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NOTICE:
If the air cleaner is off, a backfire can cause a damaging engine
fire. And, dirt
can easily get into your engine, which will damage
it. Always have the air cleaner in place when you’re driving.
AUTOlMATIC TMSAZE 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.
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L HDLP LO R HDLP LO L HDLP HI R HDLP HI ION 3 COOL'FAN TRANS
I FUSE CENTER IDENTIFICATION I
ENGINE COMPARTMENT FUSE BLOCK
DlSTR 20A
SIR 20A - IGNITION CONTROL MODULE
- DIAGNOSTIC/ENERGY RESERVE
MODULE (DERM)
- DUAL POLE ARMING SENSOR PCM (ION 1OA
- PASS-Key@ DECODER MODULE INJ 10A
- POWERTRAIN CONTROL MODULE (PCM)
- 1,4,6, AND 7 FUEL INJECTORS
- 2.3.5. AND 8 FUEL INJECTORS INJ 1OA
ION
1 iOA - A/C REFRIGERANT PRESSURE SWITCH - TRANSAXLE RANGE SWITCH - STOP/BTSI/CRUISE BRAKE SWITCH - INSTRUMENT PANEL'CLUSTER - KEYLESS ENTRY MODULE - DIAGNOSTlCfENERGY RESERVE MODULE
- PERM2 ORN RING LIGHTS - TURN/HAZARD SWITCH ASSY. - CHIME MODULE - HEADLIGHT SWITCH - TWILIGHT SENTINEUDRL MODULE
- FUELPUMP - OIL PRESSURE SWITCH - POWERTRAIN CONTROL MODULE IPCMI
FUEL PUMP 20A
PCM (BAT) 1OA
RTD
, AT) 20A - RgAD SENSING SUSPENSION (RSS) MODUL A/C COMP 1OA
- POWERTRAIN CONTROL MODULE (PCM)
- A/C COMPRESSOR CLUTCH HDLPS 3OA
.~
- HEADLIGHT DIMMER SWITCH - HEADLIGHT RELAY "D (ENGINE COMF!
- DRL HEADLIGHT RELAY "E" (WITH DAYTIME
- POWERS C13 MICRO RELAY CENTER)
RUNNING LIGHTS)
E
STOP LP 2OA - STOP/BTSI/CRUISE SWITCH - STOPUGHT SWITCH CAPACITOR TURNIHAZ 20A - HAZARD FLASHER - TURN FLASHER RELAY - TURN FLASHER MODULE DRL 1 OA (CANADA) - DAV~ME RUNNI'NG LIGHTS (CANADA) ~ ~~
DRL 1 OA (CANADA)
HTD
W/S 1OA
L HDLP LO 1OA
- LEFT AND RIGHT LO BEAM HEADLAMP
- HEATED WINDSHIELD CONTROL MODULE
- LEFT LO BEAM HEADLAMP R HDLP LO 10A
L HDLP HI 1OA - RIGHT LO BEAM HEADLAMP
- LEFT HI BEAM HEADLAMP R HDLP HI 1OA
IGN
3 10A - RIGHT HI BEAM HEADLAMP
- REAR DEFOGGERRELAY - ELECTRONIC LEVEL CONTROL IELCI - HEATED WINDSHIELD - HEATER AND A/C PROGRAMMER - CRUISE CONTROL
..
COOLING FAN 1OA - MENDED TRAVEL BRAKE SWITCH - POWERTRAIN CONTROL MO'DULE (PCM) - COOLING FAN RELAYS 1,2, AND 3 - FRONT AND REAR HEATED OXYGEN SENSOR TRANSIECS 1 OA - OVERSPEED ALERT MODULE (=PORT) - POWER STEERING PRESSURE SWITCH - EXHAUST GAS REClRCULAilON (EGR) VALVE - TRANSAXLE SHIFT SOLENOIDS A & B - EVAPORATIVE EMISSION CONTROL
SOLENOID ~~
- POWERTRAIN CONTROL MODULE (PCM) - TORQUE CONVERTER CLUTCH SOLENOID - TCC BRAKESWlTCH
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Downloaded from www.Manualslib.com manuals search engine 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 100,000 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 connecting rods support the free floating piston pins in
bronze bushings for superior high speed performance. The fillets
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.
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