This is the Manifold Air Pressure sensor and removal and installation of this component on the V6 and the V8 engines can only be done in the following manner. For V6 engines start by removing the engine cover, after that unlock the electrical connector from the MAP sensor by pulling the lock while the release tab is depressed and then disconnect the connector. Third, turn the MAP sensor in anti-clockwise direction for One-quarter turn and pull it out of the intake manifold. Take out the O-ring and when it is in poor shape, with some cracks or other signs of wearing out then change it. Installation is done in a sequence that is an exact opposite of the one taken during the removal process. MAP sensors of V8 engines are situated on the rear part of the intake manifold close to the firewall, it may be 90 degrees rotated for removing a screw or bolt. Begin with the process of finally removing the top of the engine and the disconnecting of the electrical aspect as you did for the V6. TURN the MAP sensor a quarter turn counter clockwise to unlock it or unscrew the MAP sensor bolt if any. Again, you should remove it and check if it has worn out or not, if it has it should be replaced. To remove, unscrew the MAP sensor a quarter turn clockwise if it has been installed, exposed and tightened with a bolt, or loosen the bolt if it has been installed without a bolt.; To install position the MAP sensor in the mounting hole and either turn it a quarter turn clockwise or secure it with a bolt and to complete, reverse the removal steps.