2007 GMC SIERRA CLASSIC trailer

(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.
(m)Change automatic transmission uid and
external transmission 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.
(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 629.
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 609.
625

Manual Windows......................................... 129
Memory Seat and Mirrors.............................. 12
Message
DIC Warnings and Messages................... 270
Mirrors
Automatic Dimming Rearview with
Compass and Temperature Display....... 180
Automatic Dimming Rearview with
OnStar
®, Compass and Temperature
Display................................................. 176
Manual Rearview Mirror........................... 176
Outside Automatic Dimming Mirror........... 187
Outside Convex Mirror............................. 188
Outside Curb View Assist Mirrors............. 187
Outside Heated Mirrors............................ 188
Outside Manual Mirrors............................ 183
Outside Power Foldaway Mirrors.............. 186
Outside Power Mirrors............................. 185
Outside Trailer-Tow Mirrors....................... 183
Outside West Coast-Type Mirrors............. 185
MyGMLink.com............................................ 641
N
New Vehicle Break-In.................................. 134
Noise Control System, Tampering................ 531
Normal Maintenance Replacement Parts..... 632
O
Odometer.................................................... 246
Odometer, Trip............................................ 246
Off-Road Driving.......................................... 372
Off-Road Recovery...................................... 369
Oil
Engine..................................................... 486
Pressure Gage......................................... 262
Oil, Engine Oil Life System ......................... 489
Older Children, Restraints............................. 44
Online Owner Center................................... 641
OnStar
®System, see OnStar®Manual........ 189
Other Warning Devices................................ 213
Outlet Adjustment........................................ 243
Outlet(s), Accessory Power.......................... 228
Outside
Automatic Dimming Mirror........................ 187
Convex Mirror.......................................... 188
Curb View Assist Mirrors.......................... 187
Heated Mirrors......................................... 188
Manual Mirrors......................................... 183
Power Foldaway Mirrors........................... 186
Power Mirrors.......................................... 185
Trailer-Tow Mirrors................................... 183
West Coast-Type Mirrors.......................... 185
668

Tires (cont.)
Uniform Tire Quality Grading.................... 559
Wheel Alignment and Tire Balance........... 560
Wheel Replacement................................. 560
When It Is Time for New Tires................. 555
Tonneau Cover............................................ 203
Tow/Haul Mode........................................... 147
Tow/Haul Mode Light................................... 264
Towing
Power Take-Off (PTO).............................. 461
Recreational Vehicle................................. 424
Towing a Trailer....................................... 429
Your Vehicle............................................. 423
Traction
Assist System (TAS)................................ 363
Manual Selectable Ride........................... 365
Off Light.................................................. 256
Trailer
Recommendations.................................... 460
Transmission
Fluid, Automatic..............................494, 497
Fluid, Manual........................................... 500
Temperature Gage................................... 257
Up-Shift Light........................................... 254
Transmission Operation, Automatic.............. 140Transmission Operation, Manual.................. 149
Trip Odometer............................................. 246
Truck-Camper Loading Information.............. 421
Turn and Lane-Change Signals................... 214
Turn Signal/Multifunction Lever.................... 214
U
Understanding Radio Reception................... 350
Uniform Tire Quality Grading....................... 559
Universal Home Remote System........191, 192
Operation........................................193, 198
Up-Shift Light.............................................. 254
V
Vehicle
Control..................................................... 360
Damage Warnings....................................... 5
Loading.................................................... 409
Symbols...................................................... 5
Vehicle Customization, DIC......................... 282
Vehicle Data Collection and Event Data
Recorders................................................ 650
673