trailer GMC SIERRA 2007 Manual PDF

Engine Fan Noise
If your vehicle has a clutched engine cooling fan,
when the clutch is engaged, the fan spins
faster to provide more air to cool the engine. In
most everyday driving conditions, the fan is
spinning slower and the clutch is not fully engaged.
This improves fuel economy and reduces fan
noise. Under heavy vehicle loading, trailer towing,
and/or high outside temperatures, the fan speed
increases as the clutch more fully engages, so you
may hear an increase in fan noise. This is
normal and should not be mistaken as the
transmission slipping or making extra shifts. It is
merely the cooling system functioning properly.
The fan will slow down when additional cooling is
not required and the clutch disengages.You may also hear this fan noise when you start
the engine. It will go away as the fan clutch
partially disengages.
If your vehicle has electric cooling fans, you may
hear the fans spinning at low speed during most
everyday driving. The fans may turn off if no cooling
is required. Under heavy vehicle loading, trailer
towing, and/or high outside temperatures, or if you
are operating your air conditioning system, the fans
may change to high speed and you may hear an
increase in fan noise. This is normal and indicates
that the cooling system is functioning properly. The
fans will change to low speed when additional
cooling is no longer required.
525

Fuses Usage
1 Right Trailer Stop/Turn Lamp
2 Not Used
3Electronic Stability Suspension Control,
Automatic Level Control Exhaust
4 Left Trailer Stop/Turn LampFuses Usage
5 Engine Controls
6 Engine Control Module, Throttle Control
7 Trailer Brake Controller
8 Front Washer
613

Fuses Usage
9 Oxygen Sensors
10 Anti-lock Brakes System 2
11 Trailer Back-up Lamps
12 Driver’s Side Low-Beam Headlamp
13 Engine Control Module (Battery)
14 Fuel Injectors, Ignition Coils (Right Side)
15 Transmission Control Module (Battery)
16 Vehicle Back-up Lamps
17 Passenger’s Side Low-Beam Headlamp
18 Air Conditioning Compressor
19 Oxygen Sensors
20 Transmission Controls (Ignition)
21 Fuel Pump
22 Fuel System Control Module
23 Not Used
24 Not Used
25 Fuel Injectors, Ignition Coils (Left Side)
26 Trailer Park Lamps
27 Driver’s Side Park Lamps
28 Passenger’s Side Park Lamps
29 Fog Lamps
30 Horn
31 Passenger’s Side High-Beam HeadlampFuses Usage
32 Daytime Running Lamps
33 Driver’s Side High-Beam Headlamp
34 Not Used
35 Sunroof
36Key Ignition System, Theft Deterrent
System
37 Windshield Wiper
38 SEO B2 Uptter Usage (Battery)
39 Electric Adjustable Pedals
40 Climate Controls (Battery)
41 Airbag System (Ignition)
42 Amplier
43 Audio System
44 Miscellaneous (Ignition), Cruise Control
45 Tailgate Open/Close Assist
46 Airbag System (Battery)
47OnStar
®, Rear Seat Entertainment
Display
48 Instrument Panel Cluster
49 Power Take-Off
50Auxiliary Climate Control (Ignition),
Compass-Temperature Mirror
51Center High-Mounted Stoplamp
(CHMSL)
614

Fuses Usage
52 Rear Defogger
53 Heated Mirrors
54 SEO B1 Uptter Usage (Battery)
55 Cigarette Lighter, Auxiliary Power Outlet
56Automatic Level Control Compressor
Relay, SEO Uptter Usage
57 Climate Controls (Ignition)
58Engine Control Module, Secondary Fuel
Pump (Ignition)
J-Case Fuses Usage
59 Cooling Fan 1
60 Automatic Level Control Compressor
61 Heavy Duty Anti-lock Brake System
62 Cooling Fan 2
63 Anti-lock Brake System 1
64 Starter
65 Stud 2 (Trailer Brakes)
66 Left Bussed Electrical Center 1
67 Not Used
68 Heated Windshield Washer System
69 Four-Wheel Drive System
J-Case Fuses Usage
70Stud 1 (Trailer Connector Battery
Power) (Optional - 40A Fuse
Required)
71 Mid-Bussed Electrical Center 1
72 Climate Control Blower
73 Tailgate Open/Close Assist
74 Left Bussed Electrical Center 2
Relays Usage
FAN HI Cooling Fan High Speed
FAN LO Cooling Fan Low Speed
ENG EXH VLV Not Used
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
615

(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 airbag coverings,
and have them repaired or replaced. The
airbag system does not need regular maintenance.
(f)Lubricate all key lock cylinders, body door
hinges, hood latch assembly, secondary latch,
pivots, spring anchor, release pawl, tailgate hinges,
tailgate linkage, tailgate handle pivot points,
latch bolt, fuel 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.
(g)Check vent hose at transfer case for kinks and
proper installation. Check to be sure vent hose
is unobstructed, clear, and free of debris.(h)Change automatic transmission uid and lter
if the vehicle Gross Vehicle Weight Rating
(GVWR) is over 8600 lbs or 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. This
service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 513 for 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.
630

(k)Inspect system. Check all fuel and vapor lines
and hoses for proper hook-up, routing, and
condition. Check that the purge valve, if the vehicle
has one, works properly. Replace as needed.
(l)Extreme Duty Service: Change transfer case
uid if the vehicle is mainly driven off-road in
four-wheel drive, or is used for heavy trailer towing.
Farming, mining, forestry, and Department of
Natural Resources (DNR) vehicles meet this
denition.
(m)During any maintenance, if a power washer is
used to clean mud and dirt from the underbody,
care should be taken to not directly spray the
transfer case output seals. High pressure water can
overcome the seals and contaminate the transfer
case uid. Contaminated uid will decrease the life
of the transfer case and should be replaced.
(n)Vehicles with diesel engine or with GVWR
above 10,000 lbs (4 536 kg) only: Inspect shields
for damage or looseness. Adjust or replace as
required. This is a Noise Emission Control Service.
Applicable to vehicles sold in the United States
and recommended for vehicles sold in Canada.
(p)If you drive regularly under dusty conditions,
inspect the lter or change indicator (if equipped)
at each engine oil change.(q)Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
Owner Checks and Services
These owner checks and services should be
performed at the intervals specied to help ensure
the safety, dependability, and emission control
performance of your vehicle. Your GM
Goodwrench
®dealer can assist you with these
checks and services.
Be sure any necessary repairs are completed at
once. Whenever any uids or lubricants are added
to your vehicle, make sure they are the proper
ones, as shown inRecommended Fluids and
Lubricants on page 635.
At the First 100, 1,000 and
6,000 Miles (160, 1 600 and
10 000 km)
Check dual wheel nut torque. For proper torque,
seeCapacities and Specications on page 616.
631

Locks (cont.)
Power Door............................................. 119
Programmable Automatic Door Locks....... 119
Rear Door Security Locks........................ 120
Loss of Control........................................... 389
Low Fuel Warning Light............................... 267
Luggage Carrier.......................................... 198
Lumbar
Manual Controls......................................... 11
Power Controls.......................................... 11
M
Maintenance Schedule
Additional Required Services.................... 627
At Each Fuel Fill...................................... 632
At Least Once a Month............................ 632
At Least Once a Year.............................. 633
At the First 100, 1,000 and 6,000 Miles
(160, 1 600 and 10 000 km)................ 631
Introduction.............................................. 620
Maintenance Footnotes............................ 629
Maintenance Record................................ 640
Maintenance Requirements...................... 620
Normal Maintenance Replacement
Parts.................................................... 638Maintenance Schedule (cont.)
Owner Checks and Services.................... 631
Recommended Fluids and Lubricants....... 635
Scheduled Maintenance........................... 623
Using....................................................... 621
Your Vehicle and the Environment............ 621
Malfunction Indicator Light........................... 260
Manual Lumbar Controls............................... 11
Manual Seats.................................................. 9
Manual Windows......................................... 124
Memory Seat, Mirrors, and Pedals................ 13
Message
DIC Warnings and Messages................... 279
Mirrors
Automatic Dimming Rearview with
Compass and Temperature Display....... 173
Automatic Dimming Rearview with
OnStar
®, Compass and Temperature
Display................................................. 169
Manual Rearview Mirror........................... 169
Outside Manual Mirrors............................ 174
Outside Power Foldaway Mirrors.............. 177
Outside Power Mirrors............................. 176
Outside Trailer-Tow Mirrors....................... 175
MP3 ...................................................339, 345
MyGMLink.com............................................ 647
673

N
Navigation/Radio System, see Navigation
Manual..................................................... 355
New Vehicle Break-In.................................. 132
Noise Control System, Tampering................ 542
Normal Maintenance Replacement Parts..... 638
O
Odometer.................................................... 248
Odometer, Trip............................................ 248
Off-Road Driving.......................................... 390
Off-Road Recovery...................................... 387
Oil
Engine..................................................... 500
Pressure Gage......................................... 263
Pressure Light.......................................... 264
Oil, Engine Oil Life System......................... 503
Older Children, Restraints............................. 45
Online Owner Center................................... 647
OnStar
®System, see OnStar®Manual........ 180
Operation, Universal Home Remote
System............................................185, 189
Other Warning Devices................................ 211
Outlet Adjustment........................................ 245Outlets
Accessory Power..................................... 232
Outside
Manual Mirrors......................................... 174
Power Foldaway Mirrors........................... 177
Power Mirrors.......................................... 176
Trailer-Tow Mirrors................................... 175
Overheated Engine Protection
Operating Mode....................................... 519
Owner Checks and Services....................... 631
Owners, Canadian.......................................... 3
P
Paint, Damage............................................ 605
Park Aid...................................................... 228
Park (P)
Shifting Into............................................. 163
Shifting Out of......................................... 165
Parking
Assist....................................................... 228
Brake....................................................... 162
Over Things That Burn............................ 166
Passenger Airbag Status Indicator............... 252
Passenger Sensing System........................... 97
Passing....................................................... 387
674

Tires (cont.)
If a Tire Goes Flat................................... 576
Ination - Tire Pressure............................ 559
Inspection and Rotation............................ 565
Installing the Spare Tire........................... 582
Pressure Monitor System......................... 561
Removing the Flat Tire............................. 582
Removing the Spare Tire and Tools......... 578
Secondary Latch System......................... 589
Spare Tire................................................ 596
Storing a Flat or Spare Tire and Tools..... 592
Tire Sidewall Labeling.............................. 551
Tire Terminology and Denitions............... 556
Uniform Tire Quality Grading.................... 571
Wheel Alignment and Tire Balance........... 572
Wheel Replacement................................. 573
When It Is Time for New Tires................. 568
Tow/Haul Mode........................................... 144
Tow/Haul Mode Light................................... 266
Towing
Recreational Vehicle................................. 439
Towing a Trailer....................................... 445
Your Vehicle............................................. 439
Traction
StabiliTrak
®System................................. 381Trailer
Recommendations.................................... 482
Transmission
Fluid, Automatic....................................... 508
Transmission Operation, Automatic.............. 138
Trip Odometer............................................. 248
Truck-Camper Loading Information.............. 436
Turn and Lane-Change Signals................... 213
Turn Signal/Multifunction Lever.................... 212
U
Ultrasonic Rear Parking Assist (URPA)........ 228
Understanding Radio Reception................... 369
Uniform Tire Quality Grading....................... 571
Universal Home Remote System................. 185
Operation........................................185, 189
System Identication................................ 184
V
Vehicle
Control..................................................... 378
Damage Warnings....................................... 5
Loading.................................................... 425
Symbols...................................................... 5
679