Disconnect the battery's negative terminal, raise the vehicle, and disconnect the VSS electrical connector. Remove the VSS, air filter housing or air intake duct, intercooler, and upper engine mount. Disconnect the transaxle harness, drain the fluid, and remove the exhaust system. Remove the heat shield, driveshaft, and crossmember. Disconnect fluid lines, remove front VSS and torque converter turbine speed sensor. Remove the transaxle fluid pan and disconnect the rear VSS electrical connector. Follow the VSS wiring harness into the transaxle and disconnect the connectors. Remove the ground wire and push the harness through the case. Disconnect the rear VSS connector and remove the sensor. Installation is the reverse of removal. Ensure the harness grommet seats properly, clean the mating surfaces, apply RTV sealant to the pan flange, and tighten all bolts.