2004 HUMMER H2 radiator

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Page 171 of 472

HUMMER H2 2004  Owners Manual If the transmission �uid reaches temperatures of
approximately 275°F (135°C) or greater, the DIC will
display a TRANS HOT IDLE ENGINE warning message
and a chime will sound. Pull the vehicle off the

Page 194 of 472

HUMMER H2 2004  Owners Manual The following situations can cause the transmission to
operate at higher temperatures:
Towing a trailer
Hot outside air temperatures
Hauling a large or heavy load
Low transmission �uid level
High

Page 338 of 472

HUMMER H2 2004  Owners Manual Engine Coolant
The cooling system in your vehicle is �lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs

Page 339 of 472

HUMMER H2 2004  Owners Manual {CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant

Page 340 of 472

HUMMER H2 2004  Owners Manual Checking Coolant
The coolant surge tank is
located in the engine
compartment on the
passenger’s side of the
vehicle.
SeeEngine Compartment Overview on page 5-12for
more information on location.{CAUT

Page 345 of 472

HUMMER H2 2004  Owners Manual The coolant level should
be at or above the FULL
COLD mark. If it isn’t,
you may have a leak at the
pressure cap or in the
radiator hoses, heater
hoses, radiator, water
pump or somewhere else
in the

Page 346 of 472

HUMMER H2 2004  Owners Manual How to Add Coolant to the Coolant
Surge Tank
If you haven’t found a problem yet, check to see if
coolant is visible in the surge tank. If coolant is visible
but the coolant level isn’t at or above

Page 347 of 472

HUMMER H2 2004  Owners Manual {CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will.
Yourvehicle’s coolant w
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