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Removal & Installation

Remove air cleaner. Disconnect electrical connector. Remove retaining screws and ISC. To install, reverse removal procedure. To adjust ISC minimum and maximum authority, see GENERAL MOTORS V8 TUNE-UP article in TUNE-UP section.

NOTE: The ISC motor is factory calibrated and should not be disassembled. Replace as complete assembly only. DO NOT soak ISC motor in carburetor cleaner.
Fig 1: Exploded View of Throttle Body Assembly
G54353Courtesy of GENERAL MOTORS CORP.