clock GMC SIERRA 2008 Owner's Guide

{CAUTION:
Incorrect or improperly tightened wheel nuts
can cause the wheel to come loose and even
come off. This could lead to a crash. If you
have to replace them, be sure to get new
original equipment wheel nuts. Stop
somewhere as soon as you can and have the
nuts tightened with a torque wrench to the
proper torque specication. SeeCapacities
and Specifications on page 5-130for wheel nut
torque specication.
Notice:Improperly tightened wheel nuts can lead
to brake pulsation and rotor damage. To avoid
expensive brake repairs, evenly tighten the wheel
nuts in the proper sequence and to the proper
torque specication. SeeCapacities and
Specifications on page 5-130for the wheel nut
torque specication.12. Tighten the nuts rmly in a crisscross sequence as
shown by turning the wheel wrench clockwise.
When you reinstall the regular wheel and tire, you must
also reinstall either the center cap, or bolt-on hub cap,
depending on what your vehicle is equipped with. For
center caps, place the cap on the wheel and tap it into
place until it seats ush with the wheel. The cap only
goes on one way. Be sure to line up the tab on the center
cap with the indentation on the wheel. For bolt-on hub
caps, align the plastic nut caps with the wheel nuts and
then tighten by hand. Then use the wheel wrench
to tighten.
5-104

Secondary Latch System
Your vehicle has an underbody-mounted tire hoist
assembly equipped with a secondary latch system.
It is designed to stop the spare tire from suddenly falling
off your vehicle. For the secondary latch to work, the
spare must be installed with the valve stem pointing
down. SeeStoring a Flat or Spare Tire and Tools
on page 5-108.
{CAUTION:
Before beginning this procedure read all the
instructions. Failure to read and follow the
instructions could damage the hoist assembly
and you and others could get hurt. Read and
follow the instructions listed next.To release the spare tire from the secondary latch:
1. Check under the
vehicle to see if the
cable end is visible.
If the cable is not
visible proceed
to Step 6.
2. If it is visible, rst try to tighten the cable by
turning the wheel wrench clockwise until you hear
two clicks or feel it skip twice. You cannot
overtighten the cable.
3. Loosen the cable by turning the wrench
counterclockwise three or four turns.
4. Repeat this procedure at least two times. If the
spare tire lowers to the ground, continue with
Step 5 ofRemoving the Spare Tire and Tools
on page 5-93.
5-105

5. If the spare does not lower, turn the wrench
counterclockwise until approximately 6 inches
(15 cm) of cable is exposed.
6. Stand the wheel blocks on their shortest ends, with
the backs facing each other.
7. Place the bottom edge
of the jack (A) on the
wheel blocks (B),
separating them so that
the jack is balanced
securely.
8. Attach the jack handle, extension, and wheel
wrench to the jack and place it (with the wheel
blocks) under the vehicle toward the front of the
rear bumper.
5-106

9. Position the center lift point of the jack under the
center of the spare tire.
10. Turn the wrench clockwise to raise the jack until it
lifts the end tting.
11. Continue raising the jack until the spare tire stops
moving upward and is held rmly in place. The
secondary latch has released and the spare tire is
balancing on the jack.12. Lower the jack by turning the wheel wrench
counterclockwise. Keep lowering the jack until the
spare tire slides off the jack or is hanging by
the cable.
{CAUTION:
Someone standing too close during the
procedure could be injured by the jack. If the
spare tire does not slide off the jack
completely, make sure no one is behind you or
on either side of you as you pull the jack out
from under the spare.
13. Disconnect the jack handle from the jack and
carefully remove the jack. Use one hand to push
against the spare while rmly pulling the jack out
from under the spare tire with the other hand.
If the spare tire is hanging from the cable, insert the
hoist end of extension, and wheel wrench into the
hoist shaft hole in the bumper and turn the wheel
wrench counterclockwise to lower the spare the rest
of the way.
5-107

14. Tilt the tire retainer at the end of the cable and pull
it through the wheel opening. Pull the tire out from
under the vehicle.
15. Turn the wheel wrench in the hoist shaft hole in the
bumper clockwise to raise the cable back up if the
cable is hanging under the vehicle.
Have the hoist assembly inspected as soon as you can.
You will not be able to store a spare or at tire using
the hoist assembly until it has been replaced.
To continue changing the at tire, seeRemoving the
Flat Tire and Installing the Spare Tire on page 5-98.
Storing a Flat or Spare Tire and
Tools
{CAUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision,
loose equipment could strike someone. Store
all these in the proper place.
Notice:Storing an aluminum wheel with a at tire
under your vehicle for an extended period of time or
with the valve stem pointing up can damage the
wheel. Always stow the wheel with the valve stem
pointing down and have the wheel/tire repaired
as soon as possible.
5-108

3. Attach the wheel wrench (H) and extensions (I)
together, as shown.
4. Insert the hoist end (F)
through the hole (G) in
the rear bumper and
onto the hoist shaft.
Do not use the chiseled
end of the wheel wrench.5. Raise the tire part way upward. Make sure the
retainer is seated in the wheel opening.
6. Raise the tire fully against the underside of the
vehicle by turning the wheel wrench clockwise
until you hear two clicks or feel it skip twice. You
cannot overtighten the cable.
7. Make sure the tire is stored securely. Push, pull (A),
and then try to turn (B) the tire. If the tire moves,
use the wheel wrench to tighten the cable.
8. Reinstall the spare tire lock, if the vehicle has one.
5-110

Audio System (cont.)
Navigation/Radio System, see Navigation
Manual.................................................3-112
Radio Reception........................................3-125
Rear Seat Audio (RSA)...............................3-122
Setting the Clock.........................................3-81
Theft-Deterrent Feature...............................3-123
XM™ Satellite Radio Antenna System...........3-126
Audio System(s).............................................3-84
Automatic Headlamp System............................3-19
Automatic Transmission
Fluid..................................................5-22, 5-25
Operation...................................................2-28
Auxiliary Roof Mounted Lamp Switch.................3-20
B
Battery..........................................................5-45
Electric Power Management..........................3-22
Run-Down Protection...................................3-23
Brake
Emergencies................................................ 4-5
Brakes..........................................................5-42
System Warning Light..................................3-44
Braking........................................................... 4-3
Braking in Emergencies..................................... 4-5
Break-In, New Vehicle.....................................2-22
Bulb Replacement...........................................5-59Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp............................................5-61
Halogen Bulbs............................................5-59
Headlamp Aiming........................................5-56
Headlamps.................................................5-60
License Plate Lamps....................................5-64
Pickup Box Identication and Fender
Marker Lamps.........................................5-62
Replacement Bulbs......................................5-65
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-62
Buying New Tires...........................................5-84
C
Calibration.............................................2-55, 2-57
California Fuel.................................................. 5-7
California Perchlorate Materials Requirements....... 5-5
California Proposition 65 Warning....................... 5-4
Canadian Owners................................................ ii
Capacities and Specications..........................5-130
Carbon Monoxide...................2-14, 2-53, 4-31, 4-55
Care of
Safety Belts..............................................5-115
Cargo Lamp...................................................3-22
Cargo Management System.............................2-78
CD, MP3 ............................................3-102, 3-106
Center Console Storage Area...........................2-76
2

Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp...............................................5-61
Center Seat...................................................1-12
Chains, Tire...................................................5-90
Charging System Light....................................3-43
Check
Engine Light...............................................3-48
Checking Things Under the Hood......................5-12
Chemical Paint Spotting.................................5-120
Child Restraints
Child Restraint Systems...............................1-42
Infants and Young Children...........................1-38
Lower Anchors and Tethers for Children..........1-45
Older Children.............................................1-35
Securing a Child Restraint in a Rear
Seat Position...........................................1-55
Securing a Child Restraint in the Center
Front Seat Position...................................1-57
Securing a Child Restraint in the Right Front
Seat Position...........................1-58, 1-62, 1-66
Where to Put the Restraint...........................1-44
Cigarette Lighter.............................................3-24
Cleaning
Aluminum or Chrome-Plated Wheels.............5-118
Exterior Lamps/Lenses................................5-116
Fabric/Carpet............................................5-114
Finish Care...............................................5-116
Instrument Panel, Vinyl, and Other Plastic
Surfaces...............................................5-115Cleaning (cont.)
Interior.....................................................5-112
Leather....................................................5-114
Tires........................................................5-119
Underbody Maintenance.............................5-119
Washing Your Vehicle.................................5-116
Weatherstrips............................................5-115
Windshield and Wiper Blades......................5-117
Climate Control System...........................3-25, 3-27
Dual Automatic............................................3-28
Outlet Adjustment........................................
3-33
Clock, Setting.................................................3-81
Collision Damage Repair..................................7-11
Compass...............................................2-55, 2-57
Content Theft-Deterrent....................................2-18
Control of a Vehicle.......................................... 4-3
Coolant
Engine Temperature Gage............................3-46
Heater, Engine............................................2-26
Surge Tank Pressure Cap.............................5-30
Cooling System..............................................5-34
Cruise Control................................................3-14
Cruise Control Light........................................3-52
Cupholder(s)..................................................2-75
Customer Assistance Information
Courtesy Transportation.................................. 7-9
Customer Assistance for Text
Telephone (TTY) Users............................... 7-5
Customer Assistance Offices........................... 7-5
3

P
Paint, Damage..............................................5-119
Park Aid........................................................2-63
Park Brake....................................................2-49
Park (P)
Shifting Into................................................2-50
Shifting Out of............................................2-52
Parking
Assist........................................................2-63
Over Things That Burn.................................2-53
Passenger Airbag Status Indicator.....................3-41
Passenger Sensing System..............................1-80
Passing.........................................................4-11
PASS-Key
®III+..............................................2-20
PASS-Key®III+ Operation................................2-20
Perchlorate Materials Requirements, California...... 5-5
Pickup Conversion to Chassis Cab....................4-50
Power
Door Locks.................................................2-10
Electrical System.......................................5-123
Lumbar Controls........................................... 1-5
Retained Accessory (RAP)............................2-23
Seat............................................................ 1-4
Sliding Rear Window....................................2-17
Steering Fluid.............................................5-39
Windows....................................................2-16
Privacy..........................................................7-16
Event Data Recorders..................................7-17
Navigation System.......................................7-18Privacy (cont.)
OnStar.......................................................7-18
Radio Frequency Identication.......................7-18
Programmable Automatic Door Locks.................2-11
Puddle Lamps................................................3-20
R
Radio Frequency Identication (RFID), Privacy....7-18
Radios..........................................................3-80
Radio(s)........................................................3-84
Radios
Navigation/Radio System, see Navigation
Manual.................................................3-112
Rear Seat Audio........................................3-122
Reception.................................................3-125
Setting the Clock.........................................3-81
Theft-Deterrent..........................................3-123
Rainsense™ II Wipers.....................................3-12
Reading Lamps..............................................3-22
Rear Axle......................................................5-51
Locking........................................................ 4-5
Rear Door Security Locks................................2-11
Rear Doors....................................................2-13
Rear Seat Armrest..........................................2-77
Rear Seat Audio (RSA)..................................3-122
Rear Seat Entertainment System.....................3-113
Rear Seat Operation...............................1-12, 1-13
10