Restore Full Functionality to Your GM Truck or Van
Are you battling frustrating electrical gremlins in your Silverado, Sierra, Express, or Savana? A faulty Body Control Module (BCM) is often the culprit behind a wide range of perplexing issues, from flickering lights to non-functional power accessories. The BCM acts as the central command center for your vehicle’s body electronics. When it fails, it can disrupt communication between various systems, leading to unpredictable and annoying problems. This replacement BCM, part number 15136876, is the reliable solution to restore your vehicle’s proper operation.
From the Diagnostic Bay
We had a 2005 Silverado 2500 in the shop that was driving the owner crazy. The interior dome lights would not turn off, no matter what he tried, leading to a constantly drained battery. He’d already replaced the battery twice. After checking door switches and wiring, we traced the fault to an internal short in the BCM. It was keeping the lighting circuit active permanently. We installed a VIN-programmed BCM just like this one, and the problem was solved instantly. It saved him from endless diagnostic headaches and the cost of another new battery.
Common Symptoms of a Failing BCM
- ✔ Power windows, locks, or mirrors behaving erratically or not working at all.
- ✔ Interior or exterior lights flickering, staying on, or failing to illuminate.
- ✔ The security or anti-theft system light is on, and the vehicle may not start.
- ✔ The horn sounds randomly or doesn’t work when you press it.
- ✔ Climate control (A/C and heater) functions are unresponsive.
- ✔ Wipers operate intermittently or won’t turn off.
- ✔ Inaccurate or false warning messages appearing on the instrument cluster.
Why Choose Our Programmed GM Body Control Module?
Getting your truck or van back on the road shouldn’t be complicated. We take the guesswork out of the repair by pre-programming this BCM specifically for your vehicle. Simply provide us with your Vehicle Identification Number (VIN) after purchase, and our technicians will flash the module with the latest official GM software and calibrations that match your exact build. This ensures compatibility and significantly simplifies the installation process, eliminating the need for expensive dealership programming.
Installation and Post-Install Notes
While this module is designed for a straightforward swap, some vehicles may require additional steps after installation. Please be aware of the following:
- Airbag System Sync: If your airbag warning light illuminates after installation, a procedure called ‘Setup SDM Primary Key in BCM’ must be performed with a professional-grade scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure correct brake light operation and to satisfy the traction control system.
Always consult a factory service manual or a qualified technician for vehicle-specific procedures.
Frequently Asked Questions
Is this BCM a plug-and-play installation?
Because we pre-program the module to your vehicle’s VIN, it is as close to plug-and-play as possible. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal position sensor, which requires a capable scan tool.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your 17-digit VIN. We cannot ship your part until we receive this information, as the programming is essential for the part to function correctly.
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions. This includes power windows, power locks, interior and exterior lighting, the security system, wipers, and climate controls.
Will this part fit my vehicle?
This BCM is a direct replacement for multiple part numbers, including 15167329, 15194169, 15747545, and 15136876. Please review the detailed fitment list on this page to confirm compatibility with your specific year, make, and model.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.