Page 243 of 395

Downloaded from www.Manualslib.com manuals search engine If the coolant inside the coolant surge tank is boiling, don’t do anything
else until
it cools down.
A CAUTION
The coolant level
should be visible
inside
the surge tank
once the cap
has been
removed.
If it isn’t,
you may have a leak
in the radiator hoses,
heater
hoses, radiator,
water pump or
somewhere
else in the
cooling system.
Heater and radiator hoses, and other engine parts, can be very
hot. Don’t
touch them. If you do, you can be burned.
Don’t run the engine if there
is a leak. If you run the engine, it
could lose all coolant. That could cause an engine fire, and you
could be burned. Get any leak fixed before you drive the vehicle.
I NOTICE:
Engine damage if you keep running your engine without coolant
isn’t covered
by your warranty. See “Overheated Engine
Protection Operating Mode”
in the Index.
If there seems to be no leak, with the engine on check to see if the electric
engine fans are running.
If the engine is overheating, both fans should be
running. If they aren’t, your vehicle needs service.
5-16
Page 245 of 395
Downloaded from www.Manualslib.com manuals search engine ..
A CAUTION:
Adding only plain water to your cooling system can be
dangerous. Plain water, or some other liquid like alcohol, can
boil before the proper coolant mix
will. Your vehicle’s coolant
warning system
is set for the proper coolant mix. With plain
water or the
wrong mix, your engine could get too hot but you
wouldn’t get the overheat warning. Your engine could catch
fire
and you or others could be burned. Use a 50/50 mix of clean
water and
a proper antifreeze.
NOTICE:
In cold weather, water can freeze and crack the engine, radiator,
heater core
and other parts. So use the recommended coolant.
You can be burned if you spill coolant on hot engine parts.
Coolant contains ethylene glycol and it will burn if the engine
parts
are hot enough. Don’t spill coolant on a hot engine.
5-18
Page 246 of 395
Downloaded from www.Manualslib.com manuals search engine 1. You can remove
the coolant surge
tank pressure cap
when the cooling
system, including
the coolant surge
tank pressure cap
and upper radiator
hose, is
no longer
hot.
Turn the pressure
cap slowly to the left until it first stops. (Don't press
down while turning
the pressure cap.)
If you hear a hiss, wait for that to stop. A hiss means there is still some
pressure left.
2. Then keep turning the cap, but now
push down
as you
turn it. Remove
the pressure cap.
5-19
Page 282 of 395
Downloaded from www.Manualslib.com manuals search engine C
ENGINE COOLANT
The following explains your cooling system and how to add coolant when
it is low. If you have a problem with engine overheating, see “Engine
Overheating”
in the Index.
The proper coolant for your Cadillac
will:
Give freezing protection down to -34’F (-37OC).
0 Give boiling protection up to 262’F (128OC).
Protect against rust and corrosion.
Help keep the proper engine temperature.
0 Let the warning lights work as they should.
What to Use
Use a mixture of one-half clean water (preferably distilled) and one-half
antifreeze that meets
“GM Specification 1825M,” which won’t damage
aluminum parts. You can also use
a recycled coolant conforming to GM
Specification 1825M with a complete coolant flush and refill. Use GM
Engine Coolant Supplement (sealer) with any complete coolant flush and
refill. If you use this
mixture, you don’t need to add anything else.
6-23
Page 283 of 395
Downloaded from www.Manualslib.com manuals search engine If you use an improper coolant mix, your engine could overheat
and
be badly damaged. The repair cost wouldn't he covered by
your warranty. Too much water in the mix can freeze and crack
the engine, radiator, heater core and other parts.
Adding Coolant
Your cooling system when hot is under a lot of pressure. If the ENGINE
COOLANT LOW message should appear on the Driver Information
Center,
you will need to add coolant.
If the ENGINE COOLANT LOW message does not appear, the coolant
is at the proper fill level.
6-24
Page 308 of 395

Downloaded from www.Manualslib.com manuals search engine Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted or corroded. If
wheel nuts keep coming loose, the wheel, wheel bolts, and wheel nuts
should be replaced. If the wheel leaks air, replace
it (except some
aluminum wheels, which can sometimes be repaired). See your Cadillac
dealer
if any of these conditions exist.
Your dealer will know the kind of wheel you need.
Each new
wheel should have the same load carrying capacity, diameter,
width,
offset, and be mounted the same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts, or wheel nuts,
replace them
only with new GM original equipment parts. This way, you
will be sure to have the right wheel, wheel bolts, and wheel nuts for your
Cadillac model.
NOTICE:
The wrong wheel can also cause problems with bearing life,
brake cooling, speedometer/odometer calibration, headlamp aim, bumper height, vehicle ground clearance, and tire or tire \
chain clearance
to the body and chassis.
6-49
Page 324 of 395

Downloaded from www.Manualslib.com manuals search engine [Engine Compartment Fuse Block
~~~
E DISTR
USAGE I
INJ
IGN 1
FUEL PUMP
PCM (BAT) RTD (BAT)
F
A/C COMP
HDLPS
TURN/HAZ
DRL
DRL
HTD W/S
IGN OFF
L HDLP
LO
I R HDLP LO Ignition
Control Module
I
L HDLP HI
R HDLP HI
I
I
TRANSECS Sensing
& Diagnostic Module
Powertrain Control Module (PCM); PASS-KeymII Decode llodule
1,4,6 and 7 Fuel Injectors
2,3,5 and 8 Fuel Injectors
A/C Refrigerant Pressure Switch; Transaxle Range Switch;
Stop/BTSI/Cruise Brake Switch; Instrument Panel Cluster; Keyless
Entry Module; DiagnosticEnergy Reserve Module (Derm);
Cornering Lamps; Tbrn/Hazard Switch Assy; Chime Module;
Headlamp Switch; Twilight Sentinel/DRL Module
Fuel Pump; Oil Pressure Switch; Powertrain Control Module
Powertrain Control Module (PCM)
Road Sensing Suspension (RSS) Module
NC Compressor Clutch
Headlamp Dimmer Switch; Headlamp Relay “D” (Engine Comp.
Micro Relay Center); DRL Headlamp Relay
“E’ (with Daytime
Running Lamps); Powers C13
Stop/BTSI/Cruise Switch; Sto lamp Switch Capacitor; Anti-Slip
Regulation (ASR)S Traction 8ontrol
Hazard Flasher; Turn Flasher Relay; Turn Flasher Module
Daytime Running Lamps (Canada)
Left and Right Lo-Beam Headlamp (Canada)
Heated Windshield Control Module
Instrument Panel Cluster
Left Lo-Beam Headlamu
(PCM)
Right Lo-Beam Headlamp
Left Hi-Beam Headlamp
Right Hi-Beam Headlamp
Rear Defogger Relay; Electronic Level Control (ELC); Heated
Windshield; Heater and A/C Programmer; Cruise Control
Extended Travel Brake Switch; Powertrain Control Module (PCM); \
Cooling Fan Relays
1,2 and 3; Front and Rear Heated Oxygen Sensor
Power Steering Pressure Switch; Exhaust Gas Recirculation (EGR)
Valve; Transaxle Shift Solenoids A
& B; Evaporative Emission
Control Solenoid; Powertrain Control Module (PCM); Torque
Converter Clutch Solenoid; TCC Brake Switch
6-65
Page 326 of 395
Downloaded from www.Manualslib.com manuals search engine RH MAXI" FUSE BLOCK I ~~
FUSE/CIRCUIT
BREAKER (C.B.)
DAB (C.B.)
RADIO (Fuse)
COOLING
FANS
(Fuse)
HVAC BLOWER
(Fuse)
ABS BRAKES (Fuse)
EXT LAMPS (Fuse)
USAGE
Retained Accessory Power (RAP)(Astroroof/Power Windows)
Delco-Bose
TM Speakers; Radio Control
Cooling Fans
HVAC Power
Motor; A/C Compressor
Brake Pressure Modulator Valve
Turn Flasher Module; Hazard Flasher; Stop/BTSI/Cruise Brake
Switch; Parking Lamps; Daytime Running Lamps (Canada);
Engine Comp. Fuses B1, B3 and B5; Trunk Comp. Fuses Dl1 and
Dl3
Rear Compartment Fuse Block
3 6-67