The oil sending unit is located at the back of the engine- behind the intake manifold and just right of the distributor if you are standing in front of the car. There should be a blue wire connected to it.
The coolant sensor on a 1994 Buick Roadmaster is located just above the Harmonic Balance pully at about 2 oclock
eve
It is not an oil level sensor it is an oil pressure sensor. It just unscrews.
Powertrain Control Module (PCM)
Fuel Pressure Regulator is located on the fuel rail.
where is horn relay on 1995 buick roadmaster
Oxygen SensorOxygen Sensor Location
Which solenoid? BOB
front bottom of timing chain cover.
R H REAR OF THE ENGINE
underneath the dash board
its under the air filter container