Question about 2003 Chevrolet Silverado 1500

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I have a 2003 silverado 1500, 2wd with the small V-8. 118+ miles. Today I put in some gas and immediately after that the oil psi shot to 80 and stayed for the 20 mile ride home. Oil was changed with 5W-30 and Fram filter less than 1400 miles ago?!?! No knocks or ticks. Engines sounds and runs like it always has...?!?! Thanks for the help!

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Check oil sensor it is probably coincedence that you fueled at the same time

Posted on Sep 09, 2010

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1 Answer

My 2003 silverado is running 80 lbs.oil preasure what should i do


need to hook a oil pressure gauge (tool) to it to actually see if it is running that high. if it is then if its a high mileage engine put a can of sea foam in the engine oil and run for 500-1000 miles. then change it and see where it gets you. pressure is resistance to flow. the only thing to cause it to get that high is tight oil clearances or a restricition in engine. this is a cheap try it solution. if the tool does not read that high replace the oil sending unit.

Apr 10, 2011 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

2003 1500 silverado 5.3l engine oil pressure gauge reads high and wil not reset to 0lbs. when engine is shut off. i have replaced the oil sending unit


The 2003 gm vehicles have a common problem within the instrument cluster panel. Each gage has a "stepper motor" soldered to the back side of the circuit board; and a very small shaft protroding through the circuit board with a needle for the gage attached . The stepper motors are about the size of a quarter in diameter with four terminals. They are small gearmotors. They do not have a spring return; so when they fail their needles do not return to home (0 psi for example or 0 miles/hour). You can find reputable repair shops online. One I know of in Minnesota is www.speedometerrepairguy.com. I bought the parts from him (on ebay) and soldered them myself but beware you need advanced soldering skills here not to mention a very good magnifying glass to inspect the solder joints. I hope this helps.
In my case the speedometer was hanging up in cold weather.
Replacing the stepper motors cured my troubles.

Jan 26, 2011 | 2003 Chevrolet Silverado 1500

1 Answer

Oil pressure gauge is reading 80 psi. I had the


The oil sending unit is located on the engine block behind the drivers cylinder head area.You have to climb up on the motor to see it cause it is hard to see behind the wiring harness.You may also want to purchase a new sending unit because it is very long and you might need to buy the sending unit socket to replace it.Hope this helps.Good luck.

Jul 20, 2010 | 2003 Chevrolet Silverado 1500

1 Answer

Oil gage buries all the way past high. After driving with it like that for a while, the truck engine konks out and will not start. Last time we waited on the side of road for 40 minutes and then it started...


Do you believe oil gage? Oil psi sensor can go bad. If PSI correct then is PCV valve clear?
I'm more inclined to think you have some kind of electrical problem, false gauge, ignition quits or fuel delivery problem. Extreme high oil PSI would blow out your engine seals, leaking oil everywhere. When you get high oil psi, does removing oil cap make it drop? Do you have good clean oil and filter?
When it quits do you have spark, fuel to delivery system? (throttle body or fuel inj) High oil psi shouldn't make truck hard to start. Baffling.

Mar 09, 2010 | 2005 Chevrolet Silverado

1 Answer

While driving the oil pressure gauge sits between 60 and 65 psi but when i get on the gas it shoots up to 80 psi. When idling it sits on 40 psi.


When the engine is idling, the oil pressure is reduced. At fast idle (such as highway speed) it in increases. This is considered normal. If it goes higher than 80 or lower than 40...have it checked out.

Feb 15, 2010 | 2001 Chevrolet Silverado 2500HD

2 Answers

WHERE IS THE OIL SENSOR LOCATED ON A 5.3 CHEVROLET SILVERADO LS 1500. MY OIL GAUGE WENT TO 80 PSI WHEN I STARTED IT UP. WOULD THERE BE SOMETHING ELSE WRONG OTHER THAN THE SENSOR.


these chevs are known for oil pressure switch going bad its located on theback right side of the engine it is replace able without having to remove anything u will need a mechanics mirror to see it

Jan 23, 2010 | 2003 Chevrolet Silverado 1500

1 Answer

Oil gauge goes straight to 80 when 2003 chevy is started.


Hi
have your oil replace with new and make sure it is the proper weight. In cold weather old oil gells up making thiker once it warms up the pressure will go down but is not protecting you engine.

Jan 11, 2010 | 2003 Chevrolet Silverado 1500

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