oil dipstick GMC YUKON 2018 Owner's Manual

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Vehicle Care 285
1. Positive (+) Terminal. SeeJump Starting - North America
0356.
2. Battery - North America 0303.
3. Coolant Surge Tank and Pressure Cap. See Cooling
System 0295.
4. Engine Air Cleaner/Filter 0294.
5. Automatic Transmission Dipstick. See “How to Check
Automatic Transmission Fluid”
under Automatic Transmission
Fluid (6 Speed Transmission)
0 290 orAutomatic
Transmission Fluid (8 and 10
Speed Transmission) 0293. 6. Remote Negative (–) Location
(Out of View). See Jump
Starting - North America 0356.
7. Engine Cooling Fans (Out of View). See Cooling System
0 295.
8. Engine Oil Fill Cap. See “When
to Add Engine Oil” under
Engine Oil 0287.
9. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil 0287. 10. Windshield Washer Fluid
Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 300.
11. Brake Fluid Reservoir. See Brake Fluid 0302.
12. Engine Compartment Fuse
Block 0314.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Vehicle Care 287
1. Positive (+) Terminal. SeeJump Starting - North America
0356.
2. Battery - North America 0303.
3. Coolant Surge Tank and Pressure Cap. See Cooling
System 0295.
4. Engine Air Cleaner/Filter 0294.
5. Remote Negative (–) Location (Out of View). See Jump
Starting - North America 0356.
6. Engine Cooling Fans (Out of View). See Cooling System
0 295.
7. Engine Oil Fill Cap. See “When
to Add Engine Oil” under
Engine Oil 0287.
8. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil 0287.
9. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 300.
10. Brake Fluid Reservoir. See Brake Fluid 0302. 11.
Engine Compartment Fuse
Block 0314.
Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
. Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0289.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
If equipped, the ENGINE OIL LOW
ADD OIL message displays when
the engine oil level may be too low.
Check the oil level before filling to
the recommended level. If the oil is
not low and this message remains
on, see your dealer.
Check the engine oil level regularly,
every 650 km (400 mi), especially
prior to a long trip. The engine oil
dipstick handle is a loop. See
Engine Compartment Overview
0284 for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
Follow these guidelines:
. To get an accurate reading, park
the vehicle on level ground.
Check the engine oil level after
the engine has been off for at
least two hours. Checking the

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
288 Vehicle Care
engine oil level on steep grades
or too soon after engine shutoff
can result in incorrect readings.
Accuracy improves when
checking a cold engine prior to
starting. Remove the dipstick
and check the level.
. If unable to wait two hours, the
engine must be off for at least
15 minutes if the engine is
warm, or at least 30 minutes if
the engine is not warm. Pull out
the dipstick, wipe it with a clean
paper towel or cloth, then push it
back in all the way. Remove it
again, keeping the tip down, and
check the level.
When to Add Engine Oil
If the oil is below the cross-hatched
area at the tip of the dipstick and
the engine has been off for at least
15 minutes, add 1 L (1 qt) of the
recommended oil and then recheck
the level. See “Selecting the Right
Engine Oil” later in this section for
an explanation of what kind of oil to
use. For engine oil crankcase
capacity, see Capacities and
Specifications 0389.
Caution
Do not add too much oil. Oil
levels above or below the
acceptable operating range
shown on the dipstick are harmful
to the engine. If you find that you
have an oil level above the
operating range, i.e., the engine
has so much oil that the oil level
gets above the cross-hatched
area that shows the proper
operating range, the engine could
be damaged. You should drain
out the excess oil or limit driving
(Continued)
Caution (Continued)
of the vehicle and seek a service
professional to remove the
excess amount of oil.
See Engine Compartment Overview
0 284 for the location of the engine
oil fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back in when through.
Selecting the Right Engine Oil
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade.
See Recommended Fluids and
Lubricants 0384.
Specification
Ask for and use engine oils that
meet the dexos1 specification.