2007 CADILLAC ESCALADE EXT air conditioning

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

(B) Tire Width:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(C) Aspect Ratio:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is
75, as shown in item C of the light truck
(LT-Metric) tire illustration, it would mean that the
tire’s sidewall is 75% as high as it is wide.
(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire.
The letter R means radial ply construction;
the letter D means diagonal or bias ply
construction; and the letter B means belted-bias
ply construction.
(E) Rim Diameter:Diameter of the wheel in
inches.
(F) Service Description:The service description
indicates the load range and speed rating of a
tire. The load index can range from 1 to 279.
Speed ratings range from A to Z.Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic
transmission/transaxle, power steering, power
brakes, power windows, power seats, and
air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
457

Fuses Usage
5Engine Control Module, Throttle
Control
6 Right Trailer Stop/Turn Lamp
7 Front Washer
8 Oxygen Sensors
9 Anti-lock Brakes System 2
10 Trailer Back-up Lamps
11Driver’s High Intensity
Discharge Lamp
12 Engine Control Module (Battery)
13Fuel Injectors, Ignition Coils
(Right Side)
14Transmission Control Module
(Battery)
15 Vehicle Back-up Lamps
16Passenger’s Side High Intensity
Discharge Lamp
17 Air Conditioning Compressor
18 Oxygen SensorsFuses Usage
19 Transmission Controls (Ignition)
20 Fuel Pump
21 Not Used
22 Rear Washer
23Fuel Injectors, Ignition Coils
(Left Side)
24 Trailer Park Lamps
25 Driver’s Side Park Lamps
26 Passenger’s Side Park Lamps
27 Fog Lamps
28 Horn
29Passenger’s Side High-Beam
Headlamp Solenoid
30 Daytime Running Lamps
31Driver’s Side High-Beam Headlamp
Solenoid
32 Not Used
33 Sunroof
515

J-Case Fuses Usage
60 Cooling Fan 1
61 Automatic Level Control Compressor
62 Not Used
63 Cooling Fan 2
64 Anti-lock Brake System 1
65 Starter
66 Stud 2 (Trailer Brakes)
67 Left Bussed Electrical Center 1
68 Electric Running Boards
69 Heated Windshield Washer System
70 Not Used
71Stud 1 (Trailer Connector Battery
Power)
72 Mid-Bussed Electrical Center 1
73 Climate Control Blower
74 Power Liftgate Module
75 Left Bussed Electrical Center 2Relays Usage
FAN HI Cooling Fan High Speed
FAN LO Cooling Fan Low Speed
ENG EXH VLV Not Used
FAN CNTRL Cooling Fan Control
HDLP LO/HID Hi Intensity Discharge Headlamp
FOG LAMP Front Fog Lamps
A/C CMPRSR Air Conditioning Compressor
STRTR Starter
PWR/TRN Powertrain
FUEL PMP Fuel Pump
PRK LAMP Parking Lamps
REAR DEFOG Rear Defogger
RUN/CRANK Switched Power
517

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended
Fluids and Lubricants on page 533for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134aFor the Air Conditioning system refrigerant charge
amount, see the refrigerant caution label located
under the hood. Please see your dealer for more
information.
Cooling System 16.9 qt 16.0 L
Engine Oil with Filter 6.0 qt† 5.7 L†
Fuel Tank 31.5 gal 119.2 L
Transmission Fluid (Pan Removal and Filter Replacement) 6.0 qt 5.7 L
Transfer Case Fluid 1.5 qt 1.4 L
Wheel Nut Torque 140 lb ft
190Y
† Oil lter should be changed at every oil change. After rell, the level must be rechecked.
Add enough engine coolant so that the uid is within the proper operating range.
Engine Specications
Engine VIN Code Transmission Spark Plug Gap
6.2L V8 8 Automatic 0.040 in (1.01 mm)
518

Maintenance Footnotes
†The U.S. Environmental Protection Agency or
the California Air Resources Board has determined
that the failure to perform this maintenance item
will not nullify the emission warranty or limit
recall liability prior to the completion of the
vehicle’s useful life. We, however, urge that all
recommended maintenance services be performed
at the indicated intervals and the maintenance
be recorded.
#Lubricate the front suspension, steering linkage,
transmission shift linkage, and parking brake
cable guides. Control arm ball joints are
maintenance-free.
(a)Visually inspect brake lines and hoses for
proper hook-up, binding, leaks, cracks, chang,
etc. Inspect disc brake pads for wear and rotors for
surface condition. Inspect other brake parts,
including calipers, parking brake, etc.(b)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing
parts, signs of wear or lack of lubrication. Inspect
power steering lines and hoses for proper
hook-up, binding, leaks, cracks, chang, etc.
Visually check constant velocity joints, rubber
boots, and axle seals for leaks.
(c)Visually inspect hoses and have them replaced
if they are cracked, swollen, or deteriorated.
Inspect all pipes, ttings, and clamps; replace with
genuine GM parts as needed. To help ensure
proper operation, a pressure test of the cooling
system and pressure cap and cleaning the outside
of the radiator and air conditioning condenser is
recommended at least once a year.
(d)Visually inspect wiper blades for wear or
cracking. Replace wiper blades that appear worn
or damaged or that streak or miss areas of
the windshield.
527

A
Accessories and Modications..................... 397
Accessory Power Outlet(s).......................... 217
Adding Equipment to Your Airbag-Equipped
Vehicle....................................................... 85
Additives, Fuel............................................ 400
Add-On Electrical Equipment....................... 509
Adjustable Throttle and Brake Pedal............ 128
Air Cleaner/Filter, Engine............................. 412
Air Conditioning........................................... 219
Airbag
Passenger Status Indicator....................... 230
Readiness Light....................................... 229
Airbag Sensing and Diagnostic
Module (SDM).......................................... 555
Airbag System............................................... 67
Adding Equipment to Your
Airbag-Equipped Vehicle......................... 85
How Does an Airbag Restrain?.................. 76
Passenger Sensing System....................... 78
Servicing Your Airbag-Equipped Vehicle..... 84
What Makes an Airbag Inate?.................. 75
What Will You See After an Airbag
Inates?................................................. 76
When Should an Airbag Inate?................. 73
Where Are the Airbags?............................. 70All-Wheel Drive........................................... 443
All-Wheel-Drive (AWD) System.................... 333
Analog Clock............................................... 218
Antenna, Fixed Mast................................... 318
Antenna, XM™ Satellite Radio Antenna
System.................................................... 319
Anti-Lock Brake System (ABS).................... 327
Anti-Lock Brake, System Warning Light....... 234
Appearance Care
Aluminum or Chrome-Plated Wheels........ 504
Care of Safety Belts................................ 500
Chemical Paint Spotting........................... 506
Cleaning Exterior Lamps/Lenses.............. 502
Cleaning the Inside of Your Vehicle.......... 496
Fabric/Carpet........................................... 498
Finish Care.............................................. 502
Finish Damage......................................... 505
Instrument Panel, Vinyl, and Other
Plastic Surfaces.................................... 499
Leather.................................................... 499
Sheet Metal Damage............................... 505
Speaker Covers....................................... 500
Tires........................................................ 505
Underbody Maintenance........................... 506
Vehicle Care/Appearance Materials.......... 507
Washing Your Vehicle .............................. 501
565