Chevrolet/GMC 6.6L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-16504481) - 2023 - CRC - 9/26/22
Vehicle Care 47
1. Remote Negative (−) Terminal
2. Remote Positive (+) Terminal
3. Battery
4. Engine Air Cleaner/Filter
5. Engine Fan (Out of View)
6. Engine Oil Fill Cap
7. Engine Oil Dipstick
8. Auxiliary Battery
9. Low Temperature Cooling Circuit Coolant
Reservoir and Pressure Cap
10. Brake Fluid Reservoir
11. Engine Compartment Fuse Block
12. Engine Coolant Surge Tank and
Pressure Cap
13. Auxiliary Fuse Block
14. Windshield Washer Fluid Reservoir
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” in the
owner’s manual.
.
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 0 46 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.
If a low oil Driver Information Center (DIC)
message 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.
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