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Low Oil Sending Unit Problem

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Old Aug 5, 2023 | 06:35 PM
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Default Low Oil Sending Unit Problem

Is there anything special you are supposed to do when installing a new oil level sending unit? I know the black dot is supposed to be on top, but how exactly are you supposed to ensure it stays on top while threading it into the oil pan? Dealing with a new sensor reading "low oil" when the pan is full. It isn't an issue with the gauge or the wiring - testing for continuity across the sensor itself when it was stil in the pan shows the sensor contacts are in fact closed as if it had low oil....

Or maybe it just does not like 15w50? Any thoughts?
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Old Aug 5, 2023 | 06:40 PM
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What brand of oil level sender did you get?

Last edited by LannyL81; Aug 5, 2023 at 09:08 PM.
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Old Aug 5, 2023 | 06:43 PM
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IMHO, ANYTHING electronic that needs replacing on a C5, except the oil PRESSURE sender, should use genuine GM Parts. Lifter trays are another GM only part... .
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Old Aug 5, 2023 | 06:45 PM
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The op was asking about the low oil sensor, not about the oil pressure sensor.
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Old Aug 5, 2023 | 06:49 PM
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Originally Posted by mmartinez
The op was asking about the low oil sensor, not about the oil pressure sensor.
I understand that. I was merely stating he should stick to all GM sending units EXCEPT the pressure sender. The low oil level sender being one of them, so it too should be replaced by a genuine GM sender. There was a question on whether he bought a genuine GM level sender, or not.
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Old Aug 5, 2023 | 07:50 PM
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My reply was not directed at you, somebody else asked what brand of oil pressure sensor the op had bought when in fact it was a low oil sensor.
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Old Aug 5, 2023 | 09:10 PM
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I have corrected my posting....typed oil pressure for some reason.
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Old Aug 6, 2023 | 09:00 AM
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It was an AC Delco oil level sending unit.

Normally I would not care so much because I know there is oil in it...BUT given the heavy modifications to the car, the LARGE oil cooler, 3x larger oil filter, high volume pump, I really want it working to make sure I have enough oil in the pan and am not pumping it dry at RPM.
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Old Aug 6, 2023 | 09:55 AM
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3x “larger” filter? What filter? Should still be the GM C5 sized filter
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Old Aug 6, 2023 | 11:18 AM
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Originally Posted by dskinsler83
3x “larger” filter? What filter? Should still be the GM C5 sized filter
I remote mounted the filter and went significantly larger....







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Old Aug 7, 2023 | 05:03 PM
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Originally Posted by HardcoreABN
I remote mounted the filter and went significantly larger....







A filter like that......When you need to change it, you'll have to buy 8 quarts of oil!!! Seriously though, I've always thought the LS engines should use a larger filter. But they go hundreds of thousands of miles with the stock size, so who knows? I like not getting under the car to change the filter. Nice work......
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Old Aug 7, 2023 | 05:24 PM
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Oh, I still have to get under the car. That is inside the driver front fender. I figure my whole system is about 9-10 quarts anyway.
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