Another oil pressure question 2006 Chevy 6 liter gas

Check oil level first. If level is ok and u recently dis an oil change, check the oil pressure with a gauge to see if sending unit is going bad. Or just replace the oil sending unit if u don't want to go through the hassle of checking pressure

Oil level was down a half quart so I topped it off , oil and filter was changed a couple of months age and dash display says 80% oil life left. How about a screen or filter under the the sending unit ?

How's the oil level and the filter? (just have to ask.) Does this have an external oil cooler? You can unplug the oil pressure sending unit and temporarily install a mechanical oil pressure gauge, then you'll know for certain what the oil pressure really is. There is also a screen where the sending unit plugs in, so try cleaning that out as well. It's hard to believe such a low-mileage truck could have a bad oil pump or gunked up pick-up screen or tube, so hopefully for you it's just a bad sending unit reading.

the screen under the sending unit , how does it come out , what is recommended to use to remove it ? Thanks , Gene

Well I changed the sending unit today and that didn't help, still the same. didn't check the screen , couldn't even see it, couldn't even see the hole the sending unit came out of. Tore up my hands and arms trying to my hands back there.

There is no screen, u need to make sure the hole is cleared of any debrie that will prevent oil flow. If u can't access the hole, star it up and see if it shoots oil out just to confirm it's cleared and remember to check oil pressure with a gauge

Yesterday after I changed the sending unit I started the truck up and it did the same thing as before, the chime went off the display said low oil pressure and the gauge read 0 (no engine noise) . After I reved the engine to about 3500 RPMs the op gauge went to 45psi at idle the display went off and the chime turned off, everything was normal and I drove it around the neighborhood then came home and shut it off, then started it back up again and everything was good, I shut it off again and let it sit for about 10 minutes then started it up and there was the chime ,low oil pressure and 0 on the gauge again, then I rev it to 3500 RPM and everything is all normal again. Ant ideas ? Gene

Like I mentioned before, u need to check pressure with a manual gauge, the gage in the truck doesn't really read the actual pressure. Check it when it's cold and again when it's at operating temperature

When I check it with a mechanical gauge if I choose to leave the mechanical gauge mounted inside the truck and not use the stock electrical setup do I just leave it unpluged will that effect the dash readout and the chime bells ?

U can leave it but u'll get the alarm that ur getting now because it thinks the pressure is low. I wouldn't drive around with it, you just want to findout if the pressure is low or not