Are you battling frustrating electrical issues in your Chevrolet Avalanche or other GM truck? Symptoms like flickering lights, unresponsive power windows, a malfunctioning HVAC system, or an illuminated airbag light often point to a single culprit: a failing Body Control Module (BCM). This GM 15116066 BCM is the definitive solution, arriving expertly programmed to your vehicle’s VIN for a true plug-and-play repair that restores full functionality without a trip to the dealership.
From the Diagnostic Bay
We had a 2005 Silverado 2500 roll into the shop with a laundry list of bizarre symptoms. The radio would cut out, the driver’s side power lock was dead, and the A/C blower motor worked only when it wanted to. The owner had already replaced the battery and checked fuses with no luck. After connecting our scanner, we saw multiple communication loss codes with the BCM. Instead of a complex and costly wiring chase, we installed a VIN-programmed 15116066 BCM. In under 10 minutes, every single one of the truck’s electrical gremlins was gone. It’s a common failure, and this part is the most reliable fix.
Common Symptoms of a Failing GM BCM
- ✔ Unresponsive or erratic power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or won’t turn on at all.
- ✔ HVAC system failures, such as a blower motor that won’t run or incorrect temperature control.
- ✔ An active airbag warning light, often accompanied by DTC B1001.
- ✔ Security system faults, leading to a no-start condition or random alarm activation.
- ✔ Intermittent operation of the windshield wipers.
Why Choose Our 2002-2006 Avalanche Body Control Module?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. The BCM is the central command for your vehicle’s body electronics. When it fails, it can cause a cascade of problems that are difficult to diagnose. Our module eliminates the guesswork. We flash it with the latest GM software updates specific to your VIN, ensuring it communicates perfectly with your truck’s other electronic systems right out of the box. This process resolves common software-related DTCs and ensures optimal performance.
Installation is straightforward for any DIY mechanic. The BCM is typically located under the driver’s side dashboard, near the steering column. Simply disconnect the battery, unclip the wiring harnesses from the old module, remove it, and install the new one. While most installations are seamless, some vehicles may require a ‘Setup SDM Primary Key’ procedure with a professional scan tool if the airbag light remains on. This syncs the new BCM with the airbag system. There is no core charge, so you can keep your old part without any hassle.
This module is a direct replacement for a wide range of part numbers, including: 10383536, 15136225, 15136877, 15198116, 15257043, and more, making it a versatile fix for many popular GM models like the Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade, and Hummer H2.
Frequently Asked Questions
What does a Body Control Module do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and the HVAC system.
Is this BCM difficult to install?
No, installation is typically very simple and takes less than 10 minutes. It’s usually located under the steering column, held in by clips. You just need to disconnect the battery and swap the modules.
Do I need to program this module after I receive it?
No. We pre-program the module to your vehicle’s specific VIN before shipping. This makes it a plug-and-play installation, saving you a costly trip to the dealership.
What if my airbag light is on after installation?
In some cases, the new BCM needs to be electronically introduced to the airbag system (SDM). This is done with a ‘Setup SDM Primary Key in BCM’ procedure using a professional scan tool. It’s a quick procedure a local mechanic can perform.
Will this part fit my 2004 GMC Sierra 1500?
Yes, this BCM is compatible with a wide range of 2002-2007 GM trucks and SUVs, including the GMC Sierra, Chevrolet Silverado, Tahoe, Yukon, and Cadillac Escalade. Please verify the part number or check the detailed fitment list.
Is there a core charge for my old part?
No, there is no core charge. You can keep or dispose of your old module without needing to send it back.