It's at the top rear of the engine near the distributor.
The oil pressure sensor, on your 2003 Chevrolet engine, is located on the front of the engine, just above the oil pan. The pressure sensor will have two wires going to it.
Apparently, there is none. They started using them in 1996.
The oil pressure sensor, on a 2008 Chevrolet Impala, is located on the front of the engine. The sensor will be just above the oil pan.
This sensor is at top rear of engine, next to distributor.
The Mass Air Pressure sensor is located at the top rear of the engine, close to the firewall. Remove the Vortec engine cover (I believe it's an 8mm), and from the driver's side, find the rear-most sensor connection (it has 3 wires), and follow it. The sensor looks like this:
It is on the right head beside the back spark plug.
The Chevrolet SSR oil pressure sensor is located on the right hand side of the engine. The sensor will be near the bottom of the engine block, just above the oil filter.
It is located at the top side rear of the engine block and right next to the distributor.
Passenger side, side of cylinder head next to sparkplug, single wire sensor, needs offset 13/16 wrench to remove it.
There is no adjustment, Factory sensor is made so when installed there will be .050 clearnce between senor and tab.
It sure can.
The knock 1 sensor on a Vortec 4.8 is located on the top of the engine. You will have to remove the intake to gain access to replace it.