GMC Yukon 2025 - Engine Oil

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-17942154) - 2025
320 Vehicle Care
1. Remote Negative (–) Location. See J
u
mp
Starting - North America 3380.
2. Positive (+) Terminal (Under Cover). See
Jump Starting - North America 3380.
3.
Battery. See Battery - North America 3332.
4. Fuse Block. Engine Compartment Fuse Block
3339.
5. Engine Oil Dipstick. See “Checking Engine
Oil” under Engine Oil 3320.
6. Engine Cooling Fans (Out of View). See
Cooling System 3324.
7. Engine Oil Fill Cap. See “When to Add Engine
Oil” under Engine Oil 3320.
8. Coolant Surge Tank and Pressure Cap. See
Cooling System 3324.
9. Engine Air Cleaner Assembly. See Engine Air
Cleaner/Filter 3323.
10.
Brake Fluid Reservoir. See Brake Fluid 3 331.
11. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” under Washer Fluid
3329.
Engine Oil
Fo
r diesel engine vehicles, see “Engine Oil” in
the Duramax diesel supplement.
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 3322.
•
Always dispose of engine oil properly. See
“What to Do with Used Oil” in this section.
Checking Engine Oil
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 3317 for the location.
{ Warning
T
he engine oil dipstick handle may be hot;
it
could burn you. Use atowel or glove to
touch the dipstick handle.
If alow oil Driver Information Center (DIC)
me
ssage displays, check the oil level.
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 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.