buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Idle/Throttle Speed Control Unit > < Idle Air Control (IAC) Valve Check (Chart C-2B)|Page 3152
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Idle Speed/Throttle Actuator - Electronic: Service and Repair

To reset the Idle Air Control (IAC) valve pintle position, proceed with the following:

1.

Cycle the ignition key "ON" then "OFF" to reset the IAC.

2.

START the engine and allow engine to reach operating temperature.

3.

The ECM will reset the IAC whenever the ignition switch is turned "ON," and then "OFF."

Idle/Throttle Speed Control Unit > < Idle Air Control (IAC) Valve Check (Chart C-2B)|Page 3152