It is on the rear of the 122 CID or 2 Liter motor below the exhaust manifold.
a temp sensor is located on the intake or the thermostat housing
ambient/battery temp sensor hi
where is the temperture sensor located on a 2002 chevy trailblazer with a 4200 motor
It does not have a fuel temp sensor.
The coolant temp sensor screws into the thermostat housing. This is located where the top radiator hose connects to the engine.
The coolant gauge temp sensor is a one wire sensor located on the right rear of the engine block.
The 1999 4.7 liter engine temperature sensor is located just above the thermostat housing. The sensor will be on the front of the engine.
Need to know what engine and what year.
The themostat is located in the top rad hose on the engine side, but I don't know about the sensor. In my 91 the coolant temp sensor is in the thermostat housing and the engine temp sensor is on the block.
On the 2002 4.3L engine the coolant temp sensor is located on the drivers side cylinder head between the #3 and #5 spark plugs.
There is not a separate cooling fan sensor, it controlled by the ECM which get it's reading from the ECT (engine coolant temp sensor)
If it has a 4.3L engine the temp sensor is located next to the thermostat housing.