Restore Full Electrical Function to Your GM Truck or SUV
Is your Chevrolet Silverado, GMC Sierra, or Cadillac Escalade plagued by frustrating electrical issues? Intermittent power windows, a malfunctioning HVAC system, or random warning lights are common signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a wide range of confusing and disruptive problems. This genuine quality GM Body Control Module, part number 15263497, is the definitive solution to restore your vehicle’s performance and reliability.
From the Diagnostic Bay
We had a 2009 Sierra 1500 in the shop that was driving the owner crazy. The radio would turn off randomly, the driver’s side window would only work sometimes, and the security light would flash, occasionally preventing the truck from starting. The owner had already replaced the battery and checked fuses with no luck. After connecting our scanner, we saw multiple communication loss codes pointing to the BCM. A quick check under the dash revealed minor corrosion on a BCM connector pin from a leaky windshield seal. We replaced it with a VIN-programmed module, and every single electrical gremlin vanished. It’s a perfect example of how this one component can cause a cascade of seemingly unrelated issues.
Symptoms of a Failing GM Body Control Module
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely your BCM is the culprit:
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, dome lights) failing to work correctly.
- ✔ HVAC controls are unresponsive, or the blower motor works intermittently.
- ✔ The vehicle’s security system malfunctions, causing no-start conditions.
- ✔ An airbag warning light is illuminated on the dash, often with DTC B1001.
- ✔ Wipers behaving unpredictably or not parking in the correct position.
- ✔ Communication errors with other vehicle modules, leading to various diagnostic trouble codes (DTCs).
Plug-and-Play Solution: No Dealer Visit Required
The biggest challenge when replacing a BCM is the need for expensive dealership programming. We eliminate that step entirely. Simply provide your vehicle’s VIN during checkout, and we will program the module with the latest GM software specific to your truck or SUV. This ensures that when the part arrives, it’s ready for a straightforward, plug-and-play installation. This process restores all original functions and resolves common DTCs without any additional setup.
This module is a direct replacement for a wide range of part numbers, including 25844480, 25835966, 15263363, 15878753, 20939137, and 22860591. Located under the steering column, installation typically takes just a few minutes. While the process is simple, be aware of potential post-installation procedures. If the airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. In some cases, a Brake Pedal Position relearn may also be necessary. With no core charge, you can complete the repair without the hassle of sending your old part back.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that controls and monitors many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, security system, and the HVAC system. It’s the command center for passenger comfort and convenience electronics.
Is this BCM truly plug-and-play?
Yes! By providing your VIN when you order, we pre-program the module specifically for your vehicle. This allows you to install it without needing a trip to the dealership for expensive programming, saving you time and money.
Where is the BCM located on my vehicle?
On most 2007-2013 GM trucks and SUVs like the Silverado, Tahoe, and Yukon, the BCM is located under the driver’s side dashboard, near the steering column. It’s typically accessible after removing a lower dash panel.
What if the airbag light is on after I install the new BCM?
If the airbag light appears after installation, it means the new BCM needs to be electronically synced with the vehicle’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a common step for this repair.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module, which simplifies the replacement process and saves you the cost and effort of return shipping.