New Throttle Body for Rainier Escalade Silverado/Sierra 1500 2500 3500 2003-2006

Throttle Body for Rainier Escalade Silverado/Sierra 1500 2500 3500

This throttle body is a direct-fit electronic assembly that regulates airflow into the engine, delivering smooth throttle response and stable idle on 2003-2006 GM trucks and SUVs.

Overview

This throttle body replacement restores accurate air metering on 2003-2006 Rainier, Escalade, Silverado, and Sierra 1500 2500 3500 models. The throttle body controls the butterfly valve that feeds intake air to the engine, which translates driver pedal input into precise power delivery. It is a practical service part for owners chasing rough idle, hesitation, or a check engine light tied to throttle position codes.

Built For Performance

• Electronic throttle actuator responds quickly to pedal input for confident acceleration
• Precision-machined bore supports consistent airflow across the operating range
• Sealed electronics housing resists underhood heat, moisture, and vibration
• Integrated throttle position sensor maintains accurate signal to the ECM
• Direct-fit mounting flange with factory-style bolt pattern for straightforward installation
• Quality internal components designed for long service life

Fits These Machines

• for Buick Rainier
• for Cadillac Escalade
• for Chevrolet Silverado 1500
• for Chevrolet Silverado 2500
• for Chevrolet Silverado 3500
• for GMC Sierra 1500
• for GMC Sierra 2500
• for GMC Sierra 3500

On-The-Job Use

• Restoring driveability on trucks and SUVs with worn or failing throttle assemblies
• Daily driving and towing where reliable throttle response matters
• Service work after throttle-related diagnostic codes appear
• General maintenance on higher-mileage 2003-2006 full-size GM vehicles

Specs At A Glance

Good To Know

Q: Will this need a relearn after installation? A: Many vehicles require a throttle relearn or idle relearn procedure after replacement, so plan for a scan tool or dealer visit to complete the calibration.

Q: Can a dirty throttle body cause the same symptoms? A: Yes, carbon buildup can mimic throttle body failure, so inspect and clean the bore first and compare part numbers before replacing.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.