Is Your GM Truck Plagued by Baffling Electrical Problems?
If you’re dealing with flickering lights, unresponsive power windows, a dead HVAC system, or a security light that won’t turn off, you’re likely facing a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it malfunctions, it can cause a cascade of frustrating and seemingly unrelated issues. This genuine quality GM Body Control Module, interchangeable with part number 15263363, is the definitive solution for your 2007-2013 GM truck or SUV, including the Sierra, Silverado, Tahoe, and Yukon.
From the Diagnostic Bay
We had a 2011 Silverado 2500 in the shop that was driving the owner crazy. The battery would die overnight, the radio would randomly turn on, and the power door locks had a mind of their own. He’d already replaced the battery and alternator. After hooking up our diagnostic scanner, we saw a dozen communication codes all pointing back to one source. We traced it to a faulty BCM that was creating a parasitic draw and sending erratic signals. Installing a VIN-programmed module like this one solved every single issue in under 10 minutes. It’s a common failure point, but thankfully, it’s a straightforward fix.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights staying on, flickering, or failing to activate.
- ✔ HVAC controls are unresponsive, or the blower motor operates erratically.
- ✔ The vehicle’s security system malfunctions, preventing the engine from starting.
- ✔ An airbag warning light is illuminated, often with DTC B1001.
- ✔ Unexplained battery drain while the vehicle is parked.
- ✔ Wipers behaving erratically or not working.
The Plug-and-Play Advantage: Pre-Programmed for Your VIN
Don’t waste time and money on a trip to the dealership. We take the hassle out of the repair by pre-programming this module to your vehicle’s specific Vehicle Identification Number (VIN) before shipping. This ensures that all factory settings and vehicle options are correctly configured, making the installation a simple plug-and-play process. It arrives ready to install, restoring full functionality right out of the box.
Installation and Post-Install Notes for Your 2013 Sierra BCM
Physically installing the BCM is typically a quick job. It’s located under the driver’s side dashboard, near the steering column. However, after installation, some vehicles may require additional electronic procedures. If an airbag warning light appears, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function to sync the systems. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary. These procedures are not always required but are important to be aware of for a complete repair. Best of all, there is no core charge—you can keep your old part without any extra hassle.
This module is a direct replacement for a wide range of part numbers, including: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, and 22860591. By ordering this pre-programmed 2013 Sierra BCM, you are getting a reliable, long-term solution to restore your truck’s vital electronic functions.
Frequently Asked Questions
What does a Body Control Module do on my truck?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, door locks, interior/exterior lights, the security system, wipers, and the HVAC climate control system.
Is this BCM really plug-and-play?
Yes, because we program it to your vehicle’s VIN before it ships, it is ready for installation without needing a trip to the dealer for programming. In some cases, a post-install procedure like an airbag system sync may be required if a warning light appears.
What happens if I install a BCM that isn’t programmed?
An unprogrammed BCM will not work correctly. Your vehicle may not start, or key features like power windows and locks will be inoperative because the module doesn’t recognize your vehicle’s specific configuration and security keys.
Where is the BCM located on my 2013 Sierra?
The Body Control Module is typically located under the driver’s side of the dashboard, often attached to a bracket near the steering column or the main fuse box area.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module without any additional fees or hassle.