low oil light
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low oil light
My C4 has a new 350 engine out in by the PO. It runs like a top and is an incredible engine but they used an oil pan WITHOUT a low oil sensor. Oil pressure is great, and oil level is also really good. The car doesn’t burn or lose oil. That being said, the “low oil” light is on all the time and is super annoying.
Is there anyway to bypass this and turn this warning light off?
thanks!
Is there anyway to bypass this and turn this warning light off?
thanks!
Team Owner
Joined: Sep 2003
Posts: 25,393
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My C4 has a new 350 engine out in by the PO. It runs like a top and is an incredible engine but they used an oil pan WITHOUT a low oil sensor. Oil pressure is great, and oil level is also really good. The car doesn’t burn or lose oil. That being said, the “low oil” light is on all the time and is super annoying.
Is there anyway to bypass this and turn this warning light off?
thanks!
Is there anyway to bypass this and turn this warning light off?
thanks!
Do you have the correct year FSM for your car?
Last edited by WVZR-1; Apr 29, 2023 at 11:04 AM.
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What year? Easiest I'd think is to remove the bulb from the DIC, A '90 FSM seems inconclusive for bulb location and 'hints' NOT USED(I'm quite sure was) but for '91 and later it's in the DIC face. Is it an 'amber' lamp in the DIC? There's certainly ways to defeat it in the CCM harness. Is the connector still there and just dangling?
Do you have the correct year FSM for your car?
Do you have the correct year FSM for your car?
Team Owner
Joined: Sep 2003
Posts: 25,393
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Thread Starter
Instructor
Joined: Apr 2023
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Team Owner
Joined: Sep 2003
Posts: 25,393
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Thread Starter
Instructor
Joined: Apr 2023
Posts: 103
Likes: 7
Thread Starter
Instructor
Joined: Apr 2023
Posts: 103
Likes: 7
There are no DTCs associated with the Low Oil light. The routine for the Low Oil check involves time since the last engine run, oil temperature at the last engine run, and time since engine start. When all of these are met, the CCM looks at the state of the oil level sensor. If the sensor contacts are closed (ie the wires connected together) the light will not be lit.
AFAIK there are no Module 1 DTCs for CCM-controlled "light bulbs". There is a code (25? I didn't look it up) for the Courtesy Light Relay coil, which uses strategy similar to what would be used for a "light bulb", but this is the only controlled device monitored.
I'm almost positive that if the OP connects the two wires to each other, the Low Oil light will never come on again. And there will be no SYS message, either.
AFAIK there are no Module 1 DTCs for CCM-controlled "light bulbs". There is a code (25? I didn't look it up) for the Courtesy Light Relay coil, which uses strategy similar to what would be used for a "light bulb", but this is the only controlled device monitored.
I'm almost positive that if the OP connects the two wires to each other, the Low Oil light will never come on again. And there will be no SYS message, either.
im going to see if i can find the sensor and try this. If not…sticker time
Melting Slicks
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From: Sligo PA
Any of the low oil level sensors I have ever messed with were always just a basic float switch. In the newer V8's (LS3 and up) GM put a thermistor in the float switch so it could also read oil temp. So you should be able to just connect the two wires together that went to the old sensor and the light should go out. If there is only one wire then connect it to ground.
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Any of the low oil level sensors I have ever messed with were always just a basic float switch. In the newer V8's (LS3 and up) GM put a thermistor in the float switch so it could also read oil temp. So you should be able to just connect the two wires together that went to the old sensor and the light should go out. If there is only one wire then connect it to ground.
Melting Slicks
Joined: Mar 2002
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From: Sligo PA
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Thread Starter
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