If an oil pressure sensor goes out, and the oil level is fine, can I still drive the truck without hurting the engine?


Asked by Jun 17, 2014 at 07:31 PM about the 2008 Chevrolet Silverado 1500 LT1 Crew Cab 4WD

Question type: General

Oil pressure dropped to zero. Oil is fine. No knocking noises. Sounds great!

27 Answers


Those trucks have bad pressure sensors. Youre probably ok. But replace the sensor just so you have a working gauge. Its easy.

15 of 15 people found this helpful.

Thank you Mark. I was told by a mechanic at a shop in Canon City, Co. today that I need to buy an intake manifold kit and leave the truck with him for at least a day. So, I don't need to purchase a special socket?

4 of 4 people found this helpful.

From your name, you may be a female, and as such, your getting taken by a mechanic. The sensor is removed by using a 1 and 1/16th socket ratchet wrench after pulling off the harness from the sensor. Replace the sensor and reconnect the harness. You're done. The sensor is near the rear of the engine on the top. Replacement sensors are listed from $43.00 to $19.00 on line, which may be the same at a good parts store. Find someone in another garage for a second opinion. Or do you have a father or good boyfriend or acquaintance that can do it for a beer?

7 of 7 people found this helpful.
Best Answer Mark helpful

Me again. I'm getting conflict answers on exactly where the oil pressure sensor is located on my truck. Some say by the oil filter and others say behind the engine. As it looks like I'm going to be changing this myself, I need all the advice I can get. I bought a 1 1/16 th deep socket for this also. Thank you in advance guys.

3 of 3 people found this helpful.

On line there is several articles on how to change the sensor, and they state it is on the top rear of the engine on the passenger side. type, "change oil pressure sensor on 2008 Silverado". Find a wire loom on the top of the engine and follow it. Also go on line and you will will where it is, what the loom looks like, and how to change it. Have fun, good luck. Wear mechanic gloves to protect the nail polish. Do this and your a gear head for sure. This way you can enjoy the beer yourself and not share. Plus you'll feel good.

5 of 5 people found this helpful.

I am an official gear head guys! Let me tell ya...being a 6' tall, 51yr. Old woman, it wasn't easy fitting all of me under the hood, but I "Got 'Er Done" as they say. Lol Couldn't be happier! I sincerely thank you for your help.

2 of 2 people found this helpful.

So it's a fix? Back top? One beer? Clean finger nails? Glad to be of assistance. Ride on. Picture of my Grandson and my first place car he helped get ready.

4 of 4 people found this helpful.

It is fixed. Back top, dirty nails, but intact. Sweet car! Congratulations on the win. Proud moment with your Grandson. Priceless! I have two Grandaughters, and although they laughed at me today and wondered how I got up into the engine compartment, they learned a valuable lesson that I hope they can keep with them through life. They can always depend on themselves.


I had same problem,I visited my box so they said i should not drive. Then i bought new oil pressure sensor and also installed electrical oil pressure gauge.for more information you can visit http://caroilpressure.com/ and pick right one part for your truck.

1 of 1 people found this helpful.

Can I drive the truck 11 hours with out hurting the engine

3 of 3 people found this helpful.

James, if only the gauge is reading zero, and all other tests indicate you have oil pressure, it is a gamble, but yes. I'd change the sensor and make sure it is reading correctly first. If you start out on your journey and you hear strange noises from the engine, like the valve guides are knocking, shut off the engine and tow it to the nearest repair facility. Same as if your temp gauge read other red line or no temp at all. Wouldn't you want to know how it really is doing? I started driving 50s cars that really are no match to today's cars/trucks as far as reliability and longevity, so constant reading of the gauges was a must. I never got rid of that habit. If my oil gauge or water gauge are reading off normal ranges, I want to know why. Why the 11 hour drive? Need to get it to a place you trust for repair? A local garage repair is far less expensive than replacing an entire engine and sensor about 7 hours into the drive. The gamble is yours. Make sure it is just a bad sensor. Don't forget the plastic Jesus for the dashboard of your car. That way you won't care if it rains or freezes as long as you have your plastic Jesus ....

4 of 4 people found this helpful.

I have changed my oil pressure senor 2 times in the last month. My mechanic said it might be a short somewhere. Another mechanic told me that I might need to switch out my oil pump and replace the sensor again. What do you advise I do.

5 of 5 people found this helpful.

I forget what the answer was that was submitted by a knowledgable GM Tech, but he said there was something in the oil pressure system that gets plugged and needs to be cleaned out. Go back a month or two and the answer is there. It's not the sensor, or pump. Sorry I thought I saved it, but can't find it. Perhaps if he is looking at this post, he'll post his advice again. It means pulling the pan off, but it will solve the issue.

5 of 5 people found this helpful.

Ya, there should be a screen that needs to be cleaned or replaced, my mechanic friend said your wasting your time replacing the sensor without addressing the screen also.

im having the same issue different situation my oil pressure reads 0 at idle and 22 when driving ive replaced my oil pressure sensor and still have same problem i looked for the screen underneath the switch and no screen was presence so why is my pressure still reading 0 ......side note im pretty handy around the motor but this has me puzzled my last thought was placing a oil screen in it but wasnt sure how that would help my pressure my engine isnt knocking or making any funny noises its a 2005 lq9 6.0l motor from a escalade i dropped it into an 86 monte carlo ss


Guru9zCNB, I went ahead and took my truck to the dealer. $200 later just for an answer they said its the plug that goes to the oil sensing unit that has to be replaced. The service guy said that the plug must of got oil in it from the first oil sending unit that was actually bad. That's why I am getting a faulty reading on my oil gauge. I didn't let them fix it cause they wanted to charge me $965. Hope this helps. If you replace the plug. Please let me know if it works

2 of 2 people found this helpful.

I am pissed I spent $ on oil change and it is the sensor messed up. If the oil sensor is disconnected and fluids are all good with this effect the motor it's self 01 expedition 5.4 Triton engine

Idk if it's going to hurt the engine if I run it without the connection of the sensor


Guru9198K, if it is the sensor, fine. I'd not gamble on having an engine seize up on me. The cost of a rebuilt or new engine is far greater than going to a shop and having the pressure tested and having a new sensor put on. Sitting here is hard to do any tests, the informations only as good at the person writing the fact of what is wrong. This blog seems to be getting a lot of oil pressure / sensor issues. GM sells millions of vehicles, and what we see is but a spect of people with issues. Mechanical items wear our, are bad from the get go, or just go ka-put. There are other locations to hook up a sensor to test the pressure. Perhaps spending even a couple of bills is a lot less than 3-7 grand for an engine replacement.

1 of 1 people found this helpful.

I have a 2009 Tahoe. Engine light came on and code read oil pressure sensor, which i kinda figured by looking at my oil pressure gauge stay at 0 and handy dandy google. I think I have heard a "knocking" that sounds more like a ticking to me. I am a woman and i know absolutely nothing about these things. I want to have it replaced but i need to work a few more weeks to be able to save the money and pay bills as well. It is the winter months and its cold here in Tennessee. My question is, If i drive my car and keep the oil at the correct level can I drive for possibly 2 more weeks before having the sensor replaced. I mean a sensor only allows you to be able to read your oil pressure gauge so #1 why is the pressure gauge so important and #2 if the sensor is out that doesn't necessarily mean its not getting oil pressure right? Thanks in advance for all answers and help.

2 of 2 people found this helpful.

I've had these same problems, changed my sensor and oil pressure sensor filter which is located under the sensor when you take it out. Still has low pressure. Also in the past my other Silverado had the same issue but come yo find out my oil pump pick up tube seal was bad which caused the low pressure


jamon, Funny that such a little thing can cause such major issues and destroy a beautiful running machine

1 of 1 people found this helpful.

John, now I think I have the same issue with my 2010. I'd rather it be that than to be an oil pump

I have the same problem as HeavyChevy. I have a 2008 Tahoe 5.3 (flex-fuel) that has an oil pressure reading of 0. The truck has 170,000 miles and runs like a champ, but this just happened. I am assuming it is the oil pressure sensor since I have about 70% oil remaining in the vehicle since I changed the oil about 3 weeks ago. Am I able to drive the truck (without any issues) until I can get to the weekend to have time to replace the part? I don't like to deal with mechanics unless it's a problem I know I have no chance of fixing right.


I drove mine for like 6 months. Until I got it repaired. Just as long as you know you have oil you are good. Just make sure you don't hear any knocking

1 of 1 people found this helpful.

Thanks guys! I bought the part today and I will have it fixed this weekend. The youtube videos are pretty helpful.


I had the same problem with the oil pressure gauge going flat (0) I read articles to see what it could be and was told it was it was by the oil filter. It is not it's on top/back of the engine where the YouTube videos show. My advise is when you take the sensor off take the screen filter that is located were the sensor goes and clean it or buy a new one. You will need a 1 1/16 socket, extention and a swivel. Took 20 minutes to change it out and it's working perfect again.

1 of 1 people found this helpful.

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