GM 19351706
Idle Air Control Valve

Begin by turning off the ignition before removing the evap purge valve according to the instructions from this article. Unplug the electrical connector that serves the Idle Control Valve before you remove the retaining screws and then detach the Idle Control Valve and o-ring. The installation requires checking the cone length before placing the new valve to ensure it does not exceed 28 mm (1-1/8 in) and use manual compression if needed. Place the new Idle Control Valve in the Intake Manifold by fastening it with two screws that should be tightened to 3.0 n.m (27 lb in). The Idle Control Valve electrical connector needs reattachment while the technician installs back the evap purge valve. You should turn the ignition to on for ten seconds followed by turning it off for five seconds to reset the Idle Control Valve before starting the engine while it reaches operational temperature.

Begin Idle Control Valve replacement by disassembling the Throttle Body through removing the throttle control cable bracket and canister purge valve. Unplug the Idle Control Valve electrical connector while removing the Idle Control Valve screws to extract the unit and its o-ring from the opening. The first step for new valve installation involves compressing the pintle to a position less than 28mm (1-1/8 inch) from the motor housing. Install a new Idle Control Valve o-ring before you place the Idle Control Valve inside the Throttle Body. After this secure the attaching screws at 3.0 n.m (27 lb in). The Idle Control Valve electrical connector should be reconnected first before installing the canister purge valve and throttle control cable bracket. The Idle Control Valve must be reset through this procedure: turn on the ignition then turn it off while starting the engine which must reach its operational temperature.

One must begin Idle Control Valve replacement by dismounting the throttle control cable bracket from the Throttle Body followed by the removal of the canister purge valve and subsequent disconnection of the Idle Control Valve electrical connector. The process begins by removing two screws which attach the Idle Control Valve and extracting the valve and its o-ring from the unit. The installation of a new valve begins with a confirmation that the pintle reaches a position less than 28 mm (1-1/8 in) from the motor housing. Install the new idle control o-ring before you place the Idle Control Valve into the Throttle Body by tightening its attaching screws to 3 n.m (27 lb in). First connect the electrical connector to the Idle Control Valve while installing the canister purge valve followed by attaching the throttle control cable bracket. To reset the Idle Control Valve users should turn the ignition on followed by off before starting the engine while letting it reach normal operating temperature.

Starting the replacement of the Idle Control Valve requires removal of the canister purge valve and Idle Control Valve electrical connector detachment. You should detach the Idle Control Valve screws before pulling out the Idle Control Valve along with its o-ring. It is necessary to verify that the idle control cone extension does not exceed 28 mm (1 - 1/8 in) before valve installation. Additional manual pintle compression may be required. Install the new idle control o-ring following which place the Idle Control Valve in the Throttle Body. Fasten the valve using attaching screws until they reach 3 n.m (27 lb in) torque. Connect the Idle Control Valve electrical connector and install the canister purge valve after attaching the throttle control cable bracket. The powertrain control module (PCM) will execute an Idle Control Valve reset once ignition turns on followed by turning off; this process must be carried out. Begin the engine operation and let it warm up to temperature before continuing.

Remove the 2 screws retaining the IAC valve and take out the valve along with its O-ring.

Turn OFF the ignition and disconnect the IAC valve.