02 Sierra - no oil pressure - Other Cars Forum

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02 Sierra - no oil pressure
Thursday, January 01, 2009 11:44 AM
I dropped my truck off at the shop Tuesday night for an oil change. Told the mechanic I would pic it up Thursday when I got back in town. They are closed since it is new year's day though, so no one was there.

I got in the truck, checked my oil chance sticker, and it was new, so I knew he was done the oil chance, so I started it up. The info center says, "check engine oil pressure" so I look at the gauge and it is 0. I get out, and pop the hood, pull the dipstick, and it is full. I shut it off, and went home with the GF in the GTP.

I know I am going to call him tomorrow about this, but just for my own curiosity. What could be going on here? It was fine, went in for an oil change, and now it has no pressure, but is full or oil. It started fine, would it even start if it really had no pressure? It is damn cold here! Is it likely a gauge or a sensor? Or something more serious?






**there is only one true love in my life... and my girlfriend has learned to live with it**

Re: 02 Sierra - no oil pressure
Thursday, January 01, 2009 2:15 PM
my immediate guess would be the sensor has an issue.
Re: 02 Sierra - no oil pressure
Thursday, January 01, 2009 6:40 PM
Was there a knock or tapping sound? If not like said before might be a sensor issue.

How long did you leave it on?

Sometimes it takes about 5 seconds for the gauge to move, especailly when its cold, or just had an oil change.
Re: 02 Sierra - no oil pressure
Thursday, January 01, 2009 6:51 PM
going off my first comment.

if you didnt hear any grinding or anything then you should have had some oil getting around there, which would have pressure to an extent...leading me to believe the sensor may have been misbehaving.
Re: 02 Sierra - no oil pressure
Thursday, January 01, 2009 8:24 PM
Nope, no strange sounds at all. The gauge tried to go up a little, which turned the "check engine oil pressure" message off, at one point, then dropped back to 0, and the message came back on.

I am calling him first thing in the morning anyhow. I doubt he even knows, or else, why didn't he call me if he thought something was wrong?





**there is only one true love in my life... and my girlfriend has learned to live with it**
Re: 02 Sierra - no oil pressure
Thursday, January 01, 2009 8:29 PM
How long did you leave it running before you shut it off? Also how cold is it by you?



Re: 02 Sierra - no oil pressure
Friday, January 02, 2009 6:19 AM
I didn't leave it very long at all many 30 seconds to 1 minute. It was around -25c yesterday.

I just called the mechanic, and that's what he said. In the cold it sometimes takes a while for the sensor to warm up, and take a reading. He is going to start it and let it run for a while and see what happens.






**there is only one true love in my life... and my girlfriend has learned to live with it**
Re: 02 Sierra - no oil pressure
Friday, January 02, 2009 7:48 AM
Doesn't oil turn into a sludge of sorts at that temperature? I say let it warm up to full operating temp and see what the reading is.



Re: 02 Sierra - no oil pressure
Friday, January 02, 2009 7:58 AM
Pull the cluster fuse, wait 30 seconds,put it back in, and try again. Could just be the cluster.



Re: 02 Sierra - no oil pressure
Friday, January 02, 2009 8:01 AM
Mechanic said he would call if something was wrong after he let it warm up. I am assuming nothing is wrong since I have not heard anything and will be going to get it soon.

I know I over reacted a little, but not being so mechanically incline, I would rather leave it at the shop overnight, then drive it home on the "it is probably fine" mindset.





**there is only one true love in my life... and my girlfriend has learned to live with it**
Re: 02 Sierra - no oil pressure
Friday, January 02, 2009 2:51 PM
Ya, it's fine. picked it up earlier today. Something must have been frozen.





**there is only one true love in my life... and my girlfriend has learned to live with it**

Re: 02 Sierra - no oil pressure
Friday, January 02, 2009 3:03 PM
sweet,

better to be safe then sorry.
Re: 02 Sierra - no oil pressure
Saturday, January 03, 2009 3:24 PM
them cold temps make cars do funny things.

Glad it is ok. Best to be on the safe side like you did.


(ON my 96z24 when i had it, there was a oil sensor in the pan, and them sensors are known to go bad. Well one day it came on and i freaked, but all the oil was in there. Did some research and realized the sensor goes bad and GM stopped using that sensor in 97).







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