key CADILLAC CTS 2009 2.G Repair Manual

California Proposition 65 Warning
Most motor vehicles, including this one, contain and/or
emit chemicals known to the State of California to cause
cancer and birth defects or other reproductive harm.
Engine exhaust, many parts and systems (including
some inside the vehicle), many uids, and some
component wear by-products contain and/or emit
these chemicals.
California Perchlorate Materials
Requirements
Certain types of automotive applications, such as airbag
initiators, seat belt pretensioners, and lithium batteries
contained in remote keyless transmitters, may contain
perchlorate materials. Special handling may be
necessary. For additional information, see
www.dtsc.ca.gov/hazardouswaste/perchlorate.
Doing Your Own Service Work
{CAUTION:
You can be injured and the vehicle could be
damaged if you try to do service work on a vehicle
without knowing enough about it.
Be sure you have sufficient knowledge,
experience, the proper replacement parts,
and tools before attempting any vehicle
maintenance task.
Be sure to use the proper nuts, bolts, and
other fasteners. English and metric fasteners
can be easily confused. If the wrong fasteners
are used, parts can later break or fall off.
You could be hurt.
5-4

Power Steering Fluid
SeeEngine Compartment
Overview on page 5-14for
the location of the power
steering uid reservoir.
When to Check Power Steering Fluid
It is not necessary to regularly check power steering uid
unless you suspect there is a leak in the system or
you hear an unusual noise. A uid loss in this system
could indicate a problem. Have the system inspected
and repaired.
How to Check Power Steering Fluid
To check the power steering uid:
1. Turn the key off and let the engine compartment
cool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a
clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the uid level on
the dipstick.
The level should be between the HOT and COLD
marks. If necessary, add only enough uid to bring the
level up to the mark.
What to Use
To determine what kind of uid to use, see
Recommended Fluids and Lubricants on page 6-14.
Always use the proper uid.
Notice:Use of the incorrect uid may damage the
vehicle and the damages may not be covered by
the vehicle’s warranty. Always use the correct uid
listed inRecommended Fluids and Lubricants on
page 6-14.
5-40

The TPMS sensors can also be matched to each
tire/wheel position by increasing or decreasing the tire’s
air pressure. If increasing the tire’s air pressure, do
not exceed the maximum ination 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 the rst tire/
wheel position, and ve minutes overall, to match
all four tire/wheel positions. If it takes longer than
two minutes, to match the rst tire and wheel, or
more than ve minutes to match all four tire and wheel
positions, the matching process stops and you 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 the Remote Keyless Entry (RKE) transmitter’s
lock and unlock buttons at the same time for
approximately ve seconds. The horn sounds twice
to signal the receiver is in relearn mode and Tire
Learning Active message displays on the DIC
screen.4. Start with the driver side front tire.
5. Remove the valve cap from the valve stem.
Activate the TPMS sensor by increasing or
decreasing the tire’s air pressure for 10 seconds, or
until a horn chirp sounds. The horn chirp, which
can take up to 30 seconds to sound, conrms that
the TPMS sensor identication code has been
matched to this tire position.
6. Proceed to the passenger side front tire, and repeat
the procedure in Step 5.
7. Proceed to the passenger side rear tire, and repeat
the procedure in Step 5.
8. Proceed to the driver side rear tire, and repeat the
procedure in Step 5.
9. After hearing the conrming horn chirp, for the
driver side rear tire, the horn sounds two more
times to signal the tire learning mode is no longer
active. Turn the ignition switch to LOCK/OFF.
10. Set all four tires to the recommended air pressure
level as indicated on the tire and loading information
label.
11. Put the valve caps back on the valve stems.
5-75

Mini-Fuses Usage
BCM 2 Body Control Module 2
BCM 3 Body Control Module 3
BCM 4 Body Control Module 4
BCM 5 Body Control Module 5
SPARE Spare
BCM 6, BCM 7 Body Control Module 6 and 7
DISPLY Display
DRL RT Right Daytime Running Lamp (DRL)
DRL/WSWDaytime Running Lamps/Windshield
Washer Pump
ECM Engine Control Module (ECM)
ECM/TCM IGNECM, Transmission Control
Module (TCM), Instrument Panel
Cluster (IPC), PASS-Key III+ Module
EMIS 1 Emission 1
EMIS 2 Emission 2
EVEN COILS Even Coils
FRT FOG Front Fog Lamps
HDM WASH Headlamp Driver Module WasherMini-Fuses Usage
HORN Horn
LO BEAM
DRL LEFTLow-Beam Daytime Running
Lamps (Left)
LT HI BEAM Left High-Beam Headlamp
LT LO BEAM Left Low-Beam Headlamp
DRL/LT
LO BEAMDaytime Running Lamps / Left
Low-Beam Headlamp
LTR Cigarette Lighter
MISC IGN Ignition
NAV MTR Navigation Motor
ODD COILS Odd Coils
PED PRO Not Used
PWR MODINGPASS-Key III+ Module, Body Control
Module
RT HI BEAM Right High-Beam Headlamp
RT LO BEAM Right Low-Beam Headlamp
RT LO BEAM Right Low-Beam Headlamp
SPARE Spare
SPARE Spare
5-117

Mini-Fuses Usage
BCM 4 Body Control Module 4
BCM 5 Body Control Module 5
SPARE Spare
BCM 6, BCM 7 Body Control Module 6 and 7
DISPLY Display
DRL RT Right Daytime Running Lamp (DRL)
DRL/WSWDaytime Running Lamps/Windshield
Washer Pump
ECM Engine Control Module (ECM)
ECM/TCM IGNECM, Transmission Control
Module (TCM), Instrument Panel
Cluster (IPC), PASS-Key III+ Module
EMIS 1 Emission 1
EMIS 2 Emission 2
EVEN COILS Even Coils
FRT FOG Front Fog Lamps
HDM WASH Headlamp Driver Module Washer
HORN Horn
DRL LT Left Daytime Running Lamps
LT HI BEAM Left High-Beam Headlamp
SPARE Spare
LT LO BEAM Left Low-Beam Headlamp
LTR Cigarette Lighter
MISC IGN IgnitionMini-Fuses Usage
NAV MTR Navigation Motor
ODD COILS Odd Coils
PED PRO Not Used
PWR MODINGPASS-Key III+ Module, Body Control
Module
RT HI BEAM Right High-Beam Headlamp
RT LO BEAM Right Low-Beam Headlamp
SPARE Spare
SPARE Spare
SPARE Spare
STR/WHL/
ILLUMSteering Wheel Illumination
TCM BATTTransmission Control Module
Battery
SPARE Spare
WPR Windshield Wiper
INCLR Intercooler Pump
J-Case Fuses Usage
ABS MTR ABS Motor
BLWR Blower
SPARE Spare
FAN 1 Cooling Fan 1
FAN 2 Cooling Fan 2
5-121

Relays Usage
TRUNK/RELSE Trunk Release
UNLCK Unlock
Mini-Fuses Usage
AIRBAG Airbag System
AMP Amplier
AUX/OUTLET Auxiliary Power Outlet
CNSTR/VENT Canister Vent
DR/LCK Door Lock
ECM Engine Control Module (ECM)
FUEL/PUMP Fuel Pump
LT/POS/LP Left Position Lamp
MSM Memory Seat Module
ONSTAR OnStar
®System
PDM Passenger Door Module
RDO Audio System
RDO/SPKR Audio Speakers
REAR/FOG Not Used
RKE/
PASS-KEY/
MDLRemote Keyless Entry System,
PASS-Key III+ Theft Deterrent
Feature Module
RT/POS/LP Right Position Lamp
RT/POS/LP Right Position Lamp
RVC/SNSR Regulated Voltage Control Sensor
Mini-Fuses Usage
S/ROOF Sunroof
SPARE Spare
SPARE Spare
STOP/LP Stoplamp
THEFT/UGDOTheft Deterrent System, Universal
Home Remote System
TRUNK/RELSE Trunk Release
Circuit
BreakersUsage
LF FRT/
PWR/SEATLeft Front Power Seat
PWR CLMN Power Steering Column
PWR/WNDW Power Window
RT FRT/
PWR/SEATRight Front Power Seat
LT/REAR/
WNDWLeft Rear Window
REAR/WNDW Right Rear Window
Rear Compartment Fuse Block
(CTS-V)
The rear compartment fuse block is located on top of
the battery, on the right side of the trunk. The battery
access door must be removed to access the fuse block.
5-124

Relays Usage
FUEL/DR/
RELSENot Used
STOP/LP Stoplamp
TRUNK/RELSE Trunk Release
UNLCK Unlock
Mini-Fuses Usage
AIRBAG Airbag System
AMP Amplier
AUX/OUTLET Auxiliary Power Outlet
CNSTR/VENT Canister Vent
DR/LCK Door Lock
ECM Engine Control Module (ECM)
FUEL/PUMP Fuel Pump
LT/POS/LP Left Position Lamp
MSM Memory Seat Module
ONSTAR OnStar
®System
PDM Passenger Door Module
RDO Audio System
RDO/SPKR Audio Speakers
REAR/FOG Not Used
RKE/
PASS-KEY/
MDLRemote Keyless Entry System,
PASS-Key III+ Theft Deterrent
Feature Module
Mini-Fuses Usage
RT/POS/LP Right Position Lamp
RT/POS/LP Right Position Lamp
RVC/SNSR Regulated Voltage Control Sensor
FSCM Fuel System Control Module
SPARE Spare
SPARE Spare
STOP/LP Stoplamp
THEFT/UGDOTheft Deterrent System, Universal
Home Remote System
TRUNK/RELSE Trunk Release
Circuit
BreakersUsage
LF FRT/
PWR/SEATLeft Front Power Seat
PWR CLMN Power Steering Column
PWR/WNDW Power Window
RT FRT/
PWR/SEATRight Front Power Seat
LT/REAR/
WNDWLeft Rear Window
REAR/WNDW Right Rear Window
5-126

(f)Lubricate all key lock cylinders. Lubricate all body door
hinges. Lubricate all hinges and latches, including those
for the hood, rear compartment, console door, and any
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)If driving regularly under dusty conditions, the filter
may require replacement more often.
(h)Change automatic transmission fluid and filter 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 high performance operation.(i)Drain, flush, and refill cooling system. This service can
be complex; you should have your dealer/retailer perform
this service. See Engine Coolant on page 5-32 for what to
use. Inspect hoses. Clean radiator, condenser, pressure
cap, and filler neck. Pressure test the cooling system and
pressure cap.
(j)If using DOT-4 brake fluid only: Drain, flush, and refill
brake hydraulic system at a regular maintenance service
every two years. This service can be complex; you should
have your dealer/retailer perform this service. See Brakes
on page 5-42.
(k)A fluid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the fluid level checked. Add fluid if needed.
(l)If driving regularly under dusty conditions, inspect the
filter at each engine oil change.
(m)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.
6-9

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition to LOCK/OFF in each shift lever position.
For automatic transmission vehicles, the ignition
should turn to LOCK/OFF only when the shift
lever is in P (Park).
With the key access ignition system, the ignition
key should come out only in LOCK/OFF. See
Ignition Positions (Key Access) on page 2-31or
Ignition Positions (Keyless Access) on page 2-32.
Contact your dealer/retailer if service is required.
Parking Brake and Automatic
Transmission P (Park) Mechanism
Check
{CAUTION:
When you are doing this check, the vehicle could
begin to move. You or others could be injured and
property could be damaged. Make sure there is
room in front of the vehicle in case it begins to roll.
Be ready to apply the regular brake at once should
the vehicle begin to move.Park on a fairly steep hill, with the vehicle facing downhill.
Keeping your foot on the regular brake, set the parking
brake.
To check the parking brake’s holding ability: With the
engine running and transmission in N (Neutral),
slowly remove foot pressure from the regular brake
pedal. Do this until the vehicle is held by the parking
brake only.
To check the P (Park) mechanism’s holding ability:
With the engine running, shift to P (Park). Then
release the parking brake followed by the regular
brake.
Contact your dealer/retailer if service is required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
Tire Sealant and Compressor Kit
If the vehicle has a Tire Sealant and Compressor Kit,
check the sealant expiration date printed on the
instruction label of the kit at least once a year.
See your dealer/retailer for a replacement canister.
6-13

Usage Fluid/Lubricant
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Floor Shift
LinkageLubriplate Lubricant Aerosol
(GM Part No. U.S. 12346293,
in Canada 992723) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Rear AxleSAE 75W-90 Synthetic
Axle Lubricant
(GM Part No. U.S. 89021677,
in Canada 89021678) meeting
GM Specication 9986115.
Rear Axle
(Limited-Slip
Differential)SAE 75W-90 Synthetic
Axle Lubricant
(GM Part No. U.S. 89021677,
in Canada 89021678) meeting
GM Specication 9986115.
With a complete drain and rell
add 4 ounces (118 ml) of
Limited-Slip Axle Lubricant Additive
(GM Part No. U.S. 1052358,
in Canada 992694) where required.
SeeRear Axle on page 5-52.Usage Fluid/Lubricant
Hood Latch
Assembly,
Secondary
Latch, Pivots,
Spring
Anchor, and
Release PawlLubriplate Lubricant Aerosol
(GM Part No. U.S. 12346293,
in Canada 992723) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Hood and
Door HingesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Weatherstrip
ConditioningWeatherstrip Lubricant
(GM Part No. U.S. 3634770,
in Canada 10953518) or
Dielectric Silicone Grease
(GM Part No. U.S. 12345579,
in Canada 992887).
6-15