If the truck only has the idiot light type, the sender would be found in the passengers side of the engine block above the starter. If the truck has an oil pressure gauge, you will only see a copper tube coming the passengers side of the engine block above the starter. There is no sending unit for the mechanical oil pressure gauge type.
The 1985 Toyota Camry oil pressure sender is located on the left-hand side of the engine. The oil pressure sender will be just above of the oil pan.
check the sender
the oil pressure sender on a 2000 gmc is in the back of the eng. top side
Next to the oil filter
Round shape oil pressure sender on the passanger side to the right of the oil filter. Oil pressure sender sends how much psi your oil pump pushes out to the ecu.
The oil pressure sender on a Mazda B2500 2.5 is located on the bottom of the engine near the oil pan. It constantly monitors the output and circulation of the oil pump.
The oil pressure switch and oil sender for older 454's are mounted on the lower left front of the engine block just above the oil pan.
Oil pressure sender /fuel pump switch for 1995 Pontiac transport 3.1 is located between oil filter and starter at front of engine.
1986 S10 Blazer 4X4 with 2.8L, The oil sender is located just to the right side of the oil filter and is a pain to get to...
On the 5.4 liter the pressure switch is on the Oil filter housing.
If you mean the oil pressure sender it's right next to the oil filter.
power for the fuel pump goes through the oil pressure sender so if you loose oil pressure it turns the engine off. Look at the oil pressure sender and the wire for it.