iboughtatahoe23
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Tahoe LT low oil pressure?
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First of all, the gauge is not an absolute. A mechanical gauge is best to compare with but a PITA to hook up. Try a new sensor to start with for a cheap fix. You are gonna have a screen to deal with as well on this NNBS rig. See a few, not just one, you tube video to see what I mean.
If I did not say it already, welcome to the forum.
If I did not say it already, welcome to the forum.
Read through the sticky and let us know if you have any further questions. https://www.tahoeyukonforum.com/thr...ronicles-of-low-oil-pressure-by-07burb.62826/
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iboughtatahoe23
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People were telling me oil pressure sensor. But after reading this I’m not sure now? I’m thinking I should do an oil change just to be safe, a new and good quality filter. I’m not sure if additives would be necessary.
I also don’t have any tune, it’s All stock. I can check the sensor filter as well. But it was running normal this morning despite the weather
So, in my experience here and on my own trucks, the oil pressure sensor is the most likely first cause of low oil pressure indications on these engines with AFM, as the filter screen on the sensor gets clogged and only AFM engines have that screen. The second most common cause seems to be oil filter choice. The third most common cause seems to be the oil pump pickup tube o-ring, and the fourth most common cause is probably a tie between a sticking oil pressure relief valve in the pan, a damaged oil pump (e.g. lifter came apart and spread shrapnel through the pump), or worn cam bearings.
I think you have a solid plan. Start with the simplest first, which is a fresh oil change using a known good filter. I use a Wix 57045. And then go from there.
I think you have a solid plan. Start with the simplest first, which is a fresh oil change using a known good filter. I use a Wix 57045. And then go from there.
I have a 2020 yukon slt same issue had 67,000 miles. Engine replaced. Dealer replaced engine 2 days later check engine pops up again same issue. They said it was an issue with the wire harness. "Maybe got pinched ironically" but I was suppose to get a phone call this morning nothing yet. I'm sure they didn't find the issue. I will keep you updated.
Update: still at the dealer they replaced the ECM waiting for them to call me today idk if thays going to happen.
Update: still at the dealer they replaced the ECM waiting for them to call me today idk if thays going to happen.
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That's an expensive parts cannon they have there. A proper diagnosis using established and well-documented methods would have been way cheaper. Hope they can get you squared away.
Dustin Jackson
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Ahh shit here we go again
Start with an oil change and if you are still not satisfied I would escalate it from there.
Start with an oil change and if you are still not satisfied I would escalate it from there.
ny_summit
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Do you need to add more oil when using a larger filter?
Based on your pics it's 2007-2014. What is the year ans miles? If you're closer to the earlier years, I agree with @OR VietVet and @Geotrash in what they said. I'd also add if it's older, high miles, or hot climate you might be in the "I need a new oil pump o-ring club."
Nope.
Anytime you use a bigger filter you need to add oil accordingly. I have a longer filter I use for my rig because it has more filter element for my system. I have to add about 1/4 quart for the difference. Does it really mean anything for that extra filter size difference for the oil level? Maybe not but I just have to have it right on the money for the oil level.
Technically, you're correct but in practice I haven't needed to. Mine is right up at the full line on the dipstick with the larger filter and the usual 6 quarts. In other words, the difference is so little on the dipstick as makes no difference.
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iboughtatahoe23
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High miles. 165k and I live in Midwest. Usually cold a lot. Haven’t changed oil since got it from dealership. They said they did. But I doubt it. I don’t really know how to read dipsticks. It looks fine to me from just looking at it. No leaking underneath.
Trey Hardy
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I’ve had to change 3 oil sensor screens on my Tahoe and 2 for friends it gums up and would throw low oil pressure warnings
It’s located on the back driver side of the intake manifold and it’s a pita to do it the first time until you get it figured out
Also got to do it all by feel as you can’t see back there
Thanks. Yeah they said they replaced the ECM so lets see if they give me a call today
MidwestMike
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2014 with about 90k on it. Replaced the sensor and screen 2 years ago, had the issue again.
Ordered the parts and then did an oil change while waiting.
I still can't believe it but that oil change was the fix the second time around.
(I never have easy fixes...)
Ordered the parts and then did an oil change while waiting.
I still can't believe it but that oil change was the fix the second time around.
(I never have easy fixes...)
FrenchUSFan
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I have got same problem and solve it by changing oil (Valvoline 5W30 high mileage maxlife) and filter (ACDelco UPF48R). Now I have 25PSI at idle hot and 35-40PSI while driving
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