Where is the oil sending unit on a 93 chevy silverado 350 engine

Question edited for clarity.
Question moved to model category.

If you have a 4.3 or 5.7 Litre engine (Silverado Classic Body Style), it is mounted on the back of the intake manifold in a brass fitting just under where the fuel lines come up from the transmission bell housing.
Jun 4, 2013

I have a 2007 chevy silverado and need to replace the oil ...

The oil pressure sending unit is on the top, rear, driver's side of the engine.

By the time you hear noise from the engine it will be too late for that engine. You may need an oil pump replacement. Have a mechanic check the oil pressure. It's cheaper than replacing the engine.

Put a gage in the sending unit hole and see if the oil pump is weak, that is the best way to tell if the engine pump is ok.

The Oil Pressure Switch is located:Under hood, center, rear engine area, driver side of distributor, mounted in block. Here's what it looks like.he oil pressure switch is mounted to the top rear of the engine.

1. Remove the electrical connector from the switch.
2. Remove the oil pressure switch.
3. To install, reverse the removal procedures.

You might want to remove the old 1 and check gasket or oring. I replaced the 1 on my 5.0 it was leaking

Were is oil sending unit on a 1998 chevy z71 silverado 5.7 liter? Oil pressure is dropping to 1/8 of gauge

it might be the sending unit, is it a buick 350 or a chevy. 350? if a buick engine the sinding unit should be on the side of the timing cover if a chevy 350 next to the dist.

remove the oil sinding unit and install a manuel gauge and see just what the oil pressure is if below 10 psi at hot idle replace the bearings and oil pump in the engine. if this is a chevy 350 make sure you replace the camshaft bearings this is were we use to see the gratest oil pressure loss.

It sounds like oil pressure switch is bad. You said you changed? To clarify, your oil pressure switch is also a safety item that shuts down ignition when oil pressure drops. Try an oil pressure gauge (hand held) to relieve your nerves about engine seizure. Make sure you're not getting to much fuel in engine also, that will dilute oil to a thin viscosity and show low oil press.

it could be a few things oil sending unit /intake gasket/valve cover gasket/ rear oil seal /I would wash the engine and look starting from top down