At Each Fuel Fill; At Least Once A Month - GMC Yukon Denalid Owner's Manual

At Each Fuel Fill

It is important to perform these underhood checks
at each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper
oil if necessary. See Engine Oil on page 432 for
further details.
Notice: It is important to check your oil
regularly and keep it at the proper level. Failure
to keep your engine oil at the proper level
can cause damage to your engine not covered
by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
®
DEX-COOL coolant mixture if necessary. See
Engine Coolant on page 445 for further details.
558
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in
the windshield washer fluid reservoir and add the
proper fluid if necessary.

At Least Once a Month

Tire Inflation Check
Visually inspect your vehicle's tires and make sure
they are inflated to the correct pressures. Do
not forget to check the spare tire. See Tires on
page 480 for further details. Check to make
sure the spare tire is stored securely. See
Changing a Flat Tire on page 506.
Tire Wear Inspection
Tire rotation may be required for high mileage
highway drivers prior to the Engine Oil Life System
service notification. Check the tires for wear
and, if necessary, rotate the tires. See Tire
Inspection and Rotation on page 496.