How to Replace a Chevy Throttle Body

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A Chevy throttle body is designed to regulate the amount of airflow into the engine via the intake manifold. Attached to the opposite side of the throttle linkage, there is a throttle position sensor that sends a varying voltage signal to the computer signaling the position of the throttle plate. The computer uses this information in its regulation of the fuel injection and ignition. Some of the later-model Chevrolets have an electronic throttle, which uses an electric motor attached to the throttle body to actuate the throttle.

Things You'll Need

  • ¼-inch drive ratchet
  • Set of ¼-inch drive sockets
  • Phillips screwdriver
  • Common screwdriver
  • Lift the hood. Remove the air cleaner and duct, using the appropriate screwdriver or socket. Disconnect the electrical connector on the throttle position sensor by lifting the tab and pulling it out of the sensor.

  • Disconnect the throttle linkage, using the appropriate socket. Remove the electrical connector on the throttle motor, if applicable (depends on the year and model Chevy).

  • Remove the four nuts securing the throttle body to the intake manifold. When removing the throttle body, take care not to destroy the gasket between the mating surfaces, and be careful not to drop anything into the intake manifold.

  • Replace the throttle body in reverse of removal.

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