Checking Things Under The Hood; Engine Oil - GMC 2010 T-Series Owner's Manual

Checking Things Under
the Hood

Engine Oil

Checking Engine Oil
It is a good idea to check the engine oil level at each
fuel fill.
5-16
The engine oil dipstick is
located behind the cab on
the driver side of the
vehicle. It can be reached
without tilting the cab.
In order to get an accurate reading, the engine should
be at normal operating temperature, so that the oil is
warm, and the vehicle must be on level ground.
1. If the engine is at normal operating temperature
and the oil is warm, turn off the engine and allow at
least five minutes for the oil to drain back into the
oil pan. If this is not done, the oil dipstick might not
show the actual level.
If the engine has not been run long enough to
bring it up to normal operating temperature and the
oil is cool, turn off the engine and allow 30 minutes
for the oil to drain back into the oil pan. If this is not
done, the oil dipstick might not show the actual
level.
2. Pull out the dipstick and clean it with a paper towel
or a cloth, then push it back in all the way.
3. Remove the dipstick again, keeping the tip down,
and check the oil level.