The check oil level light came om in my 2000 z71,its got 89000 on the clock.When I checked it it was barely showing on the dipstick.The truck has never used oil,changed every 3000 miles,what the f@$%,any opinions?

 

its your valve stem seals are probley gone, if there is no oil on the ground anywhere, have you done anything to the motor?

 

Also check and see how much oil is being sucked through the PCV valve...if the hose to the PCV is full of oil, you could try swapping in the fixed orifice style PCV or getting a catch can...

 

Does it smoke when you first start up? That is how you tell if your valve seals are shot. I wouldn't think that would use up very much oil though.

 

Bad valve seals can cause SEVERE oil usage.....I've seen a motor with bad valve seals use a quart of oil every 200 miles, it's kind of suprising just how much oil can find it's way down the valve stem when the seals go bad

 

Truck doesnt smoke when i first crank it up.It had 70,000mi when Ibought it Ihave put 20,000 HARD miles on the truck.Iwill check the pvc valve,hope thats it.Thanks guys

 

Then I would say it's not your valve seals. Based on what I know about leaking valve seals. Don't believe it could be happening, especially that bad, without any smoke evidence. I'd look to the PCV system.

 

Pulled the throttle body off and didnt see any excessive oil inside the intake,also pulled the pvc valve out and no oil in the tube to the intake,The truck doesnt smoke at all. 89,000 and rings shot? btw The truck is bone stock I have had it over 2 years and never had to turn a wrench on it.

 

Does it smoke while running ??

If this is something that just started and you've never seen any indication of oil usage I'd be looking for a leak.....

 

No its never smoked at all,cold start or hot idling.