GM 17113209
Idle Speed Control

First you must detach the Idle Control Valve harness connector and take out the fasteners holding the valve. Do not try to move the Idle Control Valve by pushing or pulling its pintle and ensure you never use any liquid or solvent cleaner when dealing with the Idle Control Valve. After that, take out the Idle Control Valve assembly and its o-ring, clean the Idle Control Valve's o-ring sealing surface, the pintle valve seat and the air passage using carburetor cleaner and a brush made for parts cleaning, but do not use a cleaner containing methyl ethyl ketone. Look for any breaks, signs of wear or deformation on the Idle Control Valve o-ring and change it if it seems damaged. When replacing the Idle Control Valve, check that it has the same shape and exact size as the former one, because they are designed specifically for the car. Determine the distance between the tip of the Idle Control Valve pintle and the mounting flange; if it is longer than 28 mm, use your fingers to gently pull back the pintle without hurting it. Put a little engine oil on the Idle Control Valve o-ring, set the Idle Control Valve assembly in place and attach the parts with 3.0 n.m (26 lb in.) of torque. Eventually, connect the harness for the Idle Control Valve and return its pintle back to its original position.

Disconnection of the negative Battery Cable accompanied by the engine cover removal marks the first step to replace the Idle Control Valve. The Idle Control Valve harness connector receives detachment and two Idle Control Valve mounting bolts require removal with caution against applying force to the pintle to protect the worm drive threads and using liquid or solvent cleaners. Cut off the Idle Control Valve from the Throttle Body assembly while also removing its associated o-ring. The parts cleaning brush needs a tiny amount of carburetor cleaner to wipe the Idle Control Valve o-ring sealing surface along with the pintle valve seat and air passage though methyl ethyl ketone and similar solvents should be avoided. Look for damages such as cuts or cracks or distortions on the Idle Control Valve o-ring before replacing it if damage is present. New Idle Control Valve installation requires finding an exact match while measuring the distance between the pintle and mounting flange before using finger pressure for slow retraction if distance exceeds 28 mm. Clean engine oil should lubricate the o-ring before installation between the mounting holes and Throttle Body. Install the Idle Control Valve mounting bolts by tightening them to 3 n.m (26 lb in). Reposition the engine cover and reconnect the negative terminal after finishing the valve harness connector installation. The procedure to reset Idle Control Valve pintle position when no scan tool is available involves turning on the ignition for five seconds followed by turning off the ignition for ten seconds and engine startup for a proper idle speed evaluation. Using a scan tool requires connection to the dlc followed by ignition on with engine off then choosing Idle Control Valve reset from special functions and permitting the reset function until the Idle Control Valve counter stops before starting the engine to verify idle speed accuracy.

Beginning the replacement of an Idle Control Valve requires the disconnect of negative Battery Cable followed by removal of engine cover. First disconnect the Idle Control Valve harness connector then remove all its fastening screws. The proper replacement procedure includes a ban on either pushing or pulling on the Idle Control Valve pintle since this action can hurt worm drive threads and exposure to liquid cleaners or solvents should be prevented on the valve. First remove the Idle Control Valve assembly with its attached o-ring. Use carburetor cleaner and a parts cleaning brush to remove carbon dust from surfaces on the Idle Control Valve o-ring sealing area as well as from the pintle valve seat and air passage. These cleaning steps require avoidance of methyl ethyl ketone solutions. Heavy deposits within the air passage require removal of the Throttle Body for satisfactory cleaning procedures. The installing process for new idle control valves requires the use of identical parts because each application depends on specific pintle dimensions and shapes. The Idle Control Valve pintle should be checked for position a against the mounting flange; use just finger pressure to carefully retract the valve pintle if it exceeds 28 mm. Apply clean engine oil to the o-ring before attaching the Idle Control Valve assembly along with the fasteners and tighten them to 3 n.m (26 lb in). Place the Idle Control Valve harness connector after reinstalling the engine cover and negative cable battery connection along with reset of the Idle Control Valve pintle positioning.

One should start the engine for 20 seconds before turning OFF the ignition for 10 seconds and finally restarting the engine to check for correct idle speed. Idle Control Valve resetting requires a scan tool to connect to the Data Link Connector followed by turning ON the ignition with the engine off. First find the Idle Control Valve Reset option in Special Functions of the scan tool, select that option then activate the reset function until the Idle Control Valve counter stops before starting the engine to check the proper idle speed.

Before starting Idle Control Valve replacement start by removing the negative Battery Cable and iat sensor harness connector. Next, detach the breather tube from the air cleaner outlet duct keeping in mind the wing nut securing the duct. Finally, loosen the maf sensor outlet clamp to remove the Throttle Body until the Idle Control Valve and o-ring seal. First disconnect the Idle Control Valve harness connector while undoing the maf sensor outlet clamp then lift the air cleaner outlet duct from the Throttle Body. Start by unhooking the Idle Control Valve mounting screws from the Throttle Body assembly to extract the Idle Control Valve along with its o-ring. Apply carburetor cleaner from a parts cleaning brush to the Idle Control Valve o-ring sealing surface and the pintle valve seat along with the air passage. Be careful not to submerge the Idle Control Valve in liquid cleaning solutions or solvents. Apply replacement Idle Control Valve o-ring before checking the pintle distance to its housing end, which should measure under 28 mm (1-1/8 in). Compress the pintle manually if distance from the valve motor housing to the end of the pintle exceeds 1-1/8 inch. After applying clean engine oil to the new Idle Control Valve o-ring you should insert the valve through the o-ring until all flange holes match the Throttle Body assembly. The Idle Control Valve mounting screws need clean screw threads before receiving application of thread locking compound gm p/n 1052624 or equivalent followed by screw torquing to 3 n.m (27 lb in). After attaching the Idle Control Valve harness you should reinstall the air cleaner outlet duct while tightening its wing nut and duct clamp to 4 n.m (35 lb in). Connect all components including the breather tube and the iat sensor connector as well as the negative Battery Cable before resetting the Idle Control Valve pintle position.

One should start the engine for 20 seconds before turning OFF the ignition for 10 seconds and finally restarting the engine to check for correct idle speed. Idle Control Valve resetting requires a scan tool to connect to the Data Link Connector followed by turning ON the ignition with the engine off. First find the Idle Control Valve Reset option in Special Functions of the scan tool, select that option then activate the reset function until the Idle Control Valve counter stops before starting the engine to check the proper idle speed.

The first action before replacing the idle control (IC) valve should include engine ignition off and removal of the engine cover. The first step began with removing the ic valve connecting harness and afterward proceeded with removing its attaching fasteners. Pulling or pushing the ic valve pintle should be avoided to keep the worm drive threads safe because the ic valve must never be immersed in any liquid cleaner or solvent. Take off the ic valve assembly together with the o-ring. A parts cleaning brush combined with carburetor cleaner will clean carbon deposits from the ic valve o-ring sealing surface and pintle valve seat and air passage. Ensure to avoid using cleaners with methylethylketone (MEK). It is normal to observe shiny spots on the pintle and seat surface however a thorough cleaning of the Throttle Body should be performed when heavy deposits block the air passage. Any cuts or cracks or visual deformation in the ic valve o-ring requires for replacement. The ic valve needs to be an exact match for the original unit because its pintle shape and diameter requirement is application-specific. Depress the ic valve pintle with finger pressure carefully until distance a measures less than 28 mm (1.10 in). Apply engine oil to the o-ring before installing the ic valve assembly alongside its attaching fasteners which need to be tightened at 3.0 n.m (26 lb in). First connect the ic harness then place back the engine cover while resetting the ic valve pintle back to its original position.

The replacement work for the Idle Control Valve requires a starting point of turning off the ignition while also removing the air cleaner outlet resonator. The Idle Control Valve harness connector should first disconnect followed by screw removal from the Idle Control Valve mounting points to extract the valve assembly together with its o-ring from the Throttle Body assembly. Clean the Idle Control Valve o-ring seating area along with pintle seat and air conduit through application of carburetor cleaner on a brush parts while avoiding methyl ethyl ketone and similar strong solvents. Any visibility of shiny spots on the pintle and seat does not prove shaft misalignment because vital cleaning needs to be performed on the Throttle Body when excess build-up exists in the air channel. The maintenance requires use of a new o-ring because replacing the original one would be inappropriate. New Idle Control Valve installation requires an exact replacement to the original component since application-dependent pintle dimensions and shapes need to match. Use your finger to retract the pintle then check if the distance between the mounting flange and valve pintle is greater than 28 mm (1-1/8 in). Use clean engine oil to lubricate the new Idle Control Valve o-ring while inserting it through the o-ring into the Throttle Body assembly by matching the mounting holes on the Throttle Body assembly to the flange holes. Before attaching Idle Control Valve screws with thread locking material gm p/n 1052624 or equivalent you must wash the screw threads and apply thread locking material which will be tightened to 3 n.m (27 lb in). Reset the Idle Control Valve through the ignition cycle with engine off by starting the on position for 5 seconds and then moving to the off position for 10 seconds. After this procedure stop the ignition restart the engine. Reattach both the Idle Control Valve harness connector and reinstall the air cleaner outlet resonator. Complete the procedure by starting the engine while inspecting its correct idle speed.

Begin the Idle Control Valve replacement process by turning ignition OFF followed by removing the engine cover. Disconnect the Idle Control Valve harness connector before removing the Idle Control Valve fasteners and fasteners. The worm drive threads on the Idle Control Valve pintle remain safe when you avoid pulling or pushing forces on them. Additionally, you must never submerge the Idle Control Valve into any liquid cleaner or solvent. Untie the Idle Control Valve assembly and O-ring seal from the system. Use carburetor cleaner and a parts cleaning brush to remove carbon from the Idle Control Valve O-ring sealing surface and air passage while the pintle valve seat needs cleaning with carburetor cleaner until methyl ethyl ketone is eliminated. Check the Idle Control Valve O-ring for signs of damage like cuts or cracks or deformation before replacing it with a new one. The installation of new Idle Control Valves must use specific components which match the original due to application-dependent pintle diameters and shapes. Measure the distance between the Idle Control Valve pintle tip and the mounting flange; repeat the measurement using only finger pressure if the reading exceeds 1.10 imperial inches while avoiding damage to the valve. Clean engine oil serves to lubricate the Idle Control Valve O-ring before setting the valve assembly into position with its fasteners tightened to 3 N.m (27 lb in). Reattach the Idle Control Valve harness connector before reinstalling the engine cover. Turn ON the ignition for 5 seconds while the engine remains off followed by 10 seconds of turning off ignition before starting the engine to check proper idle speed.

The first step before replacing the Idle Control Valve is to switch off the ignition and remove the engine cover. Remove the attaching screws on the Idle Control Valve after disconnecting its harness connector. It is vital to avoid using force on the Idle Control Valve pintle since this can break worm drive threads together with abstaining from soaking the valve in cleaning solutions or liquid solvents. Take away the Idle Control Valve assembly along with the o-ring. Apply carburetor cleaning solution along with brushes to remove carbon residues from the Idle Control Valve o-ring seating area and pintle seat along with air passage while strictly avoiding the use of methyl ethyl ketone-based cleaners. Actual alignment of the pintle and seat exhibits normal shiny marks. Heavy deposits within the air passage require complete cleaning of the Throttle Body before installation. Assess the Idle Control Valve o-ring for damage that includes cuts or cracks or distortion and perform replacement for any detected damage. New Idle Control Valve installation should involve identical components because the application-specific pintle shape and diameter need match. Use finger pressure to slowly retract the Idle Control Valve pintle but avoid causing damage since the distance measure a exceeds 28 mm (1.10 in). Apply engine oil to the Idle Control Valve o-ring before installing both the valve assembly and its screws while torquing them to 3 n.m (27 lb in). Reposition the Idle Control Valve pintle after reconnecting the Idle Control Valve harness and reinstalling both the engine cover along with resetting the Idle Control Valve pintle position.