Engine Oil - GMC 2015 Sierra Denali Owner's Manual

10-8 Vehicle Care
1. Positive (+) Terminal. See Jump
Starting on page 10-87.
2. Battery on page 10-29.
3. Coolant Surge Tank and
Pressure Cap. See Cooling
System on page 10-17.
4. Engine Air Cleaner/Filter on
page 10-15.
5. Automatic Transmission
Dipstick. See How to Check the
Automatic Transmission Fluid
under Automatic Transmission
Fluid (6 Speed Transmission) on
page 10-12 or Automatic
Transmission Fluid (8 Speed
Transmission) on page 10-15.
6. Engine Oil Dipstick. See
Checking Engine Oil under
Engine Oil on page 10-8.
7. Engine Oil Fill Cap. See When
to Add Engine Oil under Engine
Oil on page 10-8.
8. Engine Cooling Fan (Out of
View). See Cooling System on
page 10-17.
9. Remote Negative ( ) Location.
See Jump Starting on
page 10-87.
10. Power Steering Fluid
Reservoir. See Power Steering
Fluid (1500 Series) on
page 10-24 or Power Steering
Fluid (2500/3500 Series) on
page 10-24.
11. Windshield Washer Fluid
Reservoir. See Adding Washer
Fluid under Washer Fluid on
page 10-25.
12. Brake Fluid Reservoir. See
Brake Fluid on page 10-27.
13. Auxiliary Battery (If Equipped).
See Battery on page 10-29.
14. Engine Compartment Fuse
Block on page 10-41.
If the vehicle has a diesel engine
and/or an Allison Transmission, see
the Duramax diesel supplement.

Engine Oil

For 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:
Always 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 on page 10-11.
Always dispose of engine oil
properly. See What to Do with
Used Oil in this section.