Can I trust these guys?
These trucks have common issues with oil pressure sensors,like someone else posted. And they also have cluster issues. Also have a lot of lifter issues, if you have any misfire codes, you could have a bad valve lifter, I've done a few of them recently.
I recommend to change your oil pressure sensor its giving your gauge a wrong reading the sensor is located top rear of intake. i hope my suggestion will help you.
The guage could be bad and losing connection triggering the message. My dads Tahoe reads low oil pressure but the sensor connection or stepper motor that moves the guage could and have had a history of being faulty.
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/steven_ce753208b7672ed6
SOURCE: Low Oil pressure light in idle at stop
Depending on the amount of miles, maintenance records, or how hard the car has been driven either by a previous owner, or by yourself. The engine's main crankshaft bearings or the connecting-rod bearings could be excessively worn.
Also, it could very well be a wiring problem to the sensor and/or computer causing the problem.
SOURCE: 2002 Chevy Tahoe Oil Pressure
oil pressure drops when rpm's drop to .well..zero...so no... oil pressure is a result not a cause likely....did you overheat it ? drive it to 107mph and have the rev limiter kick in? does it start and run now ?
SOURCE: I have a '93 chevy silverado 1/2 ton with oil pressure problems
Sounds like the engine bearings (crankshaft) are worn. Try using a heavyer grade of oil, unless you want to rebuild the engine.
SOURCE: OIL PRESSUE LOW
At some point, your engine is registering low oil pressure and warning you the oil pressure is insufficient to lubricate the engine properly.
How does the engine know this? What causes it? Excellent questions. The engine 'knows' this because there is one or more sensors that read the oil pressure all the time. The sensors report to the computer which reports to you. They could be faulty. On the other hand, there could be times when oil pressure IS low. Your oil pump may be mal-functioning. Normally, I would expect the oil pump to either do its job properly or NOT do it properly but not act intermittently. It may warrant being checked by a professional. Another reason for this condition could be the oil itself, though you report you just had it changed. Presumably, whom ever did the change put in the proper oil grade, service and weight, recommended by GM.
Another thought, is this warning seen by you immediately after you start the car? If yes, it is normal for oil to take a second or two to build the proper pressure, particularly in cold weather. Where I am at, it is cold. Oil doesn't like to move when it is cold (like me) so it takes a bit of time to get up pressure (like me).
If this continues, you may want to have this problem looked at by a professional, as I said.
Thanks for your interest in FixYa.com
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