I just changed mine. It is on the top back of the eng. close to the fire wall. If you don't have a good tool to take it out you cand use a Plumbing stem puller. It worked great. proper size is 1 1/16.
The oil pressure sensor on a 1988 Chevy 1500 5.7 is located on the engine. It is on the right side, near the intake manifold.
Need the engine size.
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.
oil pressure switch or knock sensor
It is back by the distributor and screews into the engine just about were the distributor goes into the engine.
It's in the front of the engine above the oil filter
The process to change the pressure sensor is the same for any engine in the 2005 Silverado, but the location may change between engine types. The sensor should be close to the oil filter. Remove the sensor wire, then screw the sensor out. Screw a new sensor in, then reconnect the wire.
It is located in the rear of the engine. You must remove the engine cover inside the cabin. The sensor is in the middle, back of the engine. Assuming the engine is in front of you. It requires a deep socket size 1-1/16 to remove sensor.
On top of the engine, passenger side.
Right above the oil filter.
under the car engine, between the oil filter and the starter
Assuming you mean "fuel pressure regulator", year and engine size info we need to know, it matters.