Is Your GM Truck or Van Plagued by Electrical Gremlins?
If you’re dealing with bizarre and frustrating electrical issues in your 2002 GM vehicle, a failing Body Control Module (BCM) is often the culprit. The BCM is the central command center for your vehicle’s body electronics, controlling everything from your power windows and locks to the interior lights and security system. When it starts to fail, it can create a cascade of problems that are difficult to diagnose and can make your vehicle feel unreliable.
From the Diagnostic Bay
We recently had a 2002 Sierra 2500 in the shop with a list of strange symptoms. The radio would cut out, the power locks worked intermittently, and the security light would stay on, sometimes preventing the truck from starting. The owner had already checked all the fuses and replaced the battery to no avail. A quick scan revealed multiple communication fault codes all pointing to one component: the BCM. It was intermittently losing connection with other modules, creating electrical chaos. By replacing the faulty unit with a properly programmed BCM, we restored all functions and gave the owner back their dependable truck.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, mirrors, and door locks.
- ✔ Instrument cluster lights flickering, gauges behaving oddly, or warning lights (like Security or Service Vehicle) staying on.
- ✔ Interior dome lights or exterior lights not working correctly.
- ✔ Radio, HVAC, or climate control systems malfunctioning.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire up.
- ✔ The vehicle’s security system engaging randomly or preventing startup.
The Direct-Fit Solution: A Programmed 2002 Silverado BCM
Don’t let a faulty module keep you off the road. This replacement Body Control Module is the perfect solution for your 2002 Silverado, Sierra, Tahoe, Yukon, or other compatible GM vehicle. We take the guesswork and hassle out of the repair by pre-programming the module to your vehicle’s specific VIN before we ship it. This means it arrives ready for installation, loaded with the latest software updates from GM, ensuring optimal performance and compatibility. You get a reliable part without the need for an expensive trip to the dealership for programming.
This module is a direct replacement for the following part numbers: 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. Please verify your part number or consult our extensive fitment list to ensure compatibility.
Important Post-Installation Information
While this module is programmed for a straightforward installation, some vehicles may require additional steps to sync with other onboard systems. Please be aware of the following potential procedures:
- 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 BCM with the airbag system.
- Brake Pedal Position Relearn: Depending on your specific model, a brake pedal position sensor recalibration might be necessary to ensure your brake lights and traction control system function correctly.
Always consult a factory service manual or a qualified technician for vehicle-specific guidance.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM acts as the central computer for your vehicle’s body-related accessories. It controls non-engine related functions like power windows, locks, lights, wipers, security system, and the instrument cluster.
How does the VIN programming service work?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians will then program the BCM with the correct software and vehicle-specific settings before shipping it to you.
Is this part difficult to install?
The BCM is typically located under the steering column or in the center dash. The physical replacement involves unplugging the old module and plugging in the new one. However, as noted, some vehicles may require additional electronic relearn procedures with a scan tool after installation.
Will this fix my specific electrical problem?
This module will resolve issues directly caused by a faulty BCM. If you are experiencing symptoms like erratic lights, non-working power accessories, or security system faults, a failing BCM is the most likely cause.
What do I do if my airbag light turns on after I install the BCM?
This indicates that the new BCM needs to be synced with your vehicle’s airbag module (SDM). A qualified technician with a professional-grade scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your original module.