Either the Oil Level sensor on the oil pan is bad, or something with the wires.
I installed a new oil level sensor last night, so I'm thinking the wires are bad. The wires that travel near the oil filter have oil on them....it's impossible not to spill oil since the filter is mounted at a strange angle.
There must be a short somewhere...so I guess I use a multimeter and check for proper ohms or volts? I'm not so adept at tracing electrical issues.
my guess would be there is a loose or broken wire (or something wrong in the connector) if you are still getting the same message. It seems like oil on the sensor would complete a circuit, keeping the light off. When there is an open (cut or loose wire) it would make the computer think there is not enough oil. I am not 100% sure how the sensors work, but since you replaced it already, and knowing how GM seemed to take shortcuts with the wiring, it wouldn't surprise me!
Posted: Mon Jan 31, 2011 11:05 pm Post subject: Reluctant Low Engine Oil message - Fixed
Changed oil again (Mobil 1 synthetic lasts a long time) and this time I noticed that one of the pigtail legs coming out of the oil level sensor was hanging on it's own, dohh. Got a new oil level sensor pigtail, re-wired it back in the conduit / loom and no more silly message. I guess its better late than never.
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