Restore Full Electrical Function to Your GM Truck
Are you battling a storm of strange electrical issues in your 2003-2007 GMC Sierra 3500? From flickering lights and a malfunctioning HVAC system to power windows with a mind of their own, a failing Body Control Module (BCM) is often the hidden culprit. The BCM acts as the central command center for your truck’s body electronics. When it malfunctions, it can trigger a wide range of frustrating and difficult-to-diagnose problems. This OEM-quality replacement, part number 15136225, is the definitive solution to restore your vehicle’s reliability and functionality.
Symptoms of a Failing Sierra 3500 Body Control Module
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ HVAC blower motor or climate controls operating erratically or not at all.
- ✔ Headlights, taillights, or interior lights staying on, flickering, or failing to turn on.
- ✔ Vehicle security system acting up, causing no-start conditions or false alarms.
- ✔ An active airbag warning light, often accompanied by DTC B1001.
- ✔ Wipers that won’t turn off or operate correctly.
- ✔ Multiple communication-related Diagnostic Trouble Codes (DTCs).
Plug-and-Play Solution: The Power of VIN Programming
The biggest hurdle in replacing a BCM is typically the need for expensive programming at a dealership. We eliminate that step entirely. Before this module ships, we program it to your vehicle’s specific Vehicle Identification Number (VIN). This process loads all the correct software and vehicle-specific options, ensuring complete compatibility right out of the box. There are no extra tools or dealer visits required for programming. This is a true plug-and-play repair that saves you time and money.
Installation and Post-Install Notes
Installation is straightforward for the average DIY mechanic. The BCM is typically located under the driver’s side dashboard, near the steering column. Simply disconnect the vehicle’s battery, unclip the wiring harnesses from the old module, remove it, and install the new one in its place. While the module is pre-programmed, some vehicles may require a ‘relearn’ or ‘sync’ procedure for specific systems after installation.
- Airbag System Sync: If the airbag light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light and traction control operation.
This module is a direct replacement for multiple part numbers, including 15116066, 15136225, 10383536, 15198116, and more. Order today and put an end to your truck’s electrical gremlins for good.
Frequently Asked Questions
What does a Body Control Module (BCM) do on my Sierra 3500?
The BCM is a computer that manages and controls many of your truck’s non-engine related electronic systems. This includes power windows, locks, interior and exterior lighting, the security system, wipers, and HVAC controls.
Do I need to have a dealer program this module?
No. We pre-program the module to your vehicle’s VIN before it ships. This makes the installation plug-and-play, saving you a costly trip to the dealership.
Is this BCM difficult to install?
No, for most individuals with basic tools, the installation takes less than 15 minutes. It’s typically located under the driver’s side dash and involves unplugging the old unit and plugging in the new one.
What if my airbag light comes on after I install it?
This can happen occasionally. It means the new BCM needs to be electronically synced with the airbag’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module without needing to send it back.
How do I ensure this part is correct for my truck?
This module fits a wide range of 2002-2007 GM trucks and SUVs. Please provide your VIN at checkout to ensure we program it with the exact software for your vehicle’s options. You can also match your original part number to 15136225 or any of the other interchangeable numbers listed.