Oil sending unit location on 2005 Chevy 6.0 silverado 3500

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 ...

Usually the oil sending unit on chevy is near the oil filter housing

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.

check the filter,, if its bad enough your oil won't pass through it, making it look like your oil is full, but its not moving, Chevy's have whats known as a stepper motor also on the oil gauge,, whats bad about that is if thats gone bad, you have to replace the whole gauge cluster which last time I checked is 250.00

You probably need a oil pressure sending unit it is located at the back of the engine and is a high failure

If its the same as a 5.3 V8 its on the backside of the motor about straight behind the radio. Its hard to see and hard to get to if you dont have small hands. I found a diagram online to locate it.

Under the intake manifold. Make sure you get the harness for the knock sensors. and clean out all of the rust and junk you're going to find donw in the holes before and after you replace the sensors.

Check the wire behind the guage.If not tight it will make the hand bounce.

the oil sending unit is located at the back of the motor right below the rotor cap it is about 3 inches long and has a 3 wire plug hooked t it