fuel cap GMC SIERRA CLASSIC 2007 User Guide

When replacing the fuel cap, turn it clockwise until it
clicks. It will require more effort to turn the fuel cap
on the last turn as you tighten it. Make sure the
cap is fully installed. The diagnostic system can
determine if the fuel cap has been left off or
improperly installed. This would allow fuel to
evaporate into the atmosphere. SeeMalfunction
Indicator Lamp on page 258.
The TIGHTEN FUEL CAP message will be
displayed on the Driver Information Center (DIC) if
the fuel cap is not properly installed. SeeDIC
Warnings and Messages on page 270for more
information.
{CAUTION:
If a re starts while you are refueling, do
not remove the nozzle. Shut off the ow
of fuel by shutting off the pump or by
notifying the station attendant. Leave the
area immediately.
Notice:If you need a new fuel cap, be sure to
get the right type. Your dealer can get one
for you. If you get the wrong type, it may not
t properly. This may cause your malfunction
indicator lamp to light and may damage
your fuel tank and emissions system. See
Malfunction Indicator Lamp on page 258.
476

Cold Tire Pressure:The amount of air pressure
in a tire, measured in pounds per square inch
(psi) or kilopascals (kPa) before a tire has built up
heat from driving. SeeInation - Tire Pressure
on page 551.
Curb Weight:This means the weight of a motor
vehicle with standard and optional equipment
including the maximum capacity of fuel, oil, and
coolant, but without passengers and cargo.
DOT Markings:A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identication Number (TIN),
an alphanumeric designator which can also identify
the tire manufacturer, production plant, brand,
and date of production.
GVWR:Gross Vehicle Weight Rating. See
Loading Your Vehicle on page 409.
GAWR FRT:Gross Axle Weight Rating for the
front axle. SeeLoading Your Vehicle on page 409.
GAWR RR:Gross Axle Weight Rating for the
rear axle. SeeLoading Your Vehicle on page 409.Intended Outboard Sidewall:The side of an
asymmetrical tire, that must always face outward
when mounted on a vehicle.
Kilopascal (kPa):The metric unit for air pressure.
Light Truck (LT-Metric) Tire:A tire used on
light duty trucks and some multipurpose passenger
vehicles.
Load Index:An assigned number ranging from
1 to 279 that corresponds to the load carrying
capacity of a tire.
Maximum Ination Pressure:The maximum air
pressure to which a cold tire may be inated.
The maximum air pressure is molded onto
the sidewall.
Maximum Load Rating:The load rating for a tire
at the maximum permissible ination pressure
for that tire.
Maximum Loaded Vehicle Weight:The sum of
curb weight, accessory weight, vehicle capacity
weight, and production options weight.
Normal Occupant Weight:The number of
occupants a vehicle is designed to seat multiplied
by 150 lbs (68 kg). SeeLoading Your Vehicle
on page 409.
549

Vehicle Maximum Load on the Tire:Load on
an individual tire due to curb weight, accessory
weight, occupant weight, and cargo weight.
Vehicle Placard:A label permanently attached to
a vehicle showing the vehicle’s capacity weight
and the original equipment tire size and
recommended ination pressure. See “Tire and
Loading Information Label” underLoading
Your Vehicle on page 409.
Ination - Tire Pressure
Tires need the correct amount of air pressure to
operate effectively.
Notice:Do not let anyone tell you that
under-ination or over-ination is all right.
It is not. If your tires do not have enough air
(under-ination), you can get the following:
Too much exing
Too much heat
Tire overloading
Premature or irregular wear
Poor handling
Reduced fuel economyIf your tires have too much air (over-ination),
you can get the following:
Unusual wear
Poor handling
Rough ride
Needless damage from road hazards
A Tire and Loading Information label is attached
to the vehicle’s center pillar (B-pillar), below the
driver’s door lock post (striker). This label lists
your vehicle’s original equipment tires and their
recommended cold tire ination pressures. The
recommended cold tire ination pressure, shown
on the label, is the minimum amount of air pressure
needed to support your vehicle’s maximum load
carrying capacity.
For additional information regarding how much
weight your vehicle can carry, and an example
of the tire and loading information label, see
Loading Your Vehicle on page 409.
When to Check
Check your tires once a month or more. Do not
forget to check the spare tire. For additional
information regarding the spare tire, seeSpare
Tire on page 588.
551

ApplicationCapacities
English Metric
8.1L V8 HD Automatic* 25.0 qt 23.7 L
8.1L V8 Automatic* 26.9 qt 25.5 L
8.1L V8 Manual* 27.1 qt 25.6 L
* Engine Fan Driven cooling system
** Electric Cooling Fan system
Transmission
Automatic Four Speed 4L80-E 7.7 qt 7.3 L
Automatic Four Speed 4L60-E and 4L70–E 5.0 qt 4.7 L
Automatic Six Speed Allison 7.4 qt 7.0 L
2WD Manual Five Speed Getrag 2.5 qt 2.3 L
4WD Manual Five Speed Getrag 2.2 qt 2.0 L
2WD Manual Five Speed New Venture Gear 4.0 qt 3.8 L
Engine Oil with Filter
4.3L V6 4.5 qt 4.3 L
4.8L V8; 5.3L V8; 6.0L V8 6.0 qt 5.7 L
8.1L V8 6.5 qt 6.1 L
Fuel Tank
Short Bed and 2500 LD 26.0 gal 98.0 L
Long Bed and Chassis Cab (Pickup Box Delete) 34.0 gal 128.7 L
Chassis Cab 3500 and 3500HD — front 27.0 gal 102.0 L
Chassis Cab 3500 and 3500HD — rear 23.0 gal 87.0 L
610

ApplicationCapacities
English Metric
Transfer Case Fluid 2.0 qt 1.9 L
Wheel Nut Torque 140 ft lb
190Y
After rell, the level must be rechecked. Add enough engine coolant so that the uid is within the proper operating
range.
Engine Specications
Engine VIN Code Transmission Spark Plug Gap
VORTEC™ 4.3L V6 XAutomatic
Manual0.060 inches (1.52 mm)
VORTEC™ 4.8L V8 VAutomatic
Manual0.040 inches (1.01 mm)
VORTEC™ 5.3L V8 Flex Fuel Z Automatic 0.040 inches (1.01 mm)
VORTEC™ 5.3L V8 T Automatic 0.040 inches (1.01 mm)
VORTEC™ 5.3L V8 B Automatic 0.040 inches (1.01 mm)
VORTEC™ 6.0L V8 UAutomatic
Manual0.040 inches (1.01 mm)
VORTEC™ 6.0L V8 NAutomatic
Manual0.040 inches (1.01 mm)
VORTEC™ 8.1L V8 GAutomatic
Manual0.060 inches (1.52 mm)
611

(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.(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 502 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.
624

(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

Bulb Replacement (cont.)
Headlamps............................................... 533
License Plate Lamps................................ 541
Pickup Box Identication and Fender
Marker Lamps...................................... 538
Replacement Bulbs.................................. 541
Roof Marker Lamps................................. 535
Taillamps, Turn Signal, Stoplamps
and Back-up Lamps.............................. 539
Buying New Tires........................................ 556
C
Calibration..........................................176, 180
California Fuel............................................. 471
California Proposition 65 Warning................ 469
Canadian Owners........................................... 3
Capacities and Specications...................... 609
Carbon Monoxide..............127, 174, 402, 429
Care of
Safety Belts............................................. 592
Your Cassette Tape Player....................... 350
Your CD and DVD Player........................ 352
Your CDs and DVDs................................ 352
Cargo Lamp................................................ 228
Center Console Storage Area...................... 202Center Front Passenger Position,
Safety Belts............................................... 37
Center High-Mounted Stoplamp
(CHMSL) and Cargo Lamp...................... 537
Chains, Tire................................................. 562
Check
Engine Light............................................ 258
Checking Things Under the Hood ................ 478
Chemical Paint Spotting .............................. 596
Child Restraints
Child Restraint Systems............................. 51
Infants and Young Children........................ 47
Lower Anchors and Tethers
for Children............................................ 58
Older Children........................................... 44
Securing a Child Restraint in a
Rear Seat Position................................. 71
Securing a Child Restraint in the
Center Front Seat Position..................... 74
Securing a Child Restraint in the Right
Front Seat Position (Crew Cab).............. 74
Securing a Child Restraint in the Right
Front Seat Position (Regular and
Extended Cab)................................ 78, 85
Where to Put the Restraint........................ 55
Chime Level Adjustment .............................. 353
661