Check wire at sending unit,maybe it came off. If oil pressure was zero it would be making a lot of noise I'm sure.

 

Replace the oil pressure sending unit. It's at the back of the engine in the center, to the rear of the intake. Difficult to do, but not impossible.

Buy a new one from GM and then get the special tool for your socket wrench that fits it. Should be about a 15 minute job.

Mike

 

Thanks Mike
I know I had to replace the sending unit for a while now.
Question: Is it safe to drive now?
Is the DIC sending a false message because of the defective sending unit?

 

Question: Is it safe to drive now?
Is the DIC sending a false message because of the defective sending unit?

The DIC is displaying information based on the sensor output. If the indication is false, the DIC is false. If the indication is correct, the DIC is correct.......

You can't make a determination of the failure of the sending unit without troubleshooting it. To troubleshoot it, you would need a direct reading gauge and a pressure source to test the sending unit. It is easier and a lot faster to just change the sending unit before you start the engine again. This may be a little too conservative for some people, but I would rather err on the side of prudence.

Sorry to put it on to you, but the bottom line is....... it's your call on what to do.

Respectfully submitted,

Mike

 

Thanks again Mike
I have previously had the unit checked and given a quote for repair. He said at the time it was definitely the sending unit It was somewhere around $250 I think. Because of the tight space between the firewall and the unit, they claimed they needed to remove the intake manifold to access the unit. It seemed a bit much at the time especially when some folks on here have done it themselves, I don't have the ability to do the work myself unfortunately so I have to rely on a shop to do the work.

 

Find another shop....... you don't have to pull the intake to change it. (Unless you have a supercharger)

 

Mike,

I took your advice and found another shop. I'm sure its the sending unit. I actually had it out for a little bit, (cautiously ), and it purred like a kitten. Anyway it will changed out tomorrow and hopefully the DIC messages will disappear with the new unit.
I'll let you know.....
Thanks again, I appreciate it.

 

Mike in AZ,
I had the oil sending unit swapped out for a new one today. All the nasty DIC messages disappeared, and the gauge reads a steady 40 PSI. Whew!....dodged a bullet there.
I wanted to thank you for your assistance ..
Thanks again...........

 

I had to pull the blower off mine to get to the sensor. I was having 80 psi all the time. Confirmed it was a bad sensor with the Tech 2 before I spent the time to pull the intake. Damn big job for such a cheap part...... but then I'm the one that put the S/C on voluntarily. Guess I can't blame GM too much.

Good to hear its fixed.

Mike