2009 GMC SIERRA 1500 climate control

Driving with a Trailer
{CAUTION:
When towing a trailer, exhaust gases may collect
at the rear of the vehicle and enter if the liftgate,
trunk/hatch, or rear-most window is open.
Engine exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can cause
unconsciousness and even death.
To maximize safety when towing a trailer:
Have the exhaust system inspected for leaks
and make necessary repairs before starting
a trip.
Never drive with the liftgate, trunk/hatch, or
rear-most window open.
Fully open the air outlets on or under the
instrument panel.
Adjust the Climate Control system to a setting
that brings in only outside air and set the fan
speed to the highest setting. See Climate
Control System in the Index.
For more information about carbon monoxide, see
Engine Exhaust on page 2-55.Towing a trailer requires a certain amount of experience.
Get to know the rig before setting out for the open
road. Get acquainted with the feel of handling and
braking with the added weight of the trailer. And always
keep in mind that the vehicle you are driving is now
longer and not as responsive as the vehicle is by itself.
Before starting, check all trailer hitch parts and
attachments, safety chains, electrical connectors, lamps,
tires and mirror adjustments. If the trailer has electric
brakes, start the vehicle and trailer moving and
then apply the trailer brake controller by hand to be sure
the brakes are working. This checks the electrical
connection at the same time.
During the trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer brakes
are still working.
While towing a trailer or when exposed to long periods
of sunshine, the oor of the truck bed may become
very warm. Avoid putting items in the truck bed
that might be affected by high ambient temperatures.
4-77

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.
5-89

The vehicle may not use all of the fuses shown.
Fuses Usage
1 Rear Seats
2 Rear Accessory Power Outlet
3 Steering Wheel Controls Backlight
4 Driver Door Module
5Dome Lamps, Driver Side Turn
Signal
6 Driver Side Turn Signal, Stoplamp
Fuses Usage
7 Instrument Panel Back Lighting
8Passenger Side Turn Signal,
Stoplamp
9Passenger Door Module,
Driver Unlock
10 Power Door Lock 2 (Unlock Feature)
11 Power Door Lock 2 (Lock Feature)
12Stoplamps, Center-High Mounted
Stoplamp
13 Rear Climate Controls
14 Power Mirror
15 Body Control Module (BCM)
16 Accessory Power Outlets
17 Interior Lamps
18 Power Door Lock 1 (Unlock Feature)
19 Rear Seat Entertainment
20Ultrasonic Rear Parking Assist,
Power Liftgate
21 Power Door Lock 1 (Lock Feature)
5-125

Fuses Usage
20 Fuel Pump
21 Fuel System Control Module
22 Not Used
23 Not Used
24Fuel Injectors, Ignition Coils
(Left Side)
25 Trailer Park Lamps
26 Driver Side Park Lamps
27 Passenger Side Park Lamps
28 Fog Lamps
29 Horn
30Passenger Side High-Beam
Headlamp
31 Daytime Running Lamps (DRL)
32 Driver Side High-Beam Headlamp
33 Daytime Running Lights 2
34 Sunroof
35Key Ignition System,
Theft Deterrent System
36 Windshield Wiper
37 SEO B2 Uptter Usage (Battery)
38 Electric Adjustable PedalsFuses Usage
39 Climate Controls (Battery)
40 Airbag System (Ignition)
41 Amplier
42 Audio System
43Miscellaneous (Ignition),
Cruise Control
44 Not Used
45 Airbag System (Battery)
46 Instrument Panel Cluster
47 Power Take-Off
48 Auxiliary Climate Control (Ignition)
49Center High-Mounted
Stoplamp (CHMSL)
50 Rear Defogger
51 Heated Mirrors
52 SEO B1 Uptter Usage (Battery)
53Cigarette Lighter, Auxiliary
Power Outlet
54 SEO Uptter Usage
55 Climate Controls (Ignition)
56Engine Control Module, Secondary
Fuel Pump (Ignition)
5-129

J-Case Fuses Usage
57 Cooling Fan 1
58 Not Used
59 Heavy Duty Antilock Brake System
60 Cooling Fan 2
61 Antilock Brake System 1
62 Starter
63 Stud 2 (Trailer Brakes)
64 Left Bussed Electrical Center 1
65 Not Used
66 Heated Windshield Washer System
67 Transfer Case
68Stud 1 (Trailer Connector Battery
Power) (Optional - 40A Fuse
Required)
69 Mid-Bussed Electrical Center 1
70 Climate Control Blower
71 Not Used
72 Left Bussed Electrical Center 2Relays Usage
FAN HI Cooling Fan High Speed
FAN LO Cooling Fan Low Speed
FAN CNTRL Cooling Fan Control
HDLP LO/HID Low-Beam Headlamp
FOG LAMP Front Fog Lamps
A/C CMPRSR Air Conditioning Compressor
STRTR Starter
PWR/TRN Powertrain
FUEL PMP Fuel Pump
PRK LAMP Parking Lamps
REAR DEFOG Rear Defogger
RUN/CRANK Switched Power
5-130

Cleaning
Aluminum or Chrome-Plated Wheels.............5-120
Exterior Lamps/Lenses................................5-119
Fabric/Carpet............................................5-116
Finish Care...............................................5-119
Instrument Panel, Vinyl, and Other Plastic
Surfaces...............................................5-117
Interior.....................................................5-115
Leather....................................................5-117
Tires........................................................5-121
Underbody Maintenance.............................5-122
Washing Your Vehicle.................................5-118
Weatherstrips............................................5-118
Windshield and Wiper Blades......................5-120
Climate Control System...........................3-24, 3-25
Outlet Adjustment........................................3-33
Climate Control Systems
Dual Automatic............................................3-27
Clock, Setting.................................................3-85
Collision Damage Repair..................................7-12
Compass.......................................................3-63
Content Theft-Deterrent....................................2-18
Control of a Vehicle.......................................... 4-3
Coolant
Engine.......................................................5-32
Engine Temperature Gage............................3-44Cooling System..............................................5-30
Courtesy Transportation Program......................7-10
Cruise Control................................................3-12
Cruise Control Light........................................3-50
Cupholders....................................................2-80
Customer Assistance......................................... 7-6
Offices......................................................... 7-6
Text Telephone (TTY) Users........................... 7-6
Customer Information
Service Publications Ordering Information........7-16
Customer Satisfaction Procedure........................ 7-2
D
Damage Repair, Collision.................................7-12
Data Recorders
Event.........................................................7-18
Daytime Running Lamps (DRL).........................3-17
Defensive Driving............................................. 4-2
Delayed Locking.............................................2-11
DIC Compass.................................................3-63
Disc, MP3..........................................3-106, 3-111
Doing Your Own Service Work........................... 5-5
Dome Lamp Override......................................3-20
Dome Lamps .................................................3-20
4

Door
Delayed Locking..........................................2-11
Locks........................................................2-10
Power Door Locks.......................................2-10
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-11
Rear Doors.................................................2-12
Driver Information Center (DIC).........................3-53
DIC Operation and Displays..................3-53, 3-59
DIC Vehicle Customization............................3-75
DIC Warnings and Messages........................3-66
Driving
At Night.....................................................4-26
Before a Long Trip......................................4-28
Defensive..................................................... 4-2
Drunk.......................................................... 4-3
Highway Hypnosis.......................................4-28
Hill and Mountain Roads..............................4-28
In Rain and on Wet Roads...........................4-27
Loss of Control...........................................4-11
Off-Road ....................................................4-13
Off-Road Recovery......................................4-10
Recovery Hooks..........................................4-33
Rocking Your Vehicle to Get it Out.................4-32
Winter........................................................4-30
Driving for Better Fuel Economy......................... 4-2Dual Automatic Climate Control System.............3-27
Dual Tire Operation.........................................5-78
DVD
Rear Seat Entertainment System..................3-129
E
E85 Fuel......................................................... 5-9
EDR .............................................................7-17
Electrical Equipment
Add-On Equipment.....................................5-123
Electrical System
Center Instrument Panel Fuse Block.............5-126
Fuses and Circuit Breakers.........................5-124
Instrument Panel Fuse Block.......................5-124
Power Windows and Other Power Options....5-123
Underhood Fuse Block...............................5-127
Windshield Wiper Fuses.............................5-123
Electronic Immobilizer
PASS-Key
®III+...........................................2-20
Electronic Immobilizer Operation
PASS-Key
®III+...........................................2-20
Engine
Air Cleaner/Filter.........................................5-22
Check and Service Engine Soon Lamp...........3-45
Compartment Overview................................5-16
5