Threaded into the block behind the intake manifold near the firewall.
The 1994 Chevrolet Astro V-6 engine temperature sending unit can be located on the front of the engine. The temperature sending unit will be next to the thermostat housing.
On the front of the engine above the oil filter.
The 1986 Chevrolet Cavalier oil pressure sending unit can be found on the left-hand side of the engine. The oil pressure sending unit will be above the oil pan.
The oil pressure sending unit on the 4.7L engine is right above the oil filter.
Where is it located on the engine
The oil pressure sending unit, on a Chevrolet 4.3 liter V-6 engine, is located on the left side of the engine, just above the oil pan. The sensor is near the front of the engine.
In back of engine, on top, drivers side, close to distributor.
With a 4.3L engine, the oil pressure sending unit is in the back of the engine just to the drivers side of the distributor.
On the passenger side of the engine above the oil filter
Behind the A/C compressor on the engine block. 3.0 liter engine
Back of the block, have to remove the intake to get at it. Right beside the camshaft position sensor.
Back of the motor, next to the oil filter...