The VSS is located in the transaxle housing at the rear section near the right driveaxle
The ODB code chart yields this; P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
2003 sunfire
The fan switch is a sensor located in right side of the head
http://autorepair.about.com/cs/troubleshooting/l/bl_obd_1.htmshows this code:P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)FriPilot
on the back of the motor wright below the crank sensor
In a 2004 Pontiac Sunfire, there are two oxygen sensors. One would be located in the exhaust before the catalytic converter. The other is located in the exhaust after the catalytic converter.
back side by coil pack
The vehicle speed sensor is located on the transaxle
The 2001 Pontiac sun fire speed control sensor is located on the front passenger wheel. The sensor can be found on the inside of the rotor.
The vehicle speed sensor is located on the side of the transmission. The sensor will be on the right hand side of the transmission, and should be labeled as such.
On a 2004 Ford F150, the vehicle speed sensor is located on the driveshaft of the transmission. Some models of 2004 Ford F150s use an ABS sensor instead of a vehicle speed sensor.
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter