2002 GMC YUKON DENALI coolant level

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Page 168 of 407

GMC YUKON DENALI 2002  Owners Manual 2-80 Low Coolant
This message is displayed
when the cooling system is
low on coolant.
The engine may overheat. See ªEngine Coolantº in 
the Index and have your vehicle serviced as soon as 
you can.

Page 181 of 407

GMC YUKON DENALI 2002  Owners Manual 3-5
Mode Knob - Automatic Operation
When the system is set in AUTO mode, sensors will
control the air delivery mode. Air will come primarily
from the floor or instrument panel outlets, with some air
d

Page 184 of 407

GMC YUKON DENALI 2002  Owners Manual 3-8 Air Conditioning
On hot days, open the windows long enough to let hot
air inside escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air con

Page 256 of 407

GMC YUKON DENALI 2002  Owners Manual 4-53 Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade. If you dont shift
down, you might have to use your brakes so much that
they would get ho

Page 271 of 407

GMC YUKON DENALI 2002  Owners Manual 5-12
Cooling System
When you decide its safe to lift the hood, heres what
youll see:
A. Coolant Surge Tank
B. Coolant Surge Tank Pressure Cap
C. Engine Fan
If the coolant inside the coolant surge t

Page 273 of 407

GMC YUKON DENALI 2002  Owners Manual 5-14 How to Add Coolant to the Coolant 
Surge Tank
If you havent found a problem yet, check to see if
coolant is visible in the surge tank. If coolant is visible
but the coolant level isnt at or abo

Page 275 of 407

GMC YUKON DENALI 2002  Owners Manual 5-16
The coolant surge tank on
your vehicle may be
equipped with one of the
two caps shown.
1. Park the vehicle on a level surface. You can remove
the coolant surge tank pressure cap when the cooling

Page 277 of 407

GMC YUKON DENALI 2002  Owners Manual 5-18
4. With the coolant surge tank pressure cap off, start the
engine and let it run until you can feel the upper
radiator hose getting hot. Watch out for the engine
cooling fan.
By this time, the co
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