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<h2><span style="font-size: 18px;">What does a transmission shift solenoid do?</span></h2><p style="text-align: justify;"><span style="font-size: 14px;">The transmission shift solenoid is a critical element within an automatic transmission system. Its primary function is to manage the hydraulic pressure that activates the clutches and bands, enabling the transmission to transition smoothly between gear ratios. Automatic transmissions typically possess multiple shift valves, with each one responsible for governing a specific gear change, such as 1st to 2nd or 3rd to 4th. These shift solenoids must actuate at the optimal moment, as directed by the transmission control module, to ensure seamless, efficient gear shifts. The proper functioning of these shift valves is essential for the overall smooth and dependable operation of the automatic transmission.</span></p><h2 style="text-align: justify;"><span style="font-size: 18px;">Faulty transmission shift solenoid symptoms</span></h2><ul><li><span style="font-size: 14px;">Delayed or rough gear shifts due to improper hydraulic pressure control.</span></li><li><span style="font-size: 14px;">Transmission getting stuck in a particular gear or experiencing erratic, unexpected shifting.</span></li><li><span style="font-size: 14px;">Transmission slips between gears as the solenoid fails to engage the clutches properly.</span></li><li><span style="font-size: 14px;">Illumination of the check engine light, as the engine control module detects issues with the shift solenoid circuits.</span></li><li><span style="font-size: 14px;">Activation of the transmission's limp mode to prevent further damage when a shift solenoid malfunctions.</span></li></ul><h2><span style="font-size: 18px;">Transmission shift solenoid&nbsp;replacement</span></h2><p style="text-align: justify;"><span style="font-size: 14px;">Replacing a faulty transmission shift solenoid typically involves first identifying the specific malfunctioning solenoid using diagnostic trouble codes and symptom analysis. Once the problematic solenoid has been pinpointed, the next steps involve accessing the transmission housing, disconnecting the electrical connector, and physically removing the old solenoid. The replacement process then involves installing the new shift solenoid, reconnecting the wiring harness, and clearing any remaining diagnostic trouble codes. Finally, the transmission should be tested to ensure smooth, proper operation through all gear shifts after the repair. Following these steps carefully is crucial to successfully replace a defective transmission shift solenoid and restore full functionality to the automatic transmission system.</span></p><h2 style="text-align: justify;"><span style="font-size: 18px;">A-Premium - precise shift, lasting reliability</span></h2><p style="text-align: justify;"><span style="font-size: 14px;">Delivering the precise control and rock-solid reliability your transmission demands, featuring fast response times, consistent actuation, and advanced thermal management, our solenoids ensure smooth, seamless gear shifts under even demanding conditions. Constructed with durable, precision-engineered components, <a href="https://a-premium.com/">A-Premium</a> shift solenoids are built to withstand the rigors of the transmission environment. Their superior resistance to contamination and optimized hydraulic control provide unparalleled longevity, keeping your vehicle's transmission performing at its best for the long haul. With a 90-day free return policy, a 1-year warranty, and 24/7 customer service, we ensure your satisfaction is our top priority.&nbsp;</span></p>

Transmission Shift Solenoid

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Air Cleaner

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Air Filter Box

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Mass Air Flow Sensors/Car MAF Sensors | A-Premium

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

Air Intake Resonator

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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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Intake Manifold Repair Bracket

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Intake Manifold Runner Control Valve

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Intercooler

Intercooler Hose

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Oxygen Sensor

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Pressure Sensor

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Supercharger Pulley Drive Unit

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Supercharger Snout Rebuild Kit

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Throttle Body

Throttle Cable

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Throttle Position Sensor

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Turbocharger

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Turbocharger Gasket Kit

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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

Camshaft Kit

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Camshaft Timing Gear

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Camshafts

Chain Tensioner Adjuster

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Cylinder Head

Cylinder Head Assembly

Eccentric Shaft Actuator

Engine Timing Belt

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Engine Valve Cover

Engine Valve Cover Gasket

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Harmonic Balancer

Rocker Arm

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Rocker Arm Shaft Lifter Assembly

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Timing Belt Kit

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Timing Chain Gear

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

Valve Cover Gasket

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Valve Lifter Guides

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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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Crank Installer Tool

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

Crankshaft Pulley

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Engine Oil Dipstick

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

Harmonic Balancer Crankshaft Hub

Knock Sensor

Oil Baffle

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Oil Cooler

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Oil Cooler Line

Oil Drip Pan

Oil Filler Cap

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Oil Filter

Oil Filter Base

Oil Filter Cover

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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

Oil Separator

Serpentine Belt

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Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

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Electronic Ignition System

Engine Valve Covers & Ignition Coils Kits

Glow Plug

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Glow Plug Relay Module

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Ignition Coil

Ignition Coils & Spark Plugs & Wires Kits

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Ignition Coils & Spark Plugs Kits

Ignition Coils & Wires Kits

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Ignition Distributor

Ignition Lock Cylinder

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Ignition Starter Switch

Ignition Switch Actuator

Kill Switch

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

Pulley

Engine Components & Accessories

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Active Grille Shutter Actuator

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Auxiliary Water Pump

Drive Motor Inverter Cooler

Electric Engine Water Pump

Engine Coolant Air Bleeder Valve

Engine Coolant Pipe

Engine Coolant Shut Off Valve

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Expansion Tank

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Expansion Tank Mounting Plate

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Fan Pulley Bracket

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Fuel Cooler

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Overflow Hose Connector

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Engine Cooling

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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.

2008 Hummer H3 Transmission Shift Solenoid

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