wiring CADILLAC ESCALADE EXT 2003 2.G Owners Manual

CAUTION: (Continued)
death. If you must drive with the cargo covers
on and the tailgate and midgate open or if
electrical wiring or other cable connections
must pass through the seal between the body
and the midgate:
·Make sure all windows are shut.
·Turn the fan on your heating or cooling
system to its highest speed with the
setting on OUTSIDE AIR. That will force
outside air into your vehicle. See ªClimate
Control Systemº in the Index.
·If you have air outlets on or under the
instrument panel, open them all the way.
See ªEngine Exhaustº in the Index.
Midgate Operation
Your vehicle is equipped with a midgate and a removable
rear glass panel. The midgate allows you to extend the
length of your vehicle's cargo area.The following are the main components of the midgate
system:
A. Latch Levers
B. Grab Handles
C. Glass-Catch
Release Button
D. Glass Lock KnobsE. Window Retaining
Tabs
F. Midgate Release
Handle
G. Window Alignment
Arrows
2-13

Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows the air bag symbol. The system
checks the air bag's electrical system for malfunctions.
The light tells you if there is an electrical problem.
The system check includes the air bag sensors, the air
bag modules, the wiring and the crash sensing and
diagnostic module. For more information on the air bag
system, see
Air Bag Systems on page 1-50.
This light will come on
when you start your
vehicle, and it will ¯ash for
a few seconds. Then the
light should go out.
This means the system
is ready.
If the air bag readiness light stays on after you start the
vehicle or comes on when you are driving, your air
bag system may not work properly. Have your vehicle
serviced right away.
{CAUTION:
If the air bag readiness light stays on after you
start your vehicle, it means the air bag system
may not be working properly. The air bags in
your vehicle may not in¯ate in a crash, or they
could even in¯ate without a crash. To help
avoid injury to yourself or others, have your
vehicle serviced right away if the air bag
readiness light stays on after you start your
vehicle.
The air bag readiness light should ¯ash for a few
seconds when you turn the ignition key to RUN. If the
light doesn't come on then, have it ®xed so it will
be ready to warn you if there is a problem.
3-34

Trailer Wiring Harness
Heavy-Duty Trailer Wiring Package
Your vehicle is equipped with the seven-wire trailer
towing harness. This harness with a seven-pin universal
heavy-duty trailer connector is attached to a bracket
on the hitch platform.The Center High-Mounted Stoplamp (CHMSL) wire is
tied next to the trailer wiring harness for use with a
trailer.
The seven-wire harness contains the following
trailer circuits:
·Yellow: Left Stop/Turn Signal
·Dark Green: Right Stop/Turn Signal
·Brown: Taillamps
·White: Ground
·Light Green: Back-up Lamps
·Red: Battery Feed
·Dark Blue: Trailer Brake
If your trailer is equipped with electric brakes, you can
get a jumper harness (electric trailer brake control)
with a trailer battery feed fuse from your dealer. If you
need to tow a light-duty trailer with a standard four-way
round connector you can also get an adaptor from
your dealer.
4-61

Electrical System
Add-On Electrical Equipment
Notice:Don't add anything electrical to your vehicle
unless you check with your dealer ®rst. Some
electrical equipment can damage your vehicle and
the damage wouldn't be covered by your warranty.
Some add-on electrical equipment can keep other
components from working as they should.
Your vehicle has an air bag system. Before attempting to
add anything electrical to your vehicle, see
Servicing
Your Air Bag-Equipped Vehicle on page 1-64.
Windshield Wiper Fuses
The windshield wiper motor is protected by an internal
circuit breaker and a fuse. If the motor overheats due to
heavy snow, etc., the wiper will stop until the motor
cools. If the overload is caused by some electrical
problem and not snow, etc., be sure to get it ®xed.
Power Windows and Other Power
Options
Circuit breakers protect the power windows and other
power accessories. When the current load is too heavy,
the circuit breaker opens and closes, protecting the
circuit until the problem is ®xed or goes away.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and fusible thermal links. This greatly reduces the
chance of ®res caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical
size and rating.
If you ever have a problem on the road and don't have
a spare fuse, you can borrow one that has the same
amperage. Just pick some feature of your vehicle
that you can get along without ± like the radio or
cigarette lighter ± and use its fuse, if it is the correct
amperage. Replace it as soon as you can.
5-101

Fuses Usage
LOCKS Power Door Lock System
ECCRear Electronic Climate
Control, Liftgate
TBC 2C Truck Body Controller
FLASH Flasher Module
CB LT DOORSLeft Power Window
Circuit Breaker
TBC 2B Truck Body Controller
TBC 2A Truck Body ControllerCenter Instrument Panel Fuse Block
The center instrument panel utility block is located
underneath the instrument panel, to the left of the
steering column.
Device Usage
SEO Special Equipment Option
TRAILER Trailer Brake Wiring
UPFIT Up®tter (Not Used)
5-104

Device Usage
SL RIDERide Control Harness
Connection
HDLR 2 Headliner Wiring Connector
BODY Body Wiring Connector
DEFOG Rear Defogger Relay
HDLNR 1 Headliner Wiring Connector 1
SPARE RELAY Not Used
CB SEATDriver and Passenger Seat
Module Circuit Breaker
CB RT DOORRight Power Window Circuit
Breaker
SPARE Not Used
INFOInfotainment Harness
ConnectionUnderhood Fuse Block
The underhood fuse block in the engine compartment
on the driver's side of the vehicle near the battery.
Lift the cover for access to the fuse/relay block.
To remove fuses, hold the end of the fuse between your
thumb and index ®nger and pull straight out.
See
Engine Compartment Overview on page 5-12for
more information on its location.
5-105

*1Ð Gasoline Engine and Fuel Injection Rail #2.
*2Ð Gasoline Engine and Fuel Injection Rail #1.
*3Ð Gasoline Engine; Oxygen Sensors.
*4Ð Gasoline Engine; Oxygen Sensors.
*5Ð PCM Ignition
Fuses Usage
GLOW PLUG Not Used
CUST FEED Accessory Power
STUD #1 Auxiliary Power
MBECMid Bussed Electrical Center
Power Feed, Front Seats,
Right Doors
BLOWER Front Climate Control Fan
LBECLeft Bussed Electrical
Center, Door Modules,
Door Locks, Auxiliary Power
Outlet Ð Rear Cargo Area
and Instrument Panel
STUD 2Accessory Power/Trailer
Wiring Brake Feed
Fuses Usage
ABS Anti-Lock Brakes
VSES/ECAS Vehicle Stability
IGN A Ignition Power
IGN B Ignition Power
LBEC 1Left Bussed Electrical Center,
Left Doors, Truck Body
Controller, Flasher Module
TRL PARK Parking Lamps Trailer Wiring
RR PARKRight Rear Parking and
Sidemarker Lamps
LR PARKLeft Rear Parking and
Sidemarker Lamps
PARK LP Parking Lamps Relay
STARTER Starter Relay
INTPARK Interior Lamps
STOP LP Stoplamps
TBC BATTTruck Body Controller
Battery Feed
5-107

Fuses Usage
SUNROOF Sunroof
SEO B2 Off-Road Lamps
4WSVent Solenoid
Canister/Quadrasteer Module
Power
RR HVAC Rear Climate Control
AUX PWRAuxiliary Power
Outlet Ð Console
IGN 1 Ignition Relay
PCM 1 Powertrain Control Module
ETC/ECMElectronic Throttle Control,
Electronic Brake Controller
IGN EInstrument Panel Cluster,
Air Conditioning Relay,
Turn Signal/Hazard Switch,
Starter Relay
RTD Ride Control
TRL B/U Backup Lamps Trailer Wiring
PCM BPowertrain Control Module,
Fuel PumpFuses Usage
F/PMP Fuel Pump (Relay)
B/U LPBack-up Lamps, Automatic
Transmission Shift Lock
Control System
RR DEFOG Rear Window Defogger
HDLP-HI Headlamp High Beam Relay
PRIME Not Used
SIRSupplemental In¯atable
Restraint System
FRT PARKFront Parking Lamps,
Sidemarker Lamps
DRLDaytime Running Lamps
(Relay)
SEO IGN Rear Defog Relay
TBC IGN1 Truck Body Controller Ignition
HI HDLP-LT High Beam Headlamp-Left
LH HIDLeft Hand High Intensity
Discharge Lamps
DRL Daytime Running Lamps
5-108

TIGHTEN FUEL CAP......................................3-61
Tilt Wheel........................................................ 3-7
Tire In¯ation Check.........................................6-11
Tires.............................................................5-66
Buying New Tires........................................5-70
Chains.......................................................5-74
Changing a Flat Tire....................................5-76
If a Tire Goes Flat.......................................5-75
In¯ation Ð Tire Pressure..............................5-67
Inspection and Rotation................................5-68
Spare Tire..................................................5-92
Uniform Tire Quality Grading.........................5-71
Wheel Alignment and Tire Balance.................5-72
Wheel Replacement.....................................5-73
When It Is Time for New Tires......................5-69
To Use the Engine Coolant Heater....................2-31
Top Drain Grates ± Removal and Cleaning.........2-67
Top Strap Anchor Location...............................1-41
Top Strap......................................................1-40
Top-Box Storage.............................................2-70
Torque Lock...................................................2-38
Total Weight on Your Vehicle's Tires..................4-56
Tow/Haul Mode Light.......................................3-45
Tow/Haul Mode Selector Button........................2-34
Towing..........................................................4-48
Recreational Vehicle.....................................4-48
Towing a Trailer..........................................4-52
Your Vehicle...............................................4-48Towing (cont.)
Traction Control Operation................................4-11
TRACTION SYS LIMITED................................3-63
Traction.........................................................3-39
Off Light.....................................................3-39
Road Sensing Suspension.............................. 4-9
Stabilitrak
žSystem......................................4-10
Trailer Brakes.................................................4-57
Trailer Wiring Harness.....................................4-61
Trailer...........................................................4-51
Recommendations.......................................4-51
TRANS HOT IDLE ENGINE.............................3-62
Transfer Case................................................5-50
TRANSMISSION HOT.....................................3-62
Transmission Operation, Automatic....................2-32
Transmission, Transaxle, Transfer Case Unit
Repair Manual............................................7-10
Transmission..................................................5-21
Fluid, Automatic...........................................5-21
Temperature Gage.......................................3-40
Transportation Options...................................... 7-8
Traveling to Remote Areas...............................4-20
Trip Information Button....................................3-48
Truck-Camper Loading Information....................4-51
Turn and Lane Change Signals.......................... 3-8
TURN SIGNAL ON.........................................3-61
Turn Signal/Multifunction Lever........................... 3-7
Turn Signals When Towing a Trailer..................4-58
16