Downloaded from www.Manualslib.com manuals search engine A CAUTION
Operating the engine with the air cleaner off can cause you or
others
to be burned. The air cleaner not only cleans the air, it
stops flame if the engine backfires.
If it isn’t there, and the
engine backfires, you could be burned. Don’t drive
with it off,
and be careful working on the engine with the air cleaner off.
J
NOTICE:
If the air cleaner is off, a backflre can cause a damaging tngine
fire, And, dirt can easily get into your engine, which will drmagc
it, Always have the air cleaner io place when you’rt ddvlng.
AUTOMTIC TRANSAXLE FLUID
When to Check and Change:
A good time to check your automatic transaxle fluid level is when the
engine oil is changed. Refer to the Maintenance Schedule to determine
when to change your
fluid. See “Scheduled Maintenance Services” in the
Index.
How to Check
Because this operation can
be a little difficult, you may choose to have
this done at a Cadillac dealership Service
Department.
If you do it yourself, be sure to follow all the instructions here, or you
could get a false reading on the dipstick.
278
Downloaded from www.Manualslib.com manuals search engine When the correct fluid level is obtained, push the dipstick back in all
the way.
How To Reset Transaxle Fluid Change Indicator: 4.6L (Northstar)
Your vehicle is equipped with a transaxle fluid change indicator.
A
“CHANGE TRANS FLUID” message will display on the Information
Center
when the power train computer determines that the transaxle
fluid needs to be changed or at each 100,000 miles
(160,000 km) interval,
whichever occurs first. When this message appears, change the t\
ransaxle
fluid and reset the transaxle fluid life indicator
as follows:
Turn the key “ON” with the engine stopped.
Press and hold the “OFF” and “REAR DEFOG” buttons on the
climate control simultaneously
until the “TRANS FLUID RESET”
message appears
in the Information Center (between 5 and 20
seconds).
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 coo’ It for
your Cadillac will:
Give freezing protection down to -34°F (-37’C) .
Give boiling protection up to 262 ” F (128 ” C) .
Protect against rust and corrosion.
Help keep the proper engine temperature.
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 1825-M,” which won’t damage
aluminum parts. You can also use a recycled coolant conforming to
GM
Specification 1825-M with a complete coolant flush and refill. Use GM
Engine Coolant Supplement (sealer) with any complete coolant c\
hange.
If you use these, you don’t need to add anything else.
Y
c.
282
Downloaded from www.Manualslib.com manuals search engine r ir
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P
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P I
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.
Adding Coolant
I 4.6 Liter (Northstar)
TO Check Coolant
When.
your engine is
cold, the coolant level
should be at “FULL
COLD”, or a little
higher.
283
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Downloaded from www.Manualslib.com manuals search engine c
P
___.__ HDIP Lo HDLP HI R H'C HI IGN 3 COOL FAN TRANSECS
i I
I FUSE CENTER IDENTIFICATION J
ENGINE COMPARTMENT FUSE BLOCK
COIL 20A - 4.9L DISTRIBUTOR - 4.6L IGNtTION CONTROL MODULE SIR 2OA
- DIAGNOSTIC ENERGY RESERVE - - - - - - -
LF4 DERM) SIR (AIR BAG) - MlNG SENSOR
PCM (IO 1.OA - POWE Y TRAIN CONTROL MODUL
INJ IOA - PASSKeyS DECODER MODULE MODULE
.E (PCM)
--FUEL INJECTORS 1,4,6,7 INJ 1OA - FUEL INJECTORS 2,3,5,8 ION 1OA - A/C COMPRESSOR - ELECTROCHROMIC MIRROR - INSTRUMENT PANEL CLUSTER - DIAGNOSTIC ENERGY RESERVE MODULE
- KEYLE &Pi S E TRY MO b ULE - CORNERING LIGHTS - CHIME MODULE - TWILIGHT SENTINEUDRL MODULE - BACKUP LIGHTS - BRAKE TRANSMISSION SHIFT INTERLOCK
- FUEL PUMP
(DERM SIR AIR BAG
FUEL
20A
PCU(&A IOA
AC IOI
MID W 8 101
$TOP LP ;Ku
fURNiHA2 20A
FQWERTWN CONTROL MOWlE
MI&€ a 7RAIFI CONTRO( uOMKE (PCM)
AC CCEUYellS3uA
HfArtO &NISH&AO
STOP LIGHTS
- HAZARD LIGHTS - TURN SIGNAL LIGHTS
DRL 1OA (CANADA)
DRL
10A (CANADA)
SUSPENSION 1OA
- DAYTIME RUNNING LIGHTS
- DAYTIME RUNNING LIGHTS
- ROAD SENSING SUSPENSION
- LNORTHSTW PEED SENSITIVE SUSPENSION (4.9L)
- R 6 AD SENSING SUSPENSION
- LEFT HEADIAMP LOW BEAM
- RT HEADLAMP LOW BEAM
- LEFT HEADIAMP HIGH BEAM
- RIGHT HEADIAMP HIGH BEAM
- HEATED WINDSHIELD - HEATER AND A/C PROGRAMMER
- ELECT. LEVEL CONTROL (ELC) - DEFOGGER RELAY "D"
- CRUISE CONTROL
- POWERTRAIN CONTROL MODULE
- COOLING FANS
- POWERTRAIN CONTROL MODULE 4.6L)
- FRONT AND REAR HEATED OXYGE L
RTD BAT) 20A
L HDLP LO 1OA (EXPORT)
R HDLP LO 1OA (EXPORT)
L HDLP HI 1OA (EXPORT)
R HDLP HI (EXPORT)
ION 3 1OA
COOLING FAN 1OA
SENSOR (4.6L) TRANSIECS 1 OA
SOLENOID -- EXHAUST GAS RECIRCULATION (EGR)
- POWERTRAIN CONTROL MODULE (PCM) - AUTOMATIC TRANSAXLE - EVAPORATIVE EMISSION CONTROL
- OVERSPEED ALERT MODULE (EXPOR
- POWER STEERING PRESSURE SWITC 3
SOLENOID
329
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Downloaded from www.Manualslib.com manuals search engine I
The Northstar engine is designed to require less maintenance than many
other
DOHC V-8 engines. Engine systems are designed to remind the
driver when service is required.
An oil life index indicator monitors
ongoing operating conditions and reminds the driver when an oil change
is needed.
A low coolant warning message keeps track of the level of this
vital fluid. Direct acting hydraulic tappets provide maintenance free zero
lash operation
of the 32 valves from idle to the 6500 rpm redline. The
camshafts are driven by a two stage roller chain assembly which is
designed to provide quiet maintenance free operation. Platinum tipped
spark plugs increase the replacement interval
to 100,OO miles.
The four valve per cylinder design provides more efficient engine
breathing which results in higher power than comparable
two valve
engines. The central location
of each spark plug ensures a fast and
complete burning
of the fuel/air mixture. The induction system uses
smooth thermoplastic tubes
to channel air into the cylinders. The
smoothness
of the tubes is equivalent to the elaborate port polishing
methods used for race car engines. Careful design using the shape and
length
of the tubes boosts horsepower by using sonic pressure waves
created by the motion
of the inlet valves to increase the amount of air
entering each cylinder.
The Northstar engine
is also designed to be very durable. The aluminum
block has cast-in-place iron cylinder liners for greater wear resistance.
High strength forged steel connecting rods support the free floating
piston pins
in bronze bushings for superior high speed performance. The
fillits
of the nodular iron crankshaft undergo a high pressure compression
rolling operation
to improve their resistance to fatigue.
Quiet operation
is enhanced by the use of special materials and designs.
The front cover of the engine is stamped from laminated steel which
damps out noise. Special cam cover gasket seals isolate valve train
operation.
The fuel injectors are placed inside the induction system
housing
to eliminate the clicking noise which is common to other fuel
injected engines.
The Northstar engine
is designed to provide years of efficient, reliable,
satisfying operation. We
think it is also just plain fun to drive.
33 7
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Carbon Monoxide In Exhaust ........................ 211
Cassette Tape Player. Care Of Your ................... 163
Cassette Tape Systems .............................. 158
CB Radio. Adding A ............................. 155. 326
Cellular Telephone. Adding A ..................... 155. 326
Center Console ..................................... 73
Central Door Unlocking System ....................... 68
Chains. Tire ....................................... 314
Change The Oil. When To ........................... 275
Changing A Flat Tire ............................... 250
Charge. Battery. No Warning Light .................... 131
Chassis Lubrication ................. See Maint . Book. p.18
Checking The Brake Fluid
................................. 292
The Engine Oil Level ............................ 270
The Power Steering Fluid ......................... 287
The Transaxle Fluid .............................. 278
Things Under The Hood .......................... 267
Your Restraint Systems ............................ 61
Your Safety Belt Systems ........................... 61
Checks. Service Station ............... See Maint . Book. p.8
Chemical Paint Spotting
............................. 323
Child Restraint. Securing ............................. 47
Child Restraints ..................................... 46
Children And Safety Belts ............................ 43
Cigarette Lighter ................................... 122
Circuit Breakers ................................... 327
City Driving ....................................... 198
Cleaner. Air ....................................... 277
Cleaning
Aluminum Wheels
............................... 322
Fabric .......................................... 317
Glass .......................................... 320
Virql or 1.c.11hcr ................................. 319
I hi lndc ()I jtur ('ddI.~c ....................... 316
I tih 1'1 .u . r . 1rr1c IULL ...................... 164
I tlL. I iltfcl th ds ( )I )tu11 ( .......................... 323
I hc i+ wd4wld . rrrd M qwc Dladcs .................. 320
Nc.~lllcr rtp ................................... 322
('loch . Scltlng 1 hc .................................. 162
('limatc ('onlrc.1 . Electronic .......................... 147
~Ioscd-11~ H.ICCS. Don't Idle In ........................ 96
CO In Your Exhaust .............................. 95. 211
Cautions. Safety ...................................... 1
5.11L.1) Ikll .............................. 319
I hL ( )141\,c ~IL. ( )t jthidl (.,IL!III.Ic ..................... 321
I hi I4 ai? Ill I tlL iil\ll UlllL Ill l'.lll r.1 ................... 319
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Driving And the Road. Your
.............................. 165
At Night ....................................... 190
Defensive ...................................... 174
Hill and Mountain ............................... 203
In A Foreign Country ............................ 264
In Cities ........................................ 198
In Fog. Mist And Haze ........................... 196
On Snow Or Ice ................................. 209
In The Rain ..................................... 193
In Winter ....................................... 208
On A Long Trip ................................. 201
On The Freeway ................................. 199
On The Road ................................... 202
On Curves ...................................... 184
Through Deep Standing Water ...................... 83
Winter .......................................... 208
Drunken Driving ................................... 175
Dual Braking System ................................ 128
E
Electric Outside Mirror Control ...................... 118
Electrical Equipment. Adding ..................... 155. 326
Electronic Climate Control .......................... 147
Electronic Level Control ............................ 145
Electronic Solar Sensor ............................. 151
Emergencies. Braking In ............................ 184
Emergencies. Steering In ............................ 185
Emergency Starting. Discharged Battery ............... 223
Emergency Towing ................................. 229
Engine
BlockHeater
.................................... 82
Change Oil Indicator ............................. 143
Coolant ........................................ 282
Coolant Temperature Warning Lights ............... 130
Exhaust ......................................... 95
Oil ............................................ 269
Oil Additives .................................... 275
Oil Light ....................................... 132
Oil, When To Change ............................ 275
Overheating .................................... 233
Speed Limiter (Northstar) ........................ 133
Warning Light About Need For Service ............. 127
Ethanol In Gasoline ................................ 263
Exhaust, Caution ................................. 95, 211
Exhaust, Dangerous Gas In ........................ 95, 211
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