2007 – 2011 Sierra 1500 Body Control Module 15943678 Programmed To Your VIN VIN

2007 – 2011 GMC SIERRA 1500 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 1500 suddenly losing power to the windows or the security system acting up, leaving you stranded in a parking lot? You’re not alone—I’ve seen this countless times in my shop, where a failing body control module turns everyday drives into frustrating puzzles. Questions like “why won’t my Sierra 1500 door locks work” or “how to fix intermittent HVAC in 2007 GMC Sierra” often point straight to the BCM. That’s where this OEM-spec 15943678 BCM comes in, pre-programmed to your exact VIN for seamless integration. It handles everything from lights and wipers to door locks and climate controls, restoring reliability without dealership hassles. Compatible across GM lineup including Chevrolet Silverado, Tahoe, Suburban; GMC Yukon, Sierra variants; and Cadillac Escalade models from 2007-2013. This isn’t just a replacement—it’s a smart fix that prevents cascading electrical failures, drawing on the latest GM software updates for peak performance. In real scenarios, like towing heavy loads on highways, a solid BCM ensures your truck’s systems stay responsive, avoiding breakdowns that could cost you time and money.

Common Issues & How This Fixes Them

One frequent headache in 2007-2011 GMC Sierra 1500 trucks is erratic HVAC behavior, where the blower fan cuts out randomly or controls freeze up. This often stems from degraded BCM circuitry failing to relay signals properly, exacerbated by moisture or vibration from rough roads. Swapping in this pre-programmed 15943678 module resolves it by recalibrating communication paths, ensuring consistent airflow and temperature regulation. Another common gripe? The airbag warning light flashing with DTC B1001, signaling a mismatch in safety data—I’ve diagnosed this in Sierras after minor fender benders, where the BCM loses sync with the supplemental restraint system. Our VIN-matched unit clears these codes instantly, enhancing occupant protection without extra scans. Electrical gremlins like non-responsive power windows or door locks trace back to BCM relay failures, often linked to poor grounds or age-related wear. This replacement fortifies those connections, preventing shorts that lead to stalling or security lockouts. Security system glitches, including false alarms or engine misfires from immobilizer issues, get fixed too—think of it as rebooting your truck’s brain. Grounding problems amplify these, so always inspect wires during install to sidestep repeats. In my experience, addressing these early saves owners from towing fees and downtime, especially in workhorse trucks like the Sierra 1500 used for hauling.

Key Features & Benefits

• VIN-Specific Programming: Tailored to your Sierra’s VIN with current GM protocols, enabling true plug-and-play without dealer visits—clears persistent DTCs right away for hassle-free operation.
• Robust System Control: Oversees vital functions like exterior lighting, wiper systems, and anti-theft features, delivering smoother performance and fewer diagnostic headaches in demanding conditions.
• Built for Longevity: Meets strict OEM guidelines with a full one-year warranty, standing up to daily abuse in trucks that see everything from city commutes to off-road trails.
• Wide Interchangeability: Swaps seamlessly with numbers including 25835966, 15263363, 15263497, 15878753, 15284816, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, 22860591—perfect for targeted repairs.
• No Extra Costs: Skip core charges entirely; retain your old part while enjoying quick shipping and expert guidance from our team.

Easy Installation Guide

1. Provide your VIN during purchase to ensure precise programming—our team handles it before shipping.
2. Locate the BCM under the steering column or dashboard; disconnect the battery first for safety to avoid electrical surges.
3. Remove the old unit by unplugging connectors and mounting screws—installation usually wraps in under five minutes with basic tools.
4. Connect the new 15943678 BCM and reconnect the battery; test basic functions like lights and locks immediately.
5. If a no-start condition arises post-install (rare but possible), perform a theft deterrent relearn: Insert key, turn to ON for 10 minutes, off for 5 seconds—repeat three times or until the security light extinguishes.
6. For lingering airbag lights (e.g., DTC B1001), use a diagnostic scanner to run the ‘Setup SDM Primary Key in BCM’ procedure; some models may need brake pedal recalibration for full safety integration—consult your manual or a pro if unsure.

Fitment Details

Don’t let BCM woes sideline your 2007-2011 GMC Sierra 1500 any longer—grab this pre-programmed 15943678 module today for reliable fixes and peace of mind. Order now from Highway71AutoParts.com for swift delivery and dedicated support that gets you back on the road fast.