Restore Full Electrical Function to Your GM Van or Truck
Are you battling a frustrating array of electrical issues in your Chevrolet Express, GMC Savana, or another compatible GM vehicle? Seemingly random problems like malfunctioning power windows, erratic HVAC controls, a persistent airbag light, or a security system that prevents your vehicle from starting often point to a single culprit: a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics. When it fails, it can create a cascade of confusing and disruptive symptoms. This genuine GM BCM, part number 15116066, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play repair.
From the Diagnostic Bay
We had a 2006 Silverado in the shop with a classic “parasitic draw” issue that was killing the battery overnight. The owner had already replaced the battery and alternator twice. After hooking up a multimeter, we found a significant draw coming from the interior lighting circuit. The dome light wasn’t on, but the BCM was keeping the circuit energized even after the truck was off. Swapping in a VIN-programmed BCM like this one solved the battery drain instantly, saving the customer from further guesswork and expensive part replacements.
Common Symptoms of a Failing GM BCM
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-functional power windows, door locks, or mirrors.
- ✔ HVAC blower motor that won’t turn on, or climate controls that don’t respond.
- ✔ An illuminated airbag warning light, often with Diagnostic Trouble Code (DTC) B1001.
- ✔ Security system malfunctions, leading to a no-start or crank-no-start condition.
- ✔ Interior or exterior lights (headlights, taillights, dome light) behaving erratically.
- ✔ Wipers that won’t turn on or off.
Why Choose a VIN-Programmed 2004-2007 Express BCM?
This isn’t just a replacement part; it’s a complete, hassle-free solution. We handle the complex programming for you. By providing your vehicle’s VIN at checkout, we flash the module with the latest GM software specific to your vehicle’s configuration. This critical step ensures all systems communicate correctly right after installation, eliminating the need for an expensive trip to the dealership for programming. This module is built to strict OEM standards for reliability and longevity, backed by our one-year warranty. Plus, with no core charge, you can keep your old part without any extra hassle.
Installation and Post-Install Notes
Installation is typically straightforward. On most 2004-2007 Express and Savana vans, the BCM is located in the center of the dash. On trucks like the Silverado and Sierra, it’s usually found under the steering column. Simply disconnect the vehicle’s battery, remove the old module, plug in the new one, and reconnect the battery. In most cases, the vehicle will start and function correctly immediately. However, be aware of these potential post-installation procedures:
- Airbag System Sync: If the airbag light remains on after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure with a professional scan tool.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure correct brake light and traction control operation.
This module is a direct replacement for multiple part numbers, including: 10383536, 15136225, 15136877, 15198116, 15257043, and more.
Frequently Asked Questions
What does the Body Control Module do on a 2005 Chevy Express?
The BCM is the main computer for your van’s comfort and convenience features. It controls the power windows, door locks, interior/exterior lighting, HVAC system, security system, and wipers.
Is this BCM ready to install out of the box?
Yes. This module is professionally programmed to your vehicle’s VIN before shipping. This makes it a plug-and-play installation with no need for additional dealership programming.
Where is the BCM located on a 2004-2007 Express Van?
On the Express and Savana vans, the BCM is typically located behind the center dash panel, often near the radio or climate controls.
Will this fix my airbag light with code B1001?
A faulty BCM is a common cause for the B1001 code. Replacing it should resolve the issue, but you may need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light after installation.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep or dispose of your original module without any additional fees or hassle.