2006 – 2011 Lucerne Body Control Module 20921435 Programmed To Your VIN VIN BCM

2006 – 2011 Buick Lucerne Body Control Module (BCM) 20921435 – Pre-Programmed to Your VIN with One-Year Warranty from Highway71AutoParts.com

Ever dealt with your 2006-2011 Buick Lucerne’s doors refusing to lock while you’re rushing to an appointment, or the interior lights flickering like a bad horror movie during a rainy night drive? These frustrations often stem from a failing Body Control Module (BCM), the central hub managing everything from power accessories to security systems. If you’re searching for “symptoms of BCM failure in 2006 Buick Lucerne” or “how to replace BCM in 2011 Lucerne to clear electrical glitches,” this pre-programmed replacement is your reliable solution. Compatible with part number 20921435 and equivalents like 10382479, 15093910, and more, it fits seamlessly into models including the Equinox 07-09, Impala 06-12, and various Express/Savana vans—always verify with your VIN for exact match. Drawing from over two decades in auto diagnostics, I’ve seen how a faulty BCM can trigger DTC codes like B1370 or U0140, disrupting daily drives and even towing capabilities in heavier vehicles. This unit, flashed with the latest GM updates, restores smooth operation, clears those pesky codes, and enhances overall electrical reliability for safer, more dependable performance.

Key Features & Benefits

• Pre-flashed with GM’s newest software updates using your VIN, ensuring plug-and-play compatibility and eliminating programming hassles at the shop.
• Supports a wide range of vehicles beyond Lucerne, such as Acadia 07-12 and Tahoe 10, boosting versatility for multi-vehicle owners or fleet managers.
• Improves system stability, like consistent remote start functionality and anti-theft responses, which is crucial for cold-weather starts in older models.
• Comes with a one-year warranty, giving peace of mind against defects and supporting long-term vehicle reliability without extra costs.
• Helps clear diagnostic trouble codes (DTCs) related to body electronics, potentially preventing failed emissions tests or intermittent failures during heavy use.
• Enhances towing reliability in compatible vans like Express 2500, by stabilizing power distribution to lights and brakes for safer hauls.

Common Issues & How This Fixes Them

In my years fixing vehicles like the 2006-2011 Buick Lucerne, BCM problems often show up as erratic behaviors that escalate over time. For instance, you might notice power windows operating sporadically, especially after exposure to moisture— a common cause being corrosion in the module’s circuits from age or environmental factors. This can lead to frustrating scenarios, like being stuck in a parking lot with a window that won’t roll up. Another frequent issue is malfunctioning door locks or keyless entry, triggered by internal BCM faults that disrupt communication with sensors, potentially compromising vehicle security and convenience. I’ve diagnosed cases where dashboard warning lights, such as the security indicator, stay illuminated, pointing to DTC codes like B2960 that this replacement directly addresses by recalibrating the system. Additionally, in models with advanced features, a failing BCM might cause intermittent wiper failures or even affect climate control, reducing comfort during long drives. Replacing with this pre-programmed unit resolves these by restoring precise control over body functions, preventing cascading electrical issues. For Lucerne owners towing trailers, it stabilizes lighting circuits, avoiding hazards on the road. Expert tip: Always scan for codes before replacement to confirm the BCM is the culprit, saving time and avoiding misdiagnosis.

Easy Installation Guide

1. Provide your VIN after purchase so we can program the BCM with the latest GM updates tailored to your vehicle.
2. Disconnect the battery to ensure safety and prevent electrical shorts during the process.
3. Locate the BCM on the right side of the dash in your Lucerne, remove any panels, and unplug the old unit carefully.
4. Install the new BCM, reconnect all harnesses securely, and reattach the battery.
5. Perform a theft deterrent relearn if the vehicle won’t start: Insert key, turn to ON for 10 minutes, off for 5 seconds, repeat three times—only needed if no-start occurs post-install per GM standards.
6. Reset the airbag warning light by running the ‘Setup SDM Primary Key in BCM’ procedure with a diagnostic tool, and recalibrate the brake pedal if required for optimal safety.

Fitment Details

Don’t let BCM woes sideline your 2006-2011 Buick Lucerne any longer— this pre-programmed module restores reliability, clears DTCs, and boosts daily driving confidence. Order now from Highway71AutoParts.com to get back on the road swiftly with our one-year warranty backing you up.