towing HUMMER H2 2005 Owner's Guide

If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. Turn on your heater to full hot at the highest fan
speed and open the windows as necessary.
2. If you are in a traffic jam, shift to NEUTRAL (N);
otherwise, shift to the highest gear while
driving — DRIVE (D).
If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning does not come back on, you can
drive normally.
If the warning continues and you have not stopped, pull
over, stop, and park your vehicle right away.
If there is still no sign of steam, push down the
accelerator until the engine speed is about twice as fast
as normal idle speed for at least three minutes while
you are parked. If you still have the warning,turn off the
engine and get everyone out of the vehicleuntil it
cools down. Also, see “Overheated Engine Protection
Operating Mode” later in this section.
You may decide not to lift the hood but to get service
help right away.Overheated Engine Protection
Operating Mode
If an overheated engine condition exists and the
REDUCED ENGINE POWER message is displayed, an
overheat protection mode which alternates ring
groups of cylinders helps prevent engine damage. In
this mode, you will notice a loss in power and engine
performance. This operating mode allows your vehicle to
be driven to a safe place in an emergency. Driving
extended miles (km) and/or towing a trailer in the
overheat protection mode should be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine damage,
allow the engine to cool before attempting any
repair. The engine oil will be severely degraded.
Repair the cause of coolant loss, change the oil and
reset the oil life system. SeeEngine Oil on
page 5-13.
5-28

(c)Visually inspect hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
ttings and clamps; replace with genuine GM parts as
needed. To help ensure proper operation, a pressure test
of the cooling system and pressure cap and cleaning the
outside of the radiator and air conditioning condenser is
recommended at least once a year.
(d)Visually inspect wiper blades for wear or cracking.
Replace blade inserts that appear worn or damaged
or that streak or miss areas of the windshield.
(e)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken air bag
coverings, and have them repaired or replaced. (The air
bag system does not need regular maintenance.)
(f)Lubricate all key lock cylinders, hood latch assembly,
secondary latch, pivots, spring anchor, release pawl,
rear compartment hinges, outer liftgate handle pivot
points, rear door detent link, roller mechanism, liftgate
handle pivot points, latch bolt, fuel door hinge, cargo
door hinge, locks and folding seat hardware. More
frequent lubrication may be required when exposed to a
corrosive environment. Applying silicone grease on
weatherstrips with a clean cloth will make them
last longer, seal better and not stick or squeak.SUT spare tire carrier hinge: Inspect for leaks and
lubricate if required. Remove the setscrew at the hinge
casting and add lubricant, moving the hinge back
and forth periodically, until lubricant can be seen coming
from the setscrew opening. Install setscrew and
tighten to 7 ft lb (9Y). SeeRecommended uids and
Lubricants on page 6-12for what lubricant to use.
(g)Check vent hose at transfer case for kinks and
proper installation.
(h)Change automatic transmission uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or delivery
service.
(i)Drain, ush and rell cooling system. See Engine
Coolant on page 5-24for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and ller neck.
Pressure test the cooling system and pressure cap.
(j)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired and
the uid level checked. Add uid if needed.
6-8

Rear Seat Audio (RSA)....................................3-87
Rear Seat Passengers, Safety Belts..................1-30
Rearview Mirror, Automatic Dimming with
Compass and Temperature Display................2-43
Rearview Mirror, Automatic Dimming with
OnStar
®, Compass and Temperature Display.....2-41
Reclining Seatbacks.......................................... 1-5
Recommended Fluids and Lubricants.................6-12
Recovery Loops..............................................4-53
Recreational Vehicle Towing.............................4-64
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
Removing the Flat Tire and Installing the
Spare Tire..................................................5-79
Removing the Spare Tire and Tools...................5-71
Replacement Bulbs.........................................5-52
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking Your Restraint Systems...................1-69
Replacing Restraint System Parts After a
Crash.....................................................1-70
Restraint Systems
Checking....................................................1-69
Replacing Parts...........................................1-70Retained Accessory Power (RAP)......................2-26
Ride Height, Selectable Extended Rear Ride......4-65
Right Front Passenger Position, Safety Belts......1-30
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle to Get it Out....................4-53
Routing, Engine Drive Belt...............................6-14
Running Your Engine While You Are Parked.......2-40
S
Safety Belt
Reminder Light............................................3-28
Safety Belts
Care of......................................................5-95
Driver Position............................................1-22
How to Wear Safety Belts Properly................1-22
Questions and Answers About Safety Belts.....1-21
Rear Safety Belt Comfort Guides for
Children and Small Adults.........................1-33
Rear Seat Passengers.................................1-30
Right Front Passenger Position......................1-30
Safety Belt Extender....................................1-35
Safety Belt Use During Pregnancy.................1-29
Safety Belts Are for Everyone.......................1-16
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
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Theft-Deterrent Systems (cont.)
Content Theft-Deterrent................................2-22
Passlock
®...................................................2-24
Third Row Seat..............................................1-10
Tilt Wheel........................................................ 3-6
Tires.............................................................5-54
Aluminum Wheels, Cleaning..........................5-98
Buying New Tires........................................5-63
Chains.......................................................5-67
Changing a Flat Tire....................................5-70
Cleaning....................................................5-99
If a Tire Goes Flat.......................................5-69
Ination -- Tire Pressure...............................5-60
Inspection and Rotation................................5-61
Installing the Spare Tire................................5-79
Removing the Flat Tire.................................5-79
Removing the Spare Tire and Tools...............5-71
Spare Tire..................................................5-91
Storing a Flat or Spare Tire and Tools............5-86
Tire Sidewall Labelling..................................5-55
Tire Terminology and Denitions....................5-58
Uniform Tire Quality Grading.........................5-64
Wheel Alignment and Tire Balance.................5-65
Wheel Replacement.....................................5-66
When It Is Time for New Tires......................5-63
Tonneau Cover...............................................2-61
Tool Kit .........................................................4-55
Top Strap......................................................1-46
Top Strap Anchor Location...............................1-47
Tow/Haul Mode...............................................2-31Tow/Haul Mode Light.......................................3-42
Towing
Recreational Vehicle.....................................4-64
Towing a Trailer..........................................4-68
Your Vehicle...............................................4-64
Traction
Control System (TCS).................................... 4-9
Off Light.....................................................3-34
Trailer
Recommendations.......................................4-67
Transmission
Fluid, Automatic...........................................5-21
Temperature Gage.......................................3-35
Transmission Operation, Automatic....................2-28
Turn and Lane-Change Signals.......................... 3-7
Turn Signal/Multifunction Lever........................... 3-7
U
Understanding Radio Reception........................3-90
Uniform Tire Quality Grading............................5-64
V
Vehicle
Control........................................................ 4-5
Damage Warnings........................................... iv
Symbols......................................................... iv
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