2007 – 2011 GMC SIERRA 3500 Body Control Module (BCM) 15943678 – Pre-Programmed to Your VIN with One-Year Warranty from Highway71AutoParts.com
Ever dealt with your 2007-2011 GMC Sierra 3500 suddenly losing power to the windows or lights flickering unpredictably during a long haul? As a seasoned mechanic who’s diagnosed countless electrical gremlins in heavy-duty trucks like yours, I know how frustrating it can be when the body control module starts failingโoften leaving you stranded with security alerts or HVAC woes. Questions like “why is my Sierra 3500 door locks not working” or “how to fix airbag light in 2007 GMC Sierra 3500” flood forums, and the culprit is frequently a worn BCM. Enter this OEM-spec GM 15943678 BCM, pre-programmed to your exact VIN for seamless integration. It’s a direct replacement that restores control over lights, locks, wipers, and more, compatible across GM lineup including Silverado, Tahoe, Yukon, and Escalade models. With interchangeable options like 25844480, 25835966, and others, it fits right in without hassle. This isn’t just a partโit’s a reliable fix that gets your truck back to peak performance, drawing on the latest GM software for flawless operation.
Common Issues & How This Fixes Them
In my years working on GMC trucks, I’ve seen failing BCMs cause a range of headaches in 2007-2011 Sierra 3500 models. One common sign is erratic HVAC behavior, like the blower motor cutting out mid-driveโoften tied to corroded circuits or moisture damage inside the module, leading to lost comfort on those cold mornings. Another red flag? The airbag warning light popping up with DTC B1001, stemming from communication breakdowns that could compromise safety systems. Electrical glitches, such as power windows refusing to budge or door locks failing, usually point to internal relay failures, exacerbated by the truck’s exposure to rough terrain and vibrations. Security malfunctions might trigger no-start conditions, misfires, or even stalling, often due to faulty grounding or software glitches. Various body-related DTCs can appear, signaling broader electronic disruptions. Replacing with this VIN-programmed 15943678 BCM resolves these by recalibrating the system’s core functions, preventing recurring codes and ensuring stable power distribution. From real shop stories, like a fleet owner whose Sierra wouldn’t lock after a rainstorm, this swap fixed it instantlyโno more diagnostic headaches.
Key Features & Benefits
- Starts with precise VIN programming using current GM protocols, delivering instant plug-and-play setup that clears persistent DTCs and skips dealership visits for smoother daily drives.
- Boosts overall dependability by overseeing vital electronics like interior lighting, wiper controls, and climate systems, minimizing risks of sudden failures in demanding work environments.
- Adheres to strict OEM guidelines with a full one-year warranty, built tough for the rigors of towing or off-road use in your Sierra 3500.
- Offers broad interchangeability with numbers such as 25835966, 15263363, and 15926094, making it a versatile choice for targeted repairs without compatibility worries.
- Eliminates core charges, so you retain your old unit freely while enjoying enhanced security features that deter theft and stabilize engine performance.
Easy Installation Guide
- Provide your VIN during purchase to ensure the module arrives pre-programmed for your specific 2007-2011 GMC Sierra 3500.
- Locate the BCM under the steering columnโdisconnect the battery first for safety, then remove any panels for access.
- Unplug the old module carefully, checking for any corrosion or loose grounds that could cause ongoing issues.
- Install the new 15943678 BCM, reconnecting all harnesses securely and reassembling the dash area.
- Reconnect the battery and test functions like lights, locks, and HVAC to confirm operation.
- If a no-start happens post-install (rare), perform a theft deterrent relearn: Insert key, turn to ON for 10 minutes, off for 5 secondsโrepeat three times until the security light goes out.
Fitment Details
Compatible with:
2007 – 2011 GMC SIERRA 3500
Verify part numbers; provide VIN for confirmation. No core charge required.
Don’t let BCM troubles sideline your Sierra 3500 any longerโgrab this pre-programmed 15943678 today for reliable fixes and peace of mind on the road. With fast shipping and expert advice from Highway71AutoParts.com, you’re one step from restored functionality. Order now and drive confidently!