No there is not. Just a open oil gallery hole.
Did you remove oil sending unit and install a oil pressure gauge in it's place and read it so you can rule out the gauge in the dash and sending unit ? If not, then do it. Then if you don't have oil pressure. Remove the oil pan and check the oil pump pick-up screen to see if it is stoped up, if it is replace oil pump and screen. If it's not then replace oil pump and screen anyway.
check the oil pressure snding unit first then check the pressure gage if both are good you need to replace oil pump Oil pumps in buick 3800,s do not go bad. Replace sending unit or the oil pump pickup screen is clogged.
with corbin the redneck
It would get dots on the screen if it had not been cleaned properly.
it breaks your screen
Worn main or rod bearings if pressure drops at idle. Faulty gauge or sending unit. Faulty oil pump or clogged pick up screen. Piece of crap car. Etc.
Evaluate the condition of the screen and make a decision. Since the vehicle is 9 years old, why not just go ahead and replace it while you've got the pan dropped.
You can fix Wii Black screen without sending it into Nintendo by pulling out the plugs at the back, and re inserting them.
THe viewsonic screen should be cleaned as needed,this time will vary on conditions.
¯_(ツ)_/¯
Check oil level Replace oil sending unit Engine internals worn due to mileage (as you raise the engine rpms oil pressure will raise) Weak oil pump? Clogged oil screen?
Check the oil pressure sending unit first. The oil filter could be bad or clogged. The oil pump filter screen might be clogged, or the fuel pump could be bad.