If your oil pressure light comes on when the temperature shows high and pressure shows low, may be partly due to too thin oil.
If you are using 5W-30 change to 10W-40 during warm weather, the light will not come on with the high oil temperature.
If you problem is that the gauge shows oil pressure with the engine off, you have a gauge or sending unit failure.
Grab it from underneath the front of the back seat and exert a little pressure to jerk it up. It won't hurt the seat. The battery is located under the back seat. The seat goes back with no problem.
Do a fuel pressure check. I had the same problem and it was my fuel pump.
Speed Sensitive Suspension. You will need to check the computer codes to see what the problem is.
Can be a hole in the radiator or a problem with one or more of the hoses. A mechanic can run a pressure test to see where the problem(s) are located at.
drop the fuel tank, it is on top. But before you do that, make sure your fuel pressure regulator is not the problem, probably is.
The fuel pump pressure for a 2003 Cadillac Seville typically ranges from 40 to 50 psi (pounds per square inch) when the engine is running. This pressure is crucial for the proper functioning of the fuel injection system. If the pressure is outside this range, it could indicate a problem with the fuel pump, fuel filter, or fuel pressure regulator. Always refer to the vehicle's service manual for specific diagnostic and repair procedures.
Is it located in the fuel tank there is also a recall on this problem
If your Cadillac has the service engine soon light displayed, get it checked out as quickly as you can. It may be something as simple as a loose gas cap, but it can also be an engine problem or other serious situation that can damage your car if not corrected quickly.
I have the same problem. Either low pressure on fuel pupm or one of the injectors is leaking overnight. Im sure once you get it started it always starts
If your Cadillac Escalade is experiencing pressure in the gas tank, it could be due to a faulty fuel cap or a problem with the evaporative emissions control system (EVAP). A damaged or loose fuel cap can fail to seal properly, allowing pressure to build up. Additionally, issues with components like the charcoal canister or purge valve can lead to excessive pressure. It's advisable to have the fuel system inspected by a professional to identify and resolve the issue.
The "On Board Diagnostics" (OBD II) has detected a problem with something in the system. It should be looked at soon by a trusted mechanic.