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<h2>What is an active grille shutter and how does it work?</h2>
An active grille shutter is a component found in some modern vehicles that can open and close the grille in front of the engine to control the amount of airflow entering the engine compartment. This technology is designed to improve aerodynamics, enhance fuel efficiency, and optimize engine cooling based on various driving conditions.
Active grille shutters work by adjusting the opening of the front grille to control the flow of air entering the engine compartment.
<h2>A step-by-step breakdown of how an active grille shutter operates</h2>
<ul>
<li>System monitoring: Sensors track engine temp, speed, and conditions.</li>
<li>Driving conditions: The control system decides optimal airflow based on sensor data.</li>
<li>Opening/closing: Adjustable vanes control grille opening.</li>
<li>Cooling mode: Opens during engine strain or high temps&mdash;Cools engine by increasing airflow.</li>
<li>Aerodynamic mode: Closes at high speeds or efficient cooling. Boosts aerodynamics for better fuel efficiency.</li>
<li>Cold start optimization: Keeps shutters closed for quicker warm-up. Enhances efficient combustion and emissions control.</li>
<li>Seamless automation: The system adjusts vanes automatically. No driver input is needed for real-time adjustments.</li>
</ul>
<h2>Active grille shutter replacement</h2>
<ol>
<li>Prepare: Park safely, and disconnect the battery.</li>
<li>Access: Remove grille/bumper parts if needed.</li>
<li>Disconnect: Unplug electrical connections if present.</li>
<li>Remove: Unscrew and detach the old shutter.</li>
<li>Install: Position and attach the new shutter.</li>
<li>Secure: Fasten with original screws/bolts.</li>
<li>Reconnect: Plug in electrical connections.</li>
<li>Reassemble: Put back grille/bumper parts.</li>
<li>Test: Reconnect the battery, and ensure proper operation.</li>
<li>Final check: Confirm the shutter works correctly.</li>
</ol>

Active Grille Shutter

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Air Filter Box

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Air Flow Sensor

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Air Intake Duct

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Air Intake Hose

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Air Intake Manifold Actuator Control Solenoid

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Air Intake Manifold Flap Adjuster

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Air Intake Manifold Runner Control Sensor

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Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

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Intake Manifold Flap Actuator

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Intercooler

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Oxygen Sensor

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Pressure Sensor

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Throttle Body

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Throttle Position Sensor

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Turbocharger

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Turbocharger Oil Line

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Vacuum Pump

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Air Filters & Intake Systems

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Camshaft Adjuster

Camshaft Adjuster Cover

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Camshaft Timing Gear

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Camshafts

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Engine Valve Cover

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Harmonic Balancer

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Timing Belt Kit

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

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Valve Lifters Tappet

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Cams, Timing & Valvetrain

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Belt Tensioner

Coolant Level Sensor

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

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Oil Cooler

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Oil Cooler Line

Oil Filler Cap

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Oil Filter

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Oil Filter Housing

Oil Filter Housing Cover

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Oil Level Sensor

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Oil Pan

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Oil Pump

Oil Pump Drive Gear Shaft

Oil Pump Pickup Tube

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Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

Engine Valve Covers & Ignition Coils Kits

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Glow Plug Relay Module

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Ignition Coil

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Ignition Coils & Spark Plugs Kits

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Ignition Distributor

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Ignition Starter Switch

Ignition Switch Actuator

Knock Detonation Sensor

Relay

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Spark Plug

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Spark Plug Wire

Electronic Control Modules, Ignition & Distributors

Engine Wiring Harness

Intake Manifold Repair Kit

Engine Components & Accessories

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Auxiliary Water Pump

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Expansion Tank

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Expansion Tank Mounting Plate

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Fuel Cooler

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Radiator

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Radiator Hose

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Radiator Support Assembly

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Temperature Sensor

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Turbo Hose

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Water Coolant Pipe

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Water Outlet

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Engine Cooling

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Engine Mount

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Engine Mounts

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Catalytic Converter

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EGR Valve

Emissions Fluid Pump

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Exhaust Fluid Heater

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Exhaust Gas Temperature Sensor

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Exhaust Manifold

Fuel Tank Breather Valve

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Fuel Vapor Leak Detection Pump

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Nitrogen Oxide Sensor

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Secondary Air Injection Check Valve

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Vapor Canister Vent Solenoid

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Exhaust & Emission Systems

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Fuel Filter

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Fuel Injection Control Module

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Fuel Injection Pressure Regulator

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Fuel Injector

Fuel Injector Kit

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Fuel Injector Module Wiring Harness

Fuel Line Kit

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Fuel Pump

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Fuel Sending Unit

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Fuel Tank Filler Neck Pipe

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Fuel Tank Strap

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Fuel Systems & Components

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

2019 GMC Terrain Active Grille Shutter

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