Engine Oil - GMC Denali 2004 Owner's Manual

A. Engine Air Cleaner/Filter. See Engine Air
Cleaner/Filter on page 5-16 .
B. Coolant Surge Tank. See Engine Coolant on
page 5-21 .
C. Air Cleaner/Filter Restriction Indicator. See Engine
Air Cleaner/Filter on page 5-16 .
D. Engine Oil Dipstick. See Engine Oil on page 5-10 .
E. Engine Oil Fill Cap. See Engine Oil on page 5-10 .
F. Automatic Transmission Dipstick. See Automatic
Transmission Fluid on page 5-18 .
G. Fan. See Cooling System on page 5-28 .
H. Remote Negative (−) Terminal (GND). See Jump
Starting on page 5-41 .
I. Remote Positive (+) Terminal. See Jump Starting on
page 5-41 .
J. Power Steering Fluid Reservoir. See Power Steering
Fluid on page 5-34 .
K. Brake Fluid Reservoir. See Brakes on page 5-36 .
L. Underhood Fuse Block. See Fuses and Circuit
Breakers on page 5-105 .
M. Battery. See Battery on page 5-40 .
N. Windshield Washer Fluid Reservoir. See Windshield
Washer Fluid on page 5-35 .

Engine Oil

If the CHECK OIL LEVEL light appears on the
instrument cluster, it means you need to check your
engine oil level right away. For more information,
see "CHECK OIL LEVEL" under DIC Warnings and
Messages on page 3-57 .
You should check your engine oil level regularly; this is
an added reminder.
Checking Engine Oil
It is a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil
must be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop. See
Engine Compartment Overview on page 5-10 for
the location of the engine oil dipstick.
Turn off the engine and give the oil several minutes to
drain back into the oil pan. If you don't, the oil
dipstick might not show the actual level.
Pull out the dipstick and clean it with a paper towel or
cloth, then push it back in all the way. Remove it again,
keeping the tip down, and check the level.
5-11