2009 CADILLAC DTS check oil

At Least Once a Month
Tire Ination Check
Inspect the vehicle’s tires and make sure they are
inated to the correct pressures. Do not forget to
check the spare tire. SeeInflation - Tire Pressure on
page 5-57. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-74.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation on
page 5-65.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the vehicle
could move suddenly. If the vehicle moves, you or
others could be injured.
1. Before starting this check, be sure there is enough
room around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-32.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The vehicle
should start only in P (Park) or N (Neutral). If the
vehicle starts in any other position, contact your
dealer/retailer for service.
6-9

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 the 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.
Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name, part
number, or specication can be obtained from your
dealer/retailer.
Usage Fluid/Lubricant
Engine OilThe engine requires a special
engine oil meeting GM Standard
GM4718M. Oils meeting this
standard can be identied as
synthetic, and should also be
identied with the American
Petroleum Institute (API) Certied
for Gasoline Engines starburst
symbol. However, not all synthetic
API oils with the starburst symbol
will meet this GM standard.
Look for and use only oil that meets
GM Standard GM4718M. For the
proper viscosity, seeEngine Oil
on page 5-13.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 5-23.
6-11

Driving (cont.)
Highway Hypnosis.......................................4-14
Hill and Mountain Roads..............................4-15
In Rain and on Wet Roads...........................4-12
Loss of Control...........................................4-10
Off-Road Recovery......................................4-10
Rocking Your Vehicle to Get it Out.................4-19
Winter........................................................4-16
Driving for Better Fuel Economy......................... 4-2
Dual Climate Control System............................3-40
E
EDR .............................................................7-17
Electrical Equipment
Add-On Equipment......................................5-94
Electrical System
Fuses and Circuit Breakers...........................5-95
Headlamp Wiring.........................................5-95
Power Windows and Other Power Options......5-95
Rear Underseat Fuse Block..........................5-98
Underhood Fuse Block.................................5-95
Windshield Wiper Fuses...............................5-95
Electronic Immobilizer
PASS-Key
®III+...........................................2-22Electronic Immobilizer Operation
PASS-Key
®III+...........................................2-23
Engine
Air Cleaner/Filter.........................................5-17
Check and Service Engine Soon Lamp...........3-61
Compartment Overview................................5-12
Coolant......................................................5-23
Coolant Heater............................................2-28
Coolant Temperature Gage...........................3-60
Coolant Temperature Warning Light................3-59
Cooling System...........................................5-22
Drive Belt Routing.......................................6-14
Exhaust.....................................................2-36
Oil .............................................................5-13
Oil Life System...........................................5-16
Overheated Protection Operating Mode...........5-30
Overheating................................................5-28
Starting......................................................2-26
Entry Lighting.................................................3-35
eporting Safety Defects to the
United States Government............................7-15
Event Data Recorders.....................................7-18
Extender, Safety Belt.......................................1-32
Exterior Lamps...............................................3-29
Exterior Lighting Battery Saver..........................3-34
5

N
Navigation System, Privacy..............................7-19
Navigation/Radio System,
see Navigation Manual...............................3-116
Net
Convenience...............................................2-63
New Vehicle Break-In......................................2-24
O
Object Detection, Side Blind Zone Alert (SBZA) . . . 2-45
Odometer......................................................3-52
Off-Road
Recovery....................................................4-10
Oil
Engine.......................................................5-13
Engine Oil Life System.................................5-16
Pressure Light.............................................3-64
Older Children, Restraints................................1-33
Online Owner Center........................................ 7-5
OnStar, Privacy..............................................7-19
OnStar
®System, see OnStar®Manual...............2-51
Operation, Universal Home Remote System........2-55
Outlet Adjustment............................................3-46
Outlets
Accessory Power.........................................3-38Outside
Automatic Dimming Mirror.............................2-40
Convex Mirror.............................................2-41
Heated Mirrors............................................2-41
Power Foldaway Mirrors...............................2-40
Overheated Engine Protection Operating Mode....5-30
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Paint, Damage...............................................5-93
Parade Dimming.............................................3-35
Park
Shifting Into................................................2-33
Shifting Out of............................................2-34
Park Aid........................................................2-42
Park Tilt Mirrors..............................................2-41
Parking
Assist........................................................2-42
Over Things That Burn.................................2-35
Parking Brake................................................2-32
Passenger Airbag Status Indicator.....................3-55
Passenger Compartment Air Filter.....................3-48
Passenger Sensing System..............................1-64
Passing.........................................................4-10
PASS-Key
®III+ Electronic Immobilizer...............2-22
10