GMC 2011 Yukon XL Denali Owner's Manual page 441

system whenever the oil is changed.
See Engine Oil Life System on
page 10 11.
Every Engine Oil Change
Change engine oil and filter.
Reset oil life system. See
Engine Oil on page 10 8 and
Engine Oil Life System on
page 10 11. An Emission
Control Service.
Engine coolant level check. See
Engine Coolant on page 10 18.
Engine cooling system
inspection. Visual inspection
of hoses, pipes, fittings, and
clamps and replacement,
if needed.
Windshield washer fluid level
check. See Washer Fluid on
page 10 25.
Windshield wiper blade
inspection for wear, cracking,
or contamination and windshield
and wiper blade cleaning,
if contaminated. See Exterior
Care on page 10 92. Worn or
damaged wiper blade
replacement. See Wiper Blade
Replacement on page 10 34.
Tire inflation pressures check.
See Tire Pressure on
page 10 54.
Tire wear inspection. See Tire
Inspection on page 10 61.
Rotate tires if necessary. See
Tire Rotation on page 10 61.
Fluids visual leak check (or
every 12 months, whichever
occurs first). A leak in any
system must be repaired and
the fluid level checked.
Engine air cleaner filter
inspection. See Engine Air
Cleaner/Filter on page 10 15.
Brake system inspection (or
every 12 months, whichever
occurs first).
Steering and suspension
inspection. Visual inspection
for damaged, loose, or missing
parts or signs of wear.
Service and Maintenance
Lubricate the front suspension,
steering linkage, and parking
brake cable guides. Control arm
ball joints are maintenance free.
Body hinges and latches, key
lock cylinders, folding seat
hardware, and liftgate hinges,
linkage, and handle pivot points
lubrication. See Recommended
Fluids and Lubricants on
page 11 6. More frequent
lubrication may be required
when the vehicle is exposed to a
corrosive environment. Applying
silicone grease on weatherstrips
with a clean cloth makes them
last longer, seal better, and not
stick or squeak.
Restraint system component
check. See Safety System
Check on page 3 31.
Fuel system inspection for
damage or leaks.
Exhaust system and nearby heat
shields inspection for loose or
damaged components.
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