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10-40 Vehicle Care
RelaysUsage
FAN
MAIN RLY Cooling Fan Main
Relay
FAN
CTRL RLY Cooling Fan
Control Relay
FAN
AUX RLY Cooling Fan
Auxiliary Relay
PWR/
TRN RLY Engine Control
Module/CAM,
Canister, Injectors,
Electronic Throttle
Control Relay
STRTR RLY Starter Relay RUN RLY Run Relay
A/C
CLTCH RLY Air Conditioning
Compressor Relay
WPR
SPD RLY Windshield Wiper
Speed Relay Relays
Usage
HORN RLY Horn Relay WPR
CNTRL RLY Windshield Wiper
Control Relay
T/LAMP RLY Parking Lamp Relay
HDLP
HI RLY High-Beam
Headlamp Relay
HDLP
LO RLY Low‐Beam
Headlamp Relay
FRT
FOG RLY Front Foglamp
Relay
STOP
LP RLY Stoplamp Relay
DEFOG RLY Defogger RelayInstrument Panel Fuse
Block
The instrument panel fuse block is
located on the passenger side of the
lower console.
Pull the latch of the fuse box cover
straight back to access the fuses.
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Vehicle Care 10-41
Fuses Usage
PWR SEAT Power Seat
PASS
P/WIN Passenger Side
Power Window Fuses Usage
DRIV
P/WIN Driver Side Power
Window
S/ROOF Sunroof Module Fuses Usage
CIGAR Cigarette Lighter
ECM/TCM Engine Control
Module (ECM)/
Transmission
Control
Module (TCM)
FSCM Fuel Storage Control
Module
ISRVM Inside Rearview
Mirror
CLUSTER Instrument Panel
Cluster
AIR BAG Airbag System
OSRVM Outside Rearview
Mirror
KEY CAP Key Capture
Solenoid
WHL S/W Steering Wheel
Switch
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10-46 Vehicle Care
(F) Tire Size:A combination of
letters and numbers define a
tire's width, height, aspect ratio,
construction type, and service
description. The letter T as the
first character in the tire size
means the tire is for temporary
use only.
(G) TPC Spec (Tire
Performance Criteria
Specification)
:Original
equipment tires designed to
GM's specific tire performance
criteria have a TPC specification
code molded onto the sidewall.
GM's TPC specifications meet
or exceed all federal safety
guidelines.
Tire Designations
Tire Size
The following illustration shows
an example of a typical
passenger vehicle tire size.
(A) Passenger (P‐Metric) Tire:
The United States version of
a metric tire sizing system.
The letter P as the first
character in the tire size
means a passenger vehicle
tire engineered to standards
set by the U.S. Tire and Rim
Association.
(B) Tire Width
:The three‐digit
number indicates the tire section
width in millimeters from
sidewall to sidewall. (C) Aspect Ratio
:A two‐digit
number that indicates the tire
height‐to‐width measurements.
For example, if the tire size
aspect ratio is 60, as shown in
item C of the illustration, it would
mean that the tire's sidewall is
60 percent as high as it is wide.
(D) Construction Code
:
A letter code is used to indicate
the type of ply construction in
the tire. The letter R means
radial ply construction; the
letter D means diagonal or bias
ply construction; and the letter B
means belted‐bias ply
construction.
(E) Rim Diameter
:Diameter of
the wheel in inches.
(F) Service Description
:These
characters represent the load
index and speed rating of the
tire. The load index represents
the load carry capacity a tire is
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10-56 Vehicle Care
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identification code. Any time you
replace one or more of the TPMS
sensors or rotate the vehicle's tires,
the identification codes will need to
be matched to the new tire/wheel
position. The sensors are matched,
to the tire/wheel positions, in the
following order: driver side front tire,
passenger side front tire, passenger
side rear tire, and driver side rear
tire using a TPMS diagnostic tool.
See your dealer/retailer for service.
The TPMS sensors can also be
matched to each tire/wheel position
by increasing or decreasing the
tire's air pressure. When increasing
the tire's pressure, do not exceed
the maximum inflation pressure
indicated on the tire's sidewall.To decrease the tire's air-pressure
use the pointed end of the valve
cap, a pencil-style air pressure
gage, or a key.
You have two minutes to match
each tire and wheel position. If it
takes longer than two minutes to
match any tire and wheel position,
the matching process stops and
you will need to start over.
The TPMS matching process is
outlined below:
1. Set the parking brake.
2. Turn the ignition switch to
ON/RUN with the engine off.
3. Press and hold the RKE transmitter's Lock and Unlock
buttons at the same time, for
about three seconds. The horn
will sound twice to indicate the
receiver is ready for the sensor
matching process to begin. 4. Start with the driver side front
tire. The driver side turn signal
lamp comes on.
5. Remove the valve cap from the tire's valve stem. Activate the
TPMS sensor by increasing or
decreasing the tire's air pressure
for five seconds, or until a horn
chirp sounds. The horn chirp,
which may take up to
30 seconds to sound, confirms
that the sensor identification
code has been matched to the
tire/wheel position.
6. Proceed to the passenger side front tire. The passenger side
front turn signal lamp comes on.
Repeat the procedure in Step 5.
7. Proceed to the passenger side rear tire. The passenger side
rear turn signal lamp comes on.
Repeat the procedure in Step 5.
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10-66 Vehicle Care
If a tire goes flat, avoid further tire
and wheel damage by driving slowly
to a level place. Turn on the hazard
warning flashers. SeeHazard
Warning Flashers on page 6‑3.
{WARNING
Changing a tire can be
dangerous. The vehicle can slip
off the jack and roll over or fall on
you or other people. You and they
could be badly injured or even
killed. Find a level place to
change your tire. To help prevent
the vehicle from moving:
1. Set the parking brake firmly.
2. Put an automatic transmission shift lever in
P (Park), or shift a manual
transmission to 1 (First) or
R (Reverse).
(Continued)
WARNING (Continued)
3. Turn off the engine and donot restart while the vehicle
is raised.
4. Do not allow passengers to remain in the vehicle.
To be certain the vehicle will not
move, put blocks at the front and
rear of the tire farthest away
from the one being changed.
That would be the tire on the
other side, at the opposite end of
the vehicle. When the vehicle has a flat tire (B),
use the following example as a
guide to assist you in the placement
of wheel blocks (A).
A. Wheel Block
B. Flat Tire
The following information explains
how to repair or change a tire.
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Vehicle Care 10-75
4. Open the hood on the othervehicle and locate the
positive (+) and negative (−)
terminal locations on that
vehicle.
Open the hood on your vehicle
and find the remote positive (+)
and remote negative (−) jump
starting terminals.
Your vehicle is equipped with a
remote positive (+) terminal.
This is located in the engine
compartment on the driver side of the vehicle, on the underhood
fuse block. See
Engine
Compartment Overview
on
page 10‑6for more information
on location.
To uncover the remote
positive (+) terminal, press the
tab on the bottom of the fuse
block and lift the cover up.
The remote negative (-) terminal
is a stud on the driver side near
the underhood fuse block.
Place the negative (-) jumper
cable clamp on the negative (-)
terminal on top of the battery.
{WARNING
An electric fan can start up even
when the engine is not running
and can injure you. Keep hands,
clothing and tools away from any
underhood electric fan.
{WARNING
Using an open flame near a
battery can cause battery gas to
explode. People have been hurt
doing this, and some have been
blinded. Use a flashlight if you
need more light.
Be sure the battery has enough
water. You do not need to add
water to the battery installed in
your new vehicle. But if a battery
has filler caps, be sure the right
amount of fluid is there. If it is low,
add water to take care of that
first. If you do not, explosive gas
could be present.
Battery fluid contains acid that
can burn you. Do not get it on
you. If you accidentally get it in
your eyes or on your skin, flush
the place with water and get
medical help immediately.
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10-76 Vehicle Care
{WARNING
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running.
5. Check that the jumper cables do not have loose or missing
insulation. If they do, you could
get a shock. The vehicles could
also be damaged.
Before you connect the cables,
here are some basic things you
should know. Positive (+) will go
to positive (+) or to a remote
positive (+) terminal if the vehicle
has one. Negative (−) will go to a
heavy, unpainted metal engine
part or to a remote negative (−)
terminal if the vehicle has one. Do not connect positive (+) to
negative (−) or you will get a
short that would damage the
battery and maybe other parts.
Do not connect the negative (−)
cable to the negative (−) terminal
on the dead battery because this
can cause sparks.
6. Connect the red positive (+) cable to the positive (+) terminal
on the vehicle with the dead
battery. Use a remote
positive (+) terminal if the
vehicle has one.
7. Do not let the other end touch metal. Connect it to the
positive (+) terminal of the
good battery. Use a remote
positive (+) terminal if the vehicle
has one. 8. Now connect the black
negative (−) cable to the
negative (−) terminal of the
good battery. Use a remote
negative (−) terminal if the
vehicle has one.
Do not let the other end touch
anything until the next step. The
other end of the negative (−)
cable does not go to the dead
battery. It goes to a heavy,
unpainted metal engine part or
to a remote negative (−) terminal
on the vehicle with the dead
battery.
9. Connect the other end of the negative (−) cable away from
the dead battery, but not near
engine parts that move.
The electrical connection is just
as good there, and the chance
of sparks getting back to the
battery is much less.
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Vehicle Care 10-77
10. Now start the vehicle with thegood battery and run the
engine for a while.
11. Press the unlock symbol on the remote keyless entry
transmitter to disarm your
security system, if equipped.
12. Try to start the vehicle that had the dead battery. If it will not
start after a few tries, it
probably needs service.
Notice: If the jumper cables are
connected or removed in the
wrong order, electrical shorting
may occur and damage the
vehicle. The repairs would not be
covered by the vehicle warranty.
Always connect and remove the
jumper cables in the correct
order, making sure that the
cables do not touch each other
or other metal.
Jumper Cable Removal
A. Heavy, Unpainted Metal Engine Part or Remote Negative (−)
Terminal
B. Good Battery or Remote Positive (+) and Remote
Negative (−) Terminals
C. Dead Battery or Remote Positive (+) Terminal To disconnect the jumper cables
from both vehicles, do the following:
1. Disconnect the black
negative (−) cable from the
vehicle that had the dead
battery.
2. Disconnect the black negative (−) cable from the
vehicle with the good battery.
3. Disconnect the red positive (+) cable from the vehicle with the
good battery.
4. Disconnect the red positive (+) cable from the other vehicle.
5. Return the underhood fuse block cover to its original position,
if applicable.
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