2004 Chevy Silverado oil pressure gauge

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Electrical problem
2004 Chevy Silverado V8 Four Wheel Drive Automatic 82000 miles

I have a 2004 silverado with 82000 miles, and the oil pressure gauge will max all the way out, and will not return back in the off position, when you hit the key 8 times it will rest and then run normal for a while then it will do it again. I change the oil every 2800 to 3000 miles using valvoline 5w30 oil since I bought the truck new. When the guage is maxed out it wont throw a check engine light

Do you
have the same problem?
Saturday, December 1st, 2007 AT 3:21 PM

1 Reply

  • 1,498 POSTS

If the check engine light is on or when it's on, there is a code set in the computer. What is this code?
Do not assume that this is an electrical issue. It very well may be an oil pressure problem. Try changing the oil pressure sensor or test the actual oil pressure with a gauge that is independent of the sensor.
The fact that you change the oil regularly does not mean that the oil pressure should be good forever. Let me explain how oil pressure is made in your engine.
Oil pressure is NOT made by the oil pump. An oil pump is a positive volume pump, meaning it moves oil from one place to another in one direction. Oil pressure is made by the all the restrictions inside of the engine. Bearing clearences, oil passages, bends in the oil gallerys and lines, and the strength of the oil pressure releif valve spring are some examples of these restrictions.
If some dirt or a piece of hard carbon deposit is clogging up one of the many oil passages in your engine, this will create a higher than normal oil pressure; because this makes the path the oil follows smaller.
Ok, back to your problem. Change the oil pressure sensor to elliminate any question of an actual oil pressure problem. We'll take it from there. Let me know how you make out.

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Saturday, December 1st, 2007 AT 8:41 PM

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