ad blue HUMMER H2 2009 User Guide

Maintenance When Trailer Towing
The vehicle needs service more often when pulling a
trailer. See this manual’s Maintenance Schedule or Index
for more information. Things that are especially important
in trailer operation are automatic transmission uid,
engine oil, axle lubricant, belts, cooling system and brake
system. It is a good idea to inspect these before and
during the trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Trailer Wiring Harness
Heavy-Duty Trailer Wiring Harness
Package
The vehicle is equipped with the seven-wire trailer towing
harness. This harness with a seven-pin universal trailer
connector is attached to a bracket on the hitch platform.The seven-wire harness contains the following trailer
circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn Signal
Brown: Taillamps
White: Ground
Light Green: Back-up Lamps
Red/Black: Battery Feed*
Dark Blue: Trailer Brake*
*There is a location in the Underhood Fuse Block for
these circuits, but they are not connected. They should
be connected, and proper fuses installed, by your
dealer/retailer or a qualied service center.
If charging a remote (non-vehicle) battery, press the
Tow/Haul mode button located at the end of the
shift lever. This will boost the vehicle system voltage
and properly charge the battery.
4-67

Electric Brake Control Wiring
Provisions
These wiring provisions are included with the vehicle
as part of the trailer wiring package. These provisions
are for an electric brake controller. The instrument panel
contains blunt cut wires near the data link connector
for the trailer brake controller. The harness contains
the following wires:
Dark Blue: Brake Signal to Trailer Connector
Red/Black: Battery
Light Blue/White: Brake Switch
White: Ground
It should be installed by your dealer/retailer or a
qualied service center.
Trailer Recommendations
Subtract the hitch loads from the Cargo Weight Rating
(CWR). CWR is the maximum weight of the load
the vehicle can carry. It does not include the weight of
the people inside, but you can gure about 150 lbs.
(68 kg) for each passenger. The total cargo load must
not be more than the vehicles CWR.
Weigh the vehicle with the trailer attached, so the GVWR
or GAWR are not exceeded. If using a weight-distributing
hitch, weigh the vehicle without the spring bars in place.
The best performance is obtained by correctly spreading
out the weight of the load and choosing the correct
hitch and trailer brakes.
For more information seeTowing a Trailer on page 4-55.
4-68

Audio System (cont.)
Rear Seat Audio (RSA)...............................3-127
Setting the Clock.........................................3-73
Theft-Deterrent Feature...............................3-128
XM™ Satellite Radio Antenna System...........3-130
Audio System(s).............................................3-75
Automatic Headlamp System............................3-17
Automatic Transmission
Fluid..........................................................5-23
Operation...................................................2-32
B
Battery..........................................................5-41
Electric Power Management..........................3-19
Run-Down Protection...................................3-19
Bluetooth
®....................................................3-107
Brake
Emergencies................................................ 4-6
Brake Fluid....................................................5-38
Brakes..........................................................5-38
System Warning Light..................................3-37
Braking........................................................... 4-4
Braking in Emergencies..................................... 4-6
Break-In, New Vehicle.....................................2-27
Bucket Seats, Rear.........................................1-13Bulb Replacement...........................................5-50
Daytime Running Lamp................................5-52
Front Turn Signal and Parking Lamps.............5-52
Halogen Bulbs............................................5-50
Headlamps.................................................5-51
Replacement Bulbs......................................5-55
Roof Marker Lamps.....................................5-53
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-54
Buying New Tires...........................................5-72
C
Calibration.....................................................3-54
California Fuel.................................................. 5-6
California Perchlorate Materials Requirements....... 5-4
California Proposition 65 Warning....................... 5-4
Canadian Owners................................................ ii
Capacities and Specications..........................5-117
Carbon Monoxide...................2-14, 2-16, 2-45, 4-37
Care of
Safety Belts..............................................5-105
Cargo Area, All-Weather..................................2-66
Cargo Tie Downs............................................2-66
CD, MP3 ...............................................3-94, 3-99
Center Console Storage Area...........................2-65
2

O
Odometer......................................................3-31
Odometer, Trip...............................................3-31
Off-Road Driving.............................................4-15
Off-Road Recovery..........................................4-13
Oil
Engine.......................................................5-15
Pressure Gage............................................3-42
Pressure Light.............................................3-43
Oil, Engine Oil Life System..............................5-18
Older Children, Restraints................................1-40
Online Owner Center........................................ 7-5
OnStar, Privacy..............................................7-18
OnStar
®System, see OnStar®Manual...............2-54
Operation, Universal Home Remote System........2-58
Outlet Adjustment............................................3-27
Outlets
Accessory Power.........................................3-20
Outside
Automatic Dimming Mirror.............................2-48
Convex Mirror.............................................2-49
Heated Mirrors............................................2-49
Power Foldaway Mirrors...............................2-47
Overheated Engine Protection Operating Mode . . . 5-35
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
P
Paint, Damage..............................................5-108
Park
Shifting Into................................................2-43
Shifting Out of............................................2-44
Park Aid........................................................2-50
Park Brake....................................................2-42
Park Tilt Mirrors..............................................2-48
Parking
Over Things That Burn.................................2-45
Passing.........................................................4-13
PASS-Key
®III+ Electronic Immobilizer...............2-25
PASS-Key®III+ Electronic Immobilizer
Operation...................................................2-26
Perchlorate Materials Requirements, California...... 5-4
Phone
Bluetooth
®................................................3-107
Power
Door Locks.................................................2-11
Electrical System.......................................5-110
Lumbar Controls........................................... 1-5
Reclining Seatbacks...................................... 1-8
Retained Accessory.....................................2-29
Seat............................................................ 1-4
Steering Fluid.............................................5-36
Windows....................................................2-20
9