep your original part.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We must have your VIN to program the module before we can ship it.
What if my airbag light comes on after I install the BCM?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). A qualified technician with a professional diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.