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Headlamp Aiming
The vehicle has a visual optical headlamp aimingsystem. The aim of the headlamps have been preset atthe factory and should need no further adjustment.
However, if the vehicle is damaged in a crash, the aimof the headlamps may be affected and adjustment maybe necessary.
If oncoming vehicles flash their high beams at you, thismay mean the vertical aim of your headlamps needs tobe adjusted.
It is recommended that the vehicle is taken to yourdealer/retailer for service if the headlamps need to beadjusted. It is possible however, to re-aim theheadlamps as described.
The vehicle should:
.Be placed so the headlamps are 25 ft. (7.6 m) froma light colored wall or other flat surface.
.Have all four tires on a level surface which is levelall the way to the wall or other flat surface.
.Be placed so it is perpendicular to the wall or otherflat surface.
.Not have any snow, ice, or mud on it.
.Be fully assembled and all other work stoppedwhile headlamp aiming is being performed.
.Be normally loaded with a full tank of fuel and oneperson or 160 lbs (75 kg) sitting on the driver seat.
.Have the tires properly inflated.
.Have the spare tire is in its proper location in thevehicle.
Headlamp aiming is done with the vehicle's low-beamheadlamps. The high-beam headlamps will be correctlyaimed if the low-beam headlamps are aimed properly.
To adjust the vertical aim:
1. Open the hood. SeeHood Releaseon page 7!15for more information.
2. Locate the center ofthe projector lens ofthe low!beamheadlamp.
3. Record the distance from the ground to the centerof the projector lens of the low!beam headlamp.
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Federal Communications Commission
(FCC) and Industry and Science Canada
SeeRadio Frequency Statementon page 9!20forinformation regarding Part 15 of the FederalCommunications Commission (FCC) Rules andRSS-210/211 of Industry and Science Canada.
Tire Pressure Monitor Operation
If your vehicle is a Two!mode Hybrid, see theTwo!mode Hybrid manual for more information.
This vehicle may have a Tire Pressure Monitor System(TPMS). The TPMS is designed to warn the driver whena low tire pressure condition exists. TPMS sensors aremounted onto each tire and wheel assembly, excludingthe spare tire and wheel assembly. The TPMS sensorsmonitor the air pressure in the vehicle's tires andtransmit the tire pressure readings to a receiver locatedin the vehicle.
When a low tire pressurecondition is detected, theTPMS illuminates the lowtire pressure warning lightlocated on the instrumentpanel cluster.
At the same time a message to check the pressure in aspecific tire appears on the Driver Information Center(DIC) display. The low tire pressure warning light andthe DIC warning message come on at each ignitioncycle until the tires are inflated to the correct inflationpressure. Using the DIC, tire pressure levels can beviewed by the driver. For additional information anddetails about the DIC operation and displays seeDICOperation and Displayson page 4!41andDICWarnings and Messages on page 4!48.
The low tire pressure warning light may come on in coolweather when the vehicle is first started, and then turnoff as you start to drive. This could be an early indicatorthat the air pressure in the tire(s) are getting low andneed to be inflated to the proper pressure.
A Tire and Loading Information label, attached to yourvehicle, shows the size of your vehicle's originalequipment tires and the correct inflation pressure foryour vehicle's tires when they are cold. SeeLoading theVehicleon page 6!32, for an example of the Tire andLoading Information label and its location on yourvehicle. Also seeInflation - Tire Pressure on page 7!65.
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When It Is Time for New Tires
Various factors, such as maintenance, temperatures,driving speeds, vehicle loading, and road conditions,influence when you need new tires.
One way to tell when it istime for new tires is tocheck the treadwearindicators, which appearwhen your tires have only1/16 inch (1.6 mm) or lessof tread remaining. Somecommercial truck tiresmay not have treadwearindicators.
You need new tires if any of the following statementsare true:
.You can see the indicators at three or moreplaces around the tire.
.You can see cord or fabric showing throughthe tire's rubber.
.The tread or sidewall is cracked, cut, or snaggeddeep enough to show cord or fabric.
.The tire has a bump, bulge, or split.
.The tire has a puncture, cut, or other damage thatcannot be repaired well because of the size orlocation of the damage.
The rubber in tires degrades over time, even if they arenot being used. This is also true for the spare tire,if your vehicle has one. Multiple conditions affect howfast this aging takes place, including temperatures,loading conditions, and inflation pressure maintenance.With proper care and maintenance tires will typicallywear out before they degrade due to age. If you areunsure about the need to replace your tires as they getolder, consult the tire manufacturer for more information.
Buying New Tires
GM has developed and matched specific tires for yourvehicle. The original equipment tires installed on yourvehicle, when it was new, were designed to meetGeneral Motors Tire Performance Criteria Specification(TPC spec) system rating. If you need replacementtires, GM strongly recommends that you get tires withthe same TPC Spec rating. This way, your vehicle willcontinue to have tires that are designed to give thesame performance and vehicle safety, during normaluse, as the original tires.
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Removing the Flat Tire and Installing
the Spare Tire
1. Do a safety check before proceeding. SeeChanging a Flat Tireon page 7!80for moreinformation.
2. To remove the center cap, place the chiseled endof the wheel wrench in the slot on the wheel andgently pry the cap out.
3. Use the wheel wrench to loosen all the wheel nuts.Turn the wheel wrench counterclockwise to loosenthe wheel nuts. Do not remove the wheel nuts yet.
Jacking Locations (Overall View)
A. Front Position
B. Rear Position
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{WARNING:
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack, you
could be badly injured or killed. Never get under a
vehicle when it is supported only by a jack.
{WARNING:
Raising your vehicle with the jack improperly
positioned can damage the vehicle and even
make the vehicle fall. To help avoid personal
injury and vehicle damage, be sure to fit the jack
lift head into the proper location before raising the
vehicle.
4. Position the jack under the vehicle as shown.
Front Position
Front Tire Flat:If the flat tire is on a front tire ofthe vehicle, you will need to use the jack handleand only one jack handle extension. Attach thewheel wrench to the jack handle extension. Attachthe jack handle to the jack (A). Position the jack onthe frame behind the flat tire where the framesections overlap. Turn the wheel wrench clockwiseto raise the vehicle. Raise the vehicle far enoughoff the ground so there is enough room for thespare tire to clear the ground.
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