sensor CADILLAC XLR 2009 1.G Owner's Manual

If a tire goes at, you will not need to stop on the side
of the road to change the tire. You can just keep on
driving. The shorter the distance you drive and the
slower the speed, the greater the chance that the tire
will not have to be replaced. If you drive on a deated
run-at tire for 25 miles (40 km) or less and at speeds of
55 mph (90 km/h) or less, there is a good chance that
the tire can be repaired. The tire can operate effectively
with no air pressure for up to 100 miles (160 km) at
speeds up to 55 mph (90 km/h), but the tire would then
have to be replaced. When a tire is lled with air, it
provides a cushion between the road and the wheel.
Because you will not have this cushion when driving on
a deated tire, try to avoid potholes that could damage
your wheel and require replacement of it.
Some road hazards can damage a tire beyond repair.
This damage could occur even before you have driven on
the tire in a deated condition. When a tire has been
damaged, or if you have driven any distance on a run-at
tire, check with an authorized run-at tire service center
to determine whether the tire can be repaired or should
be replaced. To maintain your vehicle’s run-at feature,
all replacement tires must be self-supporting tires. As
soon as possible, contact the nearest authorized GM or
run-at servicing facility for inspection and repair orreplacement. To locate the nearest GM or run-at
servicing facility, call Roadside Assistance. For phone
numbers and Roadside Service details seeRoadside
Service on page 8-7.
{CAUTION:
Run-at tires are constructed differently than other
tires and could explode during improper service.
You or others could be injured or killed if you
attempt to repair, replace, dismount, or mount a
run-at tire. Let only an authorized run-at service
center repair, replace, dismount, and mount
run-at tires.
The valve stems on your run-at tires have sensors that
are part of the Tire Pressure Monitor System (TPMS).
SeeTire Pressure Monitor System on page 6-55. These
sensors contain batteries which are designed to last
for 10 years under normal driving conditions. See your
dealer/retailer if you ever need to have a wheel
replaced, or if the sensors ever need replacement.
6-53

When to Check
Check your tires once a month or more.
How to Check
Use a good quality pocket-type gage to check tire
pressure. You cannot tell if your tires are properly
inated simply by looking at them. Radial tires
may look properly inated even when they are
under-inated. Check the tire’s ination pressure
when the tires are cold. Cold means your vehicle
has been sitting for at least three hours or driven
no more than 1 mile (1.6 km).
Remove the valve cap from the tire valve stem.
Press the tire gage rmly onto the valve to
get a pressure measurement. If the cold tire
ination pressure matches the recommended
pressure on the Tire and Loading Information
label, no further adjustment is necessary. If the
ination pressure is low, add air until you reach
the recommended amount.If you overll the tire, release air by pushing on
the metal stem in the center of the tire valve.
Re-check the tire pressure with the tire gage.
Be sure to put the valve caps back on the valve
stems. They help prevent leaks by keeping out dirt
and moisture.
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radio
and sensor technology to check tire pressure levels.
The TPMS sensors monitor the air pressure in your
vehicle’s tires and transmit tire pressure readings to a
receiver located in the vehicle.
Each tire, including the spare (if provided), should be
checked monthly when cold and inated to the ination
pressure recommended by the vehicle manufacturer
on the vehicle placard or tire ination pressure label.
(If your vehicle has tires of a different size than the size
indicated on the vehicle placard or tire ination
pressure label, you should determine the proper tire
ination pressure for those tires.)
6-55

Federal Communications Commission
(FCC) and Industry and Science Canada
The Tire Pressure Monitor System (TPMS) operates
on a radio frequency and complies with Part 15 of
the FCC Rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
The TPMS operates on a radio frequency and complies
with RSS-210 of Industry and Science Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
Tire Pressure Monitor Operation
This vehicle may have a Tire Pressure Monitor
System (TPMS). The TPMS is designed to warn the
driver when a low tire pressure condition exists. TPMS
sensors are mounted onto each tire and wheel
assembly on your vehicle. The TPMS sensors monitor
the air pressure in the vehicle’s tires and transmits
the tire pressure readings to a receiver located in the
vehicle.
When a low tire pressure
condition is detected, the
TPMS illuminates the low
tire pressure warning light,
located in the instrument
panel cluster.
6-57

At the same time a message to check the pressure in a
specic tire appears on the Driver Information Center
(DIC) display. The low tire pressure warning light
and the DIC warning message appear at each ignition
cycle until the tires are inated to the correct ination
pressure. Using the DIC, tire pressure levels can
be viewed by the driver. For additional information and
details about the DIC operation and displays see
DIC Operation and Displays on page 3-57andDIC
Warnings and Messages on page 3-60.
The low tire pressure warning light may come on in cool
weather when the vehicle is rst started, and then
turn off as you start to drive. This could be an early
indicator that the air pressure in the tire(s) are getting
low and need to be inated to the proper pressure.A Tire and Loading Information label, attached to your
vehicle, shows the size of your vehicle’s original
equipment tires and the correct ination pressure for
your vehicle’s tires when they are cold. SeeLoading the
Vehicle on page 5-21, for an example of the Tire and
Loading Information label and its location on your
vehicle. Also seeInflation - Tire Pressure on page 6-54
for additional information.
Your vehicle’s TPMS can warn you about a low tire
pressure condition but it does not replace normal
tire maintenance. SeeTire Inspection and Rotation on
page 6-60,When It Is Time for New Tires on page 6-61,
andTires on page 6-46.
Notice:Liquid tire sealants could damage the Tire
Pressure Monitor System (TPMS) sensors. Sensor
damage caused by using a tire sealant is not covered
by your warranty. Do not use liquid tire sealants.
6-58

TPMS Malfunction Light and Message
The TPMS will not function properly if one or more of the
TPMS sensors are missing or inoperable. When the
system detects a malfunction, the low tire warning light
ashes for about one minute and then stays on for the
remainder of the ignition cycle. A DIC warning message
is also displayed. The low tire warning light and DIC
warning message come on at each ignition cycle until the
problem is corrected. Some of the conditions that can
cause the malfunction light and DIC message to come
on are:
The TPMS sensor matching process was not done
or not completed successfully. The DIC message
should go off after successfully completing the
sensor matching process.
One or more TPMS sensors are missing or
damaged. Under these conditions the TPMS
malfunction light (low tire warning light) comes on,
and at the same time the DIC message is displayed.
The DIC message and TPMS malfunction light
should go off once the TPMS sensors are installed
and the sensor matching process is performed
successfully.
Replacement tires or wheels do not match your
vehicle’s original equipment tires or wheels. Tires
and wheels other than those recommended for your
vehicle could prevent the TPMS from functioning
properly. SeeBuying New Tires on page 6-62.
Operating electronic devices or being near facilities
using radio wave frequencies similar to the TPMS
could cause the TPMS sensors to malfunction.
If the TPMS is not functioning it cannot detect or
signal a low tire condition. See your dealer/retailer
for service if the TPMS malfunction light and DIC
message comes on and stays on.
TPMS Sensor Matching Process
Each TPMS sensor has a unique identication code.
Any time you replace one or more of the TPMS sensors
or rotate your vehicle’s tires, the identication 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.
6-59

Tire Inspection and Rotation
We recommend that you regularly inspect your
vehicle’s tires for signs of wear or damage.
SeeWhen It Is Time for New Tires on page 6-61
for additional information.
If your vehicle has P235/50R18 size tires they
should be rotated any time you notice unusual
wear. Rotate the tires as soon as possible and
check wheel alignment. Also check for damaged
tires or wheels. SeeWhen It Is Time for New Tires
on page 6-61andWheel Replacement on
page 6-66.
When rotating P235/50R18 size tires, always use
the correct rotation pattern shown here.After the tires have been rotated, adjust the front
and rear ination pressures as shown on the Tire
and Loading Information label, seeInflation - Tire
Pressure on page 6-54andLoading the Vehicle on
page 5-21. Vehicles that have the Tire Pressure
Monitor System (TPMS) need the TPMS sensors
reset after a tire rotation is performed. A special tool
is needed to reset the sensor identication codes.
See your dealer/retailer for service. Make certain
that all wheel nuts are properly tightened. See
Wheel Replacement on page 6-66and “Wheel Nut
Torque” underCapacities and Specifications on
page 6-90
.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel could
come off and cause a crash. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the
vehicle. In an emergency, you can use a
cloth or a paper towel to do this; but be sure
to use a scraper or wire brush later, if you
need to, to get all the rust or dirt off.
6-60

{CAUTION:
When the TIRE FLAT MAX SPD 55, REDUCED
HNDLG message is displayed on the Driver
Information Center, the vehicle’s handling
capabilities will be reduced during severe
maneuvers. If you drive too fast, you could lose
control of the vehicle. You or others could be
injured. Don’t drive over 55 mph (90 km/h) when the
TIRE FLAT MAX SPD 55, REDUCED HNDLG
message is displayed. Drive cautiously and check
the tire pressures as soon as you can.
If the TPM system detects a tire pressure below
5 psi (34 kPa), the TIRE FLAT MAX SPD 55, REDUCED
HNDLG warning message is displayed on the Driver
Information Center (DIC). SeeDIC Operation and
Displays on page 3-57andDIC Warnings and Messages
on page 3-60for information and details about the DIC
operation and displays.
{CAUTION:
Special tools and procedures are required to
service a run-at tire. If these special tools and
procedures are not used you or others could be
injured and the vehicle could be damaged. Always
be sure the proper tools and procedures, as
described in the service manual, are used.
Notice:Using liquid sealants can damage the tire
valves and tire pressure monitor sensors in the
vehicle’s run-at tires. This damage would not be
covered by warranty. Do not use liquid sealants
in the vehicle’s run-at tires.
To order a service manual, seeService Publications
Ordering Information on page 8-15.
If a tire goes at, the stability control system will turn on
automatically even if it was disabled by the driver. When
a at tire condition exists the Stabilitrak
®system cannot
be turned off. SeeStabiliTrak®System on page 5-6.
6-73

Fuses Usage
CLSTR/HUDInstrument Panel Cluster, Heads-up
Display (HUD)
COLUMN LK
MDLNot Used
DECK LID
CLOSE/PRK/
BRK BTrunk Close Button, Parking Brake
Solenoid B
DR LOCKS Door Locks
ECM Engine Control Module
EMPTY Not Used
EMPTY Not Used
EMPTY Not Used
EMPTY Not Used
EMPTY Not Used
FOLDING
TOP/TRUNK
LATCHRetractable Hardtop, Trunk Latch
FUSE PULLER Fuse Puller
GMLAN
DEVICESGMLAN Devices
HTD STR WHL Heated Steering Wheel
HTD/SEAT LH Driver Side Heated Seat
HTD/SEAT RH Passenger Side Heated Seat
HVAC/PWR
SNDClimate Control System, Power
SounderFuses Usage
IGN SW/INTR
SNSRIgnition Switch, Intrusion Sensor
INTERIOR
LIGHTSInterior Lights
ISRVM/HVACInside Rearview Mirror, Climate
Control System, Column Lock,
Power Sounder
ONSTAR OnStar
®
PRK/BRK
SOL AParking Brake Solenoid A
PWR FLDG
MIR-EXT/RETPower Folding Mirror
PWR LUMBAR
LH/RHPower Lumbar
RADIO/S-BAND/
VICSRadio, S-Band, CD Changer
REAR
FOG/ALDLRear Fog Lamps, Diagnostic Link
Connector
REVERSE
LAMPReverse Lamp
REVERSE
LAMPSReverse Lamps
RPA/H/C
SEAT/WPR
RELAYSRear Park Aid, Heated/Cooled
Seats, Windshield Wiper Relays
RUN/ACSRY
PWRRun, Accessory Power
6-85

Fuses Usage
4 Windshield Wipers
5 Stop/Back-Up Lamps
6 Oxygen Sensor
7 Battery 5
8 Parking Lamps
9 Electronic Throttle Control
10 Fuel Pump
11 Antilock Brake System
12 Odd Injectors
13 Electronic Suspension Control
14 Emission Controls
15 Air Conditioning Compressor
16 Even Injectors
17Windshield Washer, Adaptive
Forward Lighting System (AFS),
Intercooler Pump
18 Headlamp WasherFuses Usage
19 Right Low Beam Headlamp
20 Not Used
21 Left Low Beam Headlamp
22 Fog Lamp
23 Right High Beam Headlamp
24 Left High Beam Headlamp
25 Cooling Fan
26 Battery 3
27 Antilock Brakes
28 Climate Controls
29 Battery 2
30 Starter
31 Audio Amplier
32 Not Used
33 Battery 1
48 Spare
6-88