GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the throttle body fuel injection unit. Refer to Throttle Body Assembly Replacement.

  2. Object Number: 167730  Size: SH
  3. Disconnect the early fuel evaporation (EFE) heater (1) electrical connector.
  4. Remove the EFE heater (1) and the gasket from the intake manifold.

Installation Procedure


    Object Number: 167730  Size: SH
  1. Install the EFE heater (1) and a new gasket to the intake manifold.
  2. Connect the EFE heater (1) electrical connector.
  3. Install the throttle body fuel injection unit with a new gasket to the EFE heater. Refer to Throttle Body Assembly Replacement .