moes04silverado

iTrader: (2)

I Have A 2002 Rclb With A 8.1l In It. Having A Problem With It Using/burnig Oil. I Dont Notice It Smoking At All But The "check Engine Oil Level" Light Comes On About Halfway Through An Oil Change (1500-2000 Miles Or So). Any Ideas??

mason110

rings? but if your not seeing smoke im not sure, obviousley its burning oil some how some way. no leaks?

moes04silverado

iTrader: (2)

No Leaks That I Can See Anyway...i Crawled All Through And Around That Motor And Found Nothing...i Cant Understand It...it Only Has 30k On It!!

01Blue4.8

my dad has an 8.1 in his avalanche that uses a lot of oil. it runs fine though

moes04silverado

iTrader: (2)

Oh Dont Get Me Wrong The Truck Runs Like A Champ...lots Of Power That Is For Sure....just Seems To Go Through Oil....cant Figure Out Were It Goes... I Dont Know...weird.

dry_kill

iTrader: (12)

My oil light comes on all the time, sometimes a day or 2 after I change my oil, nothings leaking and I have oil, u just gotta turn the key all the way before the car turns on then press the gas pedal 3 times and the light will go off, I just go by my speedometer, I don't pay attention to that light anymore

mason110

is it low on the stick? or just low oil light?

Torque_Wrench

iTrader: (13)

Excessive Oil Consumption - keywords bolt gasket head intake #PIP3193B - (Jul 14, 2005)
Excessive Oil Consumption
2002-2005 Chevrolet Avalanche
2001-2005 Chevrolet Silverado, Suburban
2003-2005 Chevrolet Kodiak
2001-2005 GMC Sierra, Yukon XL
2003-2005 GMC TopKick
Equipped with 8.1 engine
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Higher than expected oil consumption even after the intake bolts were replaced per Bulletin 02-06-01-035.
Recommendation/Instructions:
Since this type of engine may be used under various load conditions, the acceptable rate of oil consumption is 1 quart (.946L) of oil every 100 gallons (379L) of gasoline. If the intake bolts were replaced per 02-06-01-035 and the excessive oil consumption still exists, replace the intake gaskets with part number 89017539. Use current SI instructions for intake gasket replacement and torque procedures.
Mid year 2004 changes to the cylinder head and intake gaskets were made, making a more robust seal between the cylinder head and the intake manifold. Early 2004 8.1L engines will accept the updated gaskets discussed in this PI, 89017539. The late 2004 8.1L engines that have the updated head and intake gaskets do not require a updated gasket. The differences in the engine are as follows.
2001 to 2004 1/2 8.1L L18 engines will accept the gasket Part Number 89017539.
These engines can be identified by inspecting the intake bolts or the intake gasket.

• The intake manifold bolts will be silver in color and measure 65mm long.

• The intake gasket will be flat with no type of locator that engage to the cylinder head
2004 1/2 to current 8.1L L18 engines will not accept gasket Part Number 89017539.
These engines can also be identified by inspecting the intake bolts or the intake gasket

• The intake manifold bolts are black in color and measure 72mm long.

• The intake gaskets are stamped seal with locating Dowels that fit into the counter bored bolt holes in the cylinder head for the intake bolts.

• Due to the more robust intake seal be sure to complete normal oil consumption testing. If oil consumption is excessive (more then 1 quart (.946L) of oil every 100 gallons (379L) of gasoline), complete SI diagnostics for oil consumption

• If a intake gasket is found to be leaking, use the most current parts catalog listings.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed

THANKS...AND GOOD DAY

mason110

wow there you go

Neil 6.0

There was a TSB regarding oil burning 8.1's. It involves tightening the intake manifold bolts to the correct torque specs and I think it says to use locktite on them too. That was a couple years ago, there may be a new way to do it now. Someone here may be able to pull up the TSB for you.

For the most part though, most big blocks do burn a little oil, it's just the nature of the beast.