Page 626 of 699

Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer’s specifica-
tions, should be obtained immediately. To minimize the possibility of catalytic converter dam-
age:
•
Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion.
• Do not try to start the engine by pushing or towing the
vehicle.
• Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.
624 MAINTAINING YOUR VEHICLE
Page 647 of 699
Cavity Car-tridgeFuse Mini
Fuse Description
J07 30 Amp Pink Antilock Brakes
Valve/Stability
Control System
J08 40 Amp Green Power Seat
J09 30 Amp Pink E-Brake
J10 30 Amp Pink Headlamp Wash
Relay Contact
J11 30 Amp Pink Drive Train Control
Module
J12 30 Amp Pink Rear DefrosterCavity Car-
tridgeFuse Mini
Fuse Description
J13 60 Amp Yellow Main Ignition Off
Draw (IOD)
J14 20 Amp Blue Trailer Tow
Lamps/Park Lamps
J15 40 Amp Green Front Cabin Fan/
Blower
J17 40 Amp Green Starter Motor Sole-
noid
J18 20 Amp Blue Powertrain Control
Module/Powertrain Control Module/
Transmission Range
7
MAINTAINING YOUR VEHICLE 645
Page 650 of 699
Cavity Car-tridgeFuse Mini
Fuse Description
M19 25 Amp
Natural Automatic Shut-
down 1 and 2
M20 15 Amp
Blue Instrument Cluster
M21 20 Amp
Yellow Automatic Shut-
down 3
M22 10 Amp
Red Horns (Low/High)
– Right
M23 10 Amp
Red Horns (Low/High)
– Left
M24 25 Amp
Natural Rear WiperCavity Car-
tridgeFuse Mini
Fuse Description
M25 20 Amp
Yellow Fuel Pump Motor
Output/Diesel Lift Pump (Export Only)
M26 10 Amp
Red Driver Door Switch
Bank
M27 10 Amp
Red Ignition Switch/
Wireless Control
Module/Keyless Entry Module
M28 15 Amp
Blue Powertrain
Controller/
Transmission Con- troller
648 MAINTAINING YOUR VEHICLE
Page 652 of 699

CAUTION!
•When installing the totally integrated power mod-
ule cover, it is important to ensure the cover is
properly positioned and fully latched. Failure to do
so may allow water to get into the totally integrated
power module and possibly result in a electrical
system failure.
• When replacing a blown fuse, it is important to use
only a fuse having the correct amperage rating. The
use of a fuse with a rating other than indicated may
result in a dangerous electrical system overload. If
a properly rated fuse continues to blow, it indicates
a problem in the circuit that must be corrected.
VEHICLE STORAGE
If you are leaving your vehicle dormant for more than 21
days you may want to take steps to protect your battery.
You may:
• Remove fuse #J13 in the Totally Integrated Power
Module (TIPM) labeled Main Ignition-Off Draw (IOD).
• Or, disconnect the negative cable from the battery.
• Anytime you store your vehicle, or keep it out of
service (i.e. vacation) for two weeks or more, run the
air conditioning system at idle for about five minutes
in the fresh air and high blower setting. This will
ensure adequate system lubrication to minimize the
possibility of compressor damage when the system is
started again.
650 MAINTAINING YOUR VEHICLE
Page 687 of 699

Hazard Warning Flasher....................574
Headlights ............................. .652
Bulb Replacement ..................... .652
Cleaning ............................ .642
High Beam .......................... .315
On With Wipers ....................... .201
Passing ............................. .209
Replacing ........................... .652
Heated Mirrors .......................... .123
Heater, Engine Block ...................... .446
Hill Descent Control ...................... .316
Hill Start Assist .......................... .494
Hitches Trailer Towing ........................ .553
Holder, Cup ............................ .282
HomeLink (Garage Door Opener) .............262
Hood Release ........................... .198Ignition
.................................16
Key .................................14
Ignition Key Removal .......................16
Illuminated Entry ..........................23
Immobilizer (Sentry Key) ....................19
Infant Restraint ...........................83
Information Center, Vehicle ..................322
Inside Rearview Mirror .....................120
Instrument Cluster ........................311
Instrument Panel and Controls ................309
Instrument Panel Lens Cleaning ...............643
Integrated Power Module (Fuses) ..............643
Interior Appearance Care ....................641
Intermittent Wipers (Delay Wipers) .............211
Introduction ..............................4
Inverter, Power .......................... .280
Jacking Instructions ....................... .582
Jack Location ........................... .576
10
INDEX 685