6-43Inflation -- Tire Pressure The Certification/Tire label, which is located on the rear
edge of the driver's door, shows the correct inflation
pressures for your tires when they're cold. ªColdº
means your vehicle has been sitting for at least
three hours or driven no more than 1 mile (1.6 km).
NOTICE: Don't let anyone tell you that underinflation or
overinflation is all right. It's not. If your tires
don't have enough air (underinflation), you can
get the following:
Too much flexing
Too much heat
Tire overloading
Bad wear
Bad handling
Bad fuel economy
NOTICE: (Continued) NOTICE: (Continued)
If your tires have too much air (overinflation),
you can get the following:
Unusual wear
Bad handling
Rough ride
Needless damage from road hazards
When to Check
Check your tires once a month or more. Also, check the
tire pressure of the spare tire.
How to Check
Use a good quality pocket
- type gage to check tire
pressure. You can't tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they're underinflated.
Be sure to put the valve caps back on the valve
stems. They help prevent leaks by keeping out dirt
and moisture.
6-70Capacities and Specifications Please refer to ªRecommended Fluids and Lubricantsº
in the Index for more information. All capacities
are approximate.
Engine VORTEC 6000 . . . . . . . . . . . . . . . . . . . . . . . .
Type V8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VIN Code U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark Plug Gap 0.060 inches (1.52 mm) . . . . . . . . . .
Wheels and Tires Wheel Nut Torque 140 lb
- ft (190 N´m). . . . . . . . . . .
Tire Pressure See the Certification/Tire label . . . . . .
on the rear edge of the driver's door.
Capacities Cooling System 19.0 quarts (18.0 L). . . . . . . . . . . . .
Engine Oil with Filter 6.0 quarts (5.7 L). . . . . . . . . .
Fuel Tank
Yukon Denali 26.0 U.S. gallons (98.0 L). . . . . . . . .
Yukon XL Denali 31.0 U.S. gallons (117.0 L) . . . . . Air Conditioning
Refrigerant Capacity If you do your own service work, you'll need the proper
service manual. See ªDoing Your Own Service Workº in
the Index for additional information. It is recommended
that service work on your air conditioning system be
performed by a qualified technician.
Air Conditioning Refrigerant R
- 134a
Yukon Denali 2.71 lbs. (1.23 kg). . . . . . . . . . . . . . . .
Yukon XL Denali 3.0 lbs. (1.36 kg). . . . . . . . . . . . .
Use Refrigerant Oil, R
- 134a Systems
7-21Part C: Periodic
Maintenance Inspections Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall). You should let your dealer's
service department or other qualified service center
do these jobs. Make sure any necessary repairs are
completed at once.
Proper procedures to perform these services may be
found in a service manual. See ªService and Owner
Publicationsº in the Index.
Steering and Suspension Inspection Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook
- up, binding, leaks,
cracks, chafing, etc. Exhaust System Inspection Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out
- of
- position parts as well as open seams,
holes, loose connections or other conditions which could
cause a heat build
- up in the floor pan or could let
exhaust fumes into the vehicle. See ªEngine Exhaustº
in the Index.
Fuel System Inspection Inspect the complete fuel system for damage or leaks.
Engine Cooling System Inspection Inspect the hoses and have them replaced if they are
cracked, swollen or deteriorated. Inspect all pipes,
fittings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
