coolant temperature CADILLAC ESCALADE 2007 3.G User Guide

Turn Signals When Towing a Trailer
The arrows on your instrument panel will
ash whenever you signal a turn or lane change.
Properly hooked up, the trailer lamps will also
ash, telling other drivers you’re about to
turn, change lanes or stop.
When towing a trailer, the arrows on your
instrument panel will ash for turns even if the bulbs
on the trailer are burned out. Thus, you may think
drivers behind you are seeing your signal when
they are not. It’s important to check occasionally to
be sure the trailer bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower gearbefore
you start down a long or steep downgrade. If you
don’t shift down, you might have to use your
brakes so much that they would get hot and no
longer work well.You can tow in DRIVE (D). You may want to shift
the transmission to THIRD (3) or, if necessary,
a lower gear selection if the transmission shifts
too often (e.g., under heavy loads and/or hilly
conditions).
You may also want to activate the tow/haul
mode if the transmission shifts too often.
See “Tow/Haul Mode” earlier.
When towing at high altitude on steep uphill
grades, consider the following: Engine coolant at
or near sea level will boil at a lower temperature
than at higher altitudes. If you turn your engine
off immediately after towing at high altitude
on steep uphill grades, your vehicle may show
signs similar to engine overheating. To avoid this,
let the engine run while parked (preferably on
level ground) with the automatic transmission
in PARK (P) for at least ve minutes before
turning the engine off. If you do get the overheat
warning, seeEngine Overheating on page 422.
389

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 238.
In addition, the messages ENGINE OVERHEATED
STOP ENGINE, ENGINE OVERHEATED IDLE
ENGINE, or ENGINE POWER IS REDUCED could
appear in the Driver Information Center (DIC) on
the instrument panel. SeeDIC Warnings and
Messages on page 250.
If Steam Is Coming From Your Engine
{CAUTION:
Steam from an overheated engine can
burn you badly, even if you just open the
hood. Stay away from the engine if you
see or hear steam coming from it. Just
turn it off and get everyone away from the
vehicle until it cools down. Wait until
there is no sign of steam or coolant
before you open the hood.
If you keep driving when your engine is
overheated, the liquids in it can catch re.
You or others could be badly burned.
Stop your engine if it overheats, and get
out of the vehicle until the engine is cool.
SeeOverheated Engine Protection
Operating Mode on page 424for
information on driving to a safe place in
an emergency.
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.
430

(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.(k)If you drive regularly under dusty conditions,
inspect the lter at each engine oil change.
(l)Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
(m)Check vent hose at transfer case for kinks
and proper installation.
Owner Checks and Services
These owner checks and services should be
performed at the intervals specied to help ensure
the safety, dependability, and emission control
performance of your vehicle. Your GM
Goodwrench
®dealer can assist you with these
checks and services.
Be sure any necessary repairs are completed at
once. Whenever any uids or lubricants are added
to your vehicle, make sure they are the proper
ones, as shown inRecommended Fluids and
Lubricants on page 531.
527

Cleaning (cont.)
Windshield, Backglass, and
Wiper Blades........................................ 502
Wood Panels........................................... 499
Climate Control System
Dual Automatic......................................... 220
Outlet Adjustment..................................... 225
Rear Air Conditioning and Heating
System, Electronic................................ 226
Clock.......................................................... 219
Collision Damage Repair............................. 552
Comfort Guides, Rear Safety Belt................. 56
Compass............................................157, 159
Content Theft-Deterrent............................... 135
Control of a Vehicle..................................... 326
Convenience Net......................................... 181
Coolant
Engine Temperature Gage........................ 238
Heater, Engine......................................... 143
Surge Tank Pressure Cap........................ 422
Cooled Seats................................................ 12
Cooling System........................................... 425
Cruise Control............................................. 202
Cruise Control Light.................................... 243
Cupholder(s)................................................ 178Customer Assistance Information
Courtesy Transportation........................... 549
Customer Assistance for Text
Telephone (TTY) Users ......................... 543
Customer Assistance Offices.................... 544
Customer Satisfaction Procedure.............. 540
GM Mobility Reimbursement Program...... 545
Reporting Safety Defects to
General Motors..................................... 557
Reporting Safety Defects to the
Canadian Government.......................... 556
Reporting Safety Defects to the
United States Government.................... 556
Roadside Service..................................... 545
Service Publications Ordering
Information........................................... 557
D
Daytime Running Lamps............................. 210
Defensive Driving........................................ 322
Delayed Locking.......................................... 124
Differential, Locking..................................... 329
Doing Your Own Service Work.................... 397
Dome Lamp Override.................................. 213
Dome Lamps............................................... 212
562

Door
Delayed Locking...................................... 124
Locks....................................................... 123
Power Door Locks................................... 124
Programmable Automatic Door Locks....... 124
Rear Door Security Locks........................ 124
Driver
Position, Safety Belt................................... 43
Driver Information Center (DIC)................... 245
DIC Operation and Displays..................... 245
DIC Vehicle Customization....................... 259
DIC Warnings and Messages................... 250
Driving
At Night................................................... 354
City.......................................................... 358
Defensive................................................. 322
Drunken................................................... 323
Freeway................................................... 359
Hill and Mountain Roads.......................... 362
In Rain and on Wet Roads...................... 355
Off-Road.................................................. 338
Recovery Hooks....................................... 369
Rocking Your Vehicle to Get it Out.......... 368
Winter...................................................... 364
Dual Automatic Climate Control System....... 220
DVD
Rear Seat Entertainment System............. 303E
Electrical System
Add-On Equipment................................... 506
Center Instrument Panel Fuse Block........ 510
Fuses and Circuit Breakers...................... 507
Instrument Panel Fuse Block................... 507
Power Windows and Other Power
Options................................................. 507
Underhood Fuse Block............................. 511
Windshield Wiper Fuses........................... 507
Engine
Air Cleaner/Filter...................................... 412
Battery..................................................... 436
Check and Service Engine Soon Light..... 239
Coolant.................................................... 419
Coolant Heater......................................... 143
Coolant Temperature Gage...................... 238
Drive Belt Routing.................................... 534
Engine Compartment Overview ................ 406
Exhaust................................................... 155
Fan Noise................................................ 430
Oil ........................................................... 407
Oil Life System........................................ 410
Overheated Protection Operating Mode.... 424
563

Engine (cont.)
Overheating............................................. 422
Starting.................................................... 141
Entry Lighting.............................................. 213
Event Data Recorders (EDR)...................... 551
Exit Lighting................................................ 213
Extender, Safety Belt..................................... 59
Exterior Lamps............................................ 205
F
Filter
Engine Air Cleaner................................... 412
Finish Damage............................................ 504
Flashers, Hazard Warning........................... 194
Flat Tire...................................................... 476
Flat Tire, Changing...................................... 476
Flat Tire, Storing......................................... 492
Fluid
Automatic Transmission............................ 415
Power Steering........................................ 430
Windshield Washer.................................. 431
Fog Lamp Light........................................... 243
Fog Lamps.................................................. 212
Front Axle................................................... 445Fuel............................................................ 398
Additives.................................................. 399
California Fuel.......................................... 399
Filling a Portable Fuel Container.............. 403
Filling Your Tank...................................... 401
Fuels in Foreign Countries....................... 400
Gage....................................................... 244
Gasoline Octane...................................... 398
Gasoline Specications............................ 398
Fuses
Center Instrument Panel Fuse Block........ 510
Fuses and Circuit Breakers...................... 507
Instrument Panel Fuse Block................... 507
Underhood Fuse Block............................. 511
Windshield Wiper..................................... 507
G
Gage
Engine Coolant Temperature.................... 238
Fuel......................................................... 244
Speedometer........................................... 230
Tachometer.............................................. 230
Garage Door Opener..........................167, 168
Garment Hooks........................................... 179
564