coolant temperature CADILLAC ESCALADE EXT 2007 3.G User Guide

Consistency of Readings
Always check the uid level at least twice using
the procedures described. Consistency (repeatable
readings) is important to maintaining proper uid
level. If uid is added, it may take 15 minutes
or longer to obtain an accurate reading because of
residual uid draining down the dipstick tube.
If inconsistent readings persist, check the
transmission breather to be sure it is clean and
not clogged. If readings are still inconsistent,
contact your dealer.
Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is
designed to remain in your vehicle for ve years or
150,000 miles (240 000 km), whichever occurs
rst, if you add only DEX-COOL
®extended
life coolant.
The following explains your cooling system and
how to add coolant when it is low. If you have
a problem with engine overheating, seeEngine
Overheating on page 422.A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to−34°F
(−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they
should.
Notice:Using coolant other than DEX-COOL
®
may cause premature engine, heater core,
or radiator corrosion. In addition, the engine
coolant may require changing sooner, at
the rst maintenance service after each
30,000 miles (50 000 km) or 24 months,
whichever occurs rst. Any repairs would not
be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your
vehicle.
419

Coolant Surge Tank Pressure Cap
Notice:If the pressure cap is not tightly
installed, coolant loss and possible engine
damage may occur. Be sure the cap is properly
and tightly secured.
The coolant surge tank pressure cap must be fully
installed on the coolant surge tank. SeeEngine
Compartment Overview on page 406for more
information on location.
Engine Overheating
You will nd a coolant temperature gage on your
vehicle’s instrument panel. SeeEngine Coolant
Temperature Gage on page 235.
In addition, you will nd an ENGINE
OVERHEATED STOP ENGINE, ENGINE
OVERHEATED IDLE ENGINE, and an ENGINE
POWER IS REDUCED message in the Driver
Information Center (DIC) on the instrument panel.
SeeDIC Warnings and Messages on page 248.
422

5. Then replace the pressure cap. Be sure the
pressure cap is hand-tight and fully seated.
6. Verify coolant level after engine is shut off
and the coolant is cold. If necessary, repeat
coolant ll procedure Steps 1 through 6.
Engine Fan Noise
Your vehicle has electric cooling fans, you may
hear the fans spinning at low speed during
most everyday driving. The fans may turn off if no
cooling is required. Under heavy vehicle loading,
trailer towing, and/or high outside temperatures, or
if you are operating your air conditioning system,
the fans may change to high speed and you
may hear an increase in fan noise. This is normal
and indicates that the cooling system is
functioning properly. The fans will change to low
speed when additional cooling is no longer
required.
Power Steering Fluid
SeeEngine
Compartment Overview
on page 406for
reservoir location.
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.
431

(e)Make sure the safety belt reminder light and all
your belts, buckles, latch plates, retractors, and
anchorages are working properly. Look for
any other loose or damaged safety belt system
parts. If you see anything that might keep a safety
belt system from doing its job, have it repaired.
Have any torn or frayed safety belts replaced. Also
look for any opened or broken airbag coverings,
and have them repaired or replaced. The
airbag system does not need regular maintenance.
(f)Lubricate all key lock cylinders, hood latch
assembly, secondary latch, pivots, spring anchor,
release pawl, rear compartment hinges, outer
tailgate handle pivot points, latch bolt, fuel door
hinge, and 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)Inspect system. Check all fuel and vapor lines
and hoses for proper hook-up, routing, and
condition. Check that the purge valve works
properly, if equipped. Replace as needed.(h)Change automatic transmission uid and lter
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 found in taxi, police, or delivery
service.
(i)Drain, ush, and rell cooling system. This
service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 419 for what to use. Inspect
hoses. Clean radiator, condenser, pressure cap,
and ller neck. Pressure test the cooling
system and pressure cap.
(j)A uid loss in any vehicle system could indicate
a problem. Have the system inspected and
repaired and the uid level checked. Add uid if
needed.
528

Climate Control System
Dual Automatic......................................... 219
Outlet Adjustment..................................... 224
Clock.......................................................... 218
Collision Damage Repair............................. 556
Comfort Guides, Rear Safety Belt................. 35
Compass............................................143, 145
Content Theft-Deterrent............................... 118
Control of a Vehicle..................................... 326
Coolant
Engine Temperature Gage........................ 235
Heater, Engine......................................... 128
Surge Tank Pressure Cap........................ 422
Cooled Seats................................................ 11
Cooling System........................................... 426
Cruise Control............................................. 201
Cruise Control Light.................................... 241
Cupholder(s)................................................ 166
Customer Assistance Information
Courtesy Transportation........................... 552
Customer Assistance for Text
Telephone (TTY) Users......................... 546
Customer Assistance Offices.................... 546
Customer Satisfaction Procedure.............. 542
GM Mobility Reimbursement Program...... 547
Reporting Safety Defects to
General Motors..................................... 561Customer Assistance Information (cont.)
Reporting Safety Defects to the
Canadian Government.......................... 561
Reporting Safety Defects to the
United States Government.................... 560
Roadside Service..................................... 548
Service Publications Ordering
Information........................................... 562
D
Daytime Running Lamps............................. 209
Defensive Driving........................................ 322
Delayed Locking.......................................... 102
Differential, Locking..................................... 329
Doing Your Own Service Work.................... 398
Dome Lamp Override.................................. 212
Dome Lamps............................................... 212
Door
Delayed Locking...................................... 102
Locks....................................................... 101
Power Door Locks................................... 102
Programmable Automatic Door Locks....... 102
Rear Door Security Locks........................ 103
Driver
Position, Safety Belt................................... 23
568

Driver Information Center (DIC)................... 243
DIC Operation and Displays..................... 243
DIC Vehicle Customization....................... 257
DIC Warnings and Messages................... 248
Driving
At Night................................................... 355
City.......................................................... 360
Defensive................................................. 322
Drunken................................................... 323
Freeway................................................... 361
Hill and Mountain Roads.......................... 364
In Rain and on Wet Roads...................... 356
Off-Road.................................................. 339
Recovery Hooks....................................... 371
Rocking Your Vehicle to Get it Out.......... 370
Winter...................................................... 366
Dual Automatic Climate Control System....... 219
DVD
Rear Seat Entertainment System............. 302
E
Electrical System
Add-On Equipment................................... 509
Center Instrument Panel Fuse Block........ 512
Fuses and Circuit Breakers...................... 509
Instrument Panel Fuse Block................... 510Electrical System (cont.)
Power Windows and Other Power
Options................................................. 509
Underhood Fuse Block............................. 513
Windshield Wiper Fuses........................... 509
Engine
Air Cleaner/Filter...................................... 412
Battery..................................................... 437
Check and Service Engine Soon Light..... 236
Coolant.................................................... 419
Coolant Heater......................................... 128
Coolant Temperature Gage...................... 235
Drive Belt Routing.................................... 536
Engine Compartment Overview ................ 406
Exhaust................................................... 141
Fan Noise................................................ 431
Oil ........................................................... 407
Oil Life System........................................ 410
Overheated Protection Operating Mode.... 425
Overheating............................................. 422
Starting.................................................... 126
Entry/Exit Lighting....................................... 212
Event Data Recorders (EDR)...................... 555
Extender, Safety Belt..................................... 38
Exterior Cargo Lamps................................. 211
Exterior Lamps............................................ 204
569

F
Filter
Engine Air Cleaner................................... 412
Finish Damage............................................ 505
Fixed Mast Antenna.................................... 318
Flashers, Hazard Warning........................... 194
Flash-to-Pass.............................................. 198
Flat Tire...................................................... 476
Flat Tire, Changing...................................... 477
Flat Tire, Storing......................................... 492
Fluid
Automatic Transmission............................ 415
Power Steering........................................ 431
Windshield Washer.................................. 432
Fog Lamp Light........................................... 241
Fog Lamps.................................................. 211
Front Axle................................................... 446
Fuel............................................................ 399
Additives.................................................. 400
California Fuel.......................................... 400
Filling a Portable Fuel Container.............. 404
Filling Your Tank...................................... 402
Fuels in Foreign Countries....................... 401Fuel (cont.)
Gage....................................................... 242
Gasoline Octane...................................... 399
Gasoline Specications............................ 399
Fuses
Center Instrument Panel Fuse Block........ 512
Fuses and Circuit Breakers...................... 509
Instrument Panel Fuse Block................... 510
Underhood Fuse Block............................. 513
Windshield Wiper..................................... 509
G
Gage
Engine Coolant Temperature.................... 235
Fuel......................................................... 242
Speedometer........................................... 227
Tachometer.............................................. 227
Garage Door Opener..........................154, 155
Gasoline
Octane..................................................... 399
Specications........................................... 399
Glove Box................................................... 165
GM Mobility Reimbursement Program.......... 547
570