Disconnect the cable from the negative battery terminal, then remove the upper engine cover. For 2010 and later 3.5L V6 engines, remove the upper intake manifold. Locate the valve(s) and disconnect the electrical connector(s). Place rags under the valve to minimize oil leakage, and carefully clean around the valve to avoid dropping bits of debris into the opening. Remove the retaining bolt (if equipped), then unscrew the valve to remove it. Installation is the reverse of removal.