Chevrolet kodiak 2004 Owner's Manual page 233

When to Add Engine Oil
If the oil is at or below the cross-hatched area at the tip
of the dipstick for the 6.6L V8 (LB7/LLY) engines,
then you will need to add at least two quarts of oil. If the
oil is at or below the A mark for the 7.8L L6 (LG4)
engine, then you will need to add at least one quart of
oil. But you must use the right kind. This section explains
what kind of oil to use. For engine oil crankcase
capacity, see Capacities and Specifications on
page 5-93.
Notice: Do not add too much oil. If your engine has
so much oil that the oil level gets above the
cross-hatched area for the 6.6L V8 (LB7/LLY)
engines or above the F mark for the 7.8L L6 (LG4)
engine, your engine could be damaged.
6.6L V8 (LB7) Engine
Be sure to add enough oil to put the level somewhere in
the proper operating range. Push the dipstick all the
way back in when you' are through.
6.6L V8 (LLY) and 7.8L
L6 (LG4) Engines
5-27