Are you battling frustrating electrical problems in your GM truck or SUV? Issues like flickering lights, malfunctioning power windows and locks, or a security system that prevents your vehicle from starting are often caused by a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can create a cascade of confusing symptoms. This replacement BCM, part number 15081796, is the reliable, straightforward solution to restore your vehicle’s functionality and peace of mind.
We had a 2002 Silverado 2500 in the shop that was driving the owner crazy. The interior lights would stay on, the radio would randomly shut off, and sometimes the truck wouldn’t start, showing a ‘Security’ light on the dash. After checking all the basics, we traced the issue to a faulty BCM. Instead of a costly trip to the dealer for a new module and programming, the owner ordered one of our VIN-programmed units. It arrived, he swapped it out in under an hour, and all the bizarre electrical gremlins were gone. It’s a perfect example of how the right part can save you hundreds in diagnostic and programming fees.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The security or anti-theft system activating incorrectly, causing a no-start condition.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Inconsistent windshield wiper operation.
- ✔ Communication errors with other vehicle modules, triggering various warning lights.
Your Plug-and-Play 2002 GM BCM Solution
Don’t let a faulty module keep your truck off the road. We make the repair process simple. This unit is a direct replacement for a wide range of GM vehicles and is compatible with part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. The critical advantage is our complimentary VIN programming service. Simply provide your vehicle’s VIN at checkout, and our technicians will flash the module with the latest GM software specific to your truck or SUV. This means it arrives ready for installation, eliminating the need for expensive dealership programming tools.
Important Post-Installation Information
While this module is designed for a straightforward installation, some vehicles may require additional steps to ensure all systems communicate correctly. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to satisfy the traction control system.
Always consult a factory service manual or a qualified technician if you are unsure about any part of the installation or post-installation process.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, interior lights, the security system, wipers, and more.
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 to program the module correctly.
Is this part difficult to install?
For most models listed, the BCM is located under the steering column or in the center dash area and is accessible with basic hand tools. The physical swap is typically straightforward for someone with moderate DIY mechanical skill.
Do I need to send my old BCM back?
No. This part is sold without a core charge, so you can keep your original module.
What if my airbag light is on after I install the new BCM?
This is a known possibility. It means the new BCM needs to be electronically introduced to the airbag system (SDM). A repair shop with a high-level diagnostic tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve the light.