climate control HUMMER H3 2007 User Guide

Recirculation is available in the bi-level, and vent
modes. Recirculation is not available while in
oor, oor/defog and defrost mode. If recirculation
is selected in these modes, the indicator will
ash three times indicating it is not available in
that mode. When the recirculation mode is turned
on, the air conditioning will turn on automatically.
H(Vent):Turn the right knob on the control
panel to this mode to direct air to the instrument
panel outlets.
\(Bi-Level):Turn the right knob on the control
panel to this mode to direct air to the instrument
panel outlets, and the remaining air to the
oor outlets and the defroster and side window
outlets. Cooler air is directed to the upper outlets
and warmer air to the oor outlets.
[(Floor):Turn the right knob on the control
panel to this mode to direct air to the oor outlets,
side window outlets, and defroster. Recirculation
is not available in this mode.
Defogging and Defrosting
Fog on the inside of windows is a result of high
humidity (moisture) condensing on the cool window
glass. This can be minimized if the climate
control system is used properly. There are
two modes to clear fog or frost from your
windshield and side windows. Use the defog mode
to clear the windows of fog or moisture and
warm the passengers. Use the defrost mode to
remove fog or frost from the windshield more
quickly. For best results, clear all snow and ice
from the windshield before defrosting.
/(Floor/Defog):Turn the right knob on the
control panel to this mode to direct the air to
the windshield, the side window outlets, and to
the oor outlets. When you select this mode, the
system runs the air conditioning system unless
the outside temperature is near freezing or below.
Recirculation is not available in this mode.
172

Battery Warning Light
This light will come on
briey when you start
the vehicle, as a
check to show you
it is working; then
it should go out.
If it stays on, or comes on while you are driving,
you may have a problem with the electrical
charging system. Have it checked right away.
Driving while this light is on could drain your
battery and result in a vehicle that may stall.
SeeDIC Warnings and Messages on page 196
for more information.
If you must drive a short distance with the light
on, be certain to turn off all your accessories,
such as the radio and climate control system.
Up-Shift Light
(Manual Transmission)
This light appears when
you need to shift to the
next higher gear on
a manual transmission
vehicle.
Shifting when the indicator light is on will help you
get the best fuel economy. See “Up-Shift Light”
underManual Transmission Operation on
page 109for more information.
181

DIC Warnings and Messages
Messages are displayed on the DIC to notify the
driver that the status of the vehicle has changed
and that some action may be needed by the driver
to correct the condition. Multiple messages may
appear one after another. The messages are
displayed for four seconds each.
Some messages may not require immediate
action, but you should press and release the trip
odometer reset stem to acknowledge that you
received the messages and to clear them from the
display. Each message must be acknowledged
individually.
Some messages cannot be cleared from the DIC
display because they are more urgent. These
messages require action before they can be
cleared. You should take any messages that
appear on the display seriously and remember
that clearing the messages will only make
the messages disappear, not correct the problem.
The following are the possible messages that can
be displayed and some information about them.
AC (Air Conditioning) OFF
This message displays when the engine coolant
temperature is too high and the air conditioning in
your vehicle needs to be turned off. SeeEngine
Overheating on page 338andClimate Control
System on page 170for more information.
This message displays along with the ENG HOT
message.
ABS (Anti-Lock Brake System) FAULT
This message displays if there is a problem
with the Anti-Lock Brake System (ABS). Check the
ABS as soon as possible and have your vehicle
serviced by your dealer. SeeBrakes on page 347
andAnti-Lock Brake System Warning Light on
page 183for more information. Press and release
the reset stem to acknowledge the message
and clear it from the display.
196

Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder
and maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use
spare tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements and additional
General Motors Tire Performance Criteria (TPC)
standards.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specied
government test course. For example, a tire
graded 150 would wear one and a half (1.5) times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from
the norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are
AA, A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured
under controlled conditions on specied
government test surfaces of asphalt and concrete.
A tire marked C may have poor traction
performance.
Warning:The traction grade assigned to this tire
is based on straight-ahead braking traction
tests, and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
386

Fuse Usage
54 Stop
55 Trailer Parking Lamps
56 Front Turn Signal, Hazard Signal
57 Power Sunroof
58Transfer Case Control Module
Switch
59 Climate Control
60 Spare 8
61 Power Seats
62 Air Pump
63 Passenger’s Side Power Window
64Anti-lock Brakes, StabiliTrak
®2
Solenoid
67Anti-lock Brakes, StabiliTrak
®1
Motor
68 Driver’s Side Power Window
82 Climate Control Fan
83 Electronic Brake Controller
84 Trailer B+ Fuse
85 Starter
91 Megafuse
Relay Usage
66 Fuel Pump
69 Fog Lamp
70 High, Low Beam Headlamps
71 Rear Defogger
72 Windshield Wiper On/Off
73 Windshield Wiper High/Low
74 Horn
75 Headlamp
76 Air Conditioning Clutch
77 Powertrain Control Module
78 Run, Crank
79Reduced Intensity Low-Beam
Daytime Running Lamps
80 Air Injection Reactor (AIR) Solenoid
81 Powertrain (Starter)
86 Spare 2
87 Heating, Ventilation, Air Conditioning
88 Retained Accessory Power
89 Park Lamp
Diode Usage
65 Wiper Diode
90 Air Conditioning Clutch Diode
421

Capacities and Specications...................... 422
Carbon Monoxide............... 95,120, 281, 297
Care of
Safety Belts............................................. 409
Your CD Player........................................ 232
Your CDs ................................................. 231
Cargo Cover............................................... 146
Cargo Tie Downs........................................ 146
CD, MP3 ..................................................... 222
Chains, Tire................................................. 389
Check
Engine Light............................................ 186
Checking Things Under the Hood................ 321
Chemical Paint Spotting.............................. 414
Child Restraints
Child Restraint Systems............................. 45
Infants and Young Children........................ 42
Lower Anchors and Tethers for Children..... 51
Older Children........................................... 39
Securing a Child Restraint in a
Rear Outside Seat Position.................... 57
Securing a Child Restraint in the
Center Rear Seat Position...................... 60
Securing a Child Restraint in the
Right Front Seat Position........................ 60
Where to Put the Restraint........................ 49
Cigarette Lighter.......................................... 170Cleaning
Aluminum or Chrome-Plated Wheels........ 412
Exterior Lamps/Lenses............................. 410
Fabric/Carpet........................................... 407
Finish Care.............................................. 410
Inside of Your Vehicle .............................. 406
Instrument Panel, Vinyl, and Other
Plastic Surfaces.................................... 409
Leather.................................................... 408
Tires........................................................ 413
Underbody Maintenance........................... 413
Washing Your Vehicle .............................. 410
Weatherstrips........................................... 409
Windshield, Backglass, and
Wiper Blades........................................ 411
Climate Control System............................... 170
Outlet Adjustment..................................... 173
Clutch, Hydraulic......................................... 334
Collision Damage Repair............................. 460
Comfort Guides, Rear Safety Belt................. 35
Compass............................................122, 125
Content Theft-Deterrent................................. 98
Control of a Vehicle..................................... 238
Convenience Net......................................... 146
Coolant
Engine Temperature Gage........................ 185
Heater, Engine......................................... 105
469