Page 298 of 380
FuseKircuit Usage
Breaker
A Not Used
B Not Used
1 Headlamp Switch, Body Control
Module, Headlamp Relay
FuseKircuit
Breaker
2
3
4
8
9
10
11
12
Usage
Cigarette Lighter, Data Link
Connector
Cruise Control Module and
Switch, Body Control Module,
Heated Seats
Gages, Body Control Module,
Instrument Panel Cluster
Interior Lights
Not Used Power Outside Mirror, Power
Lock Relay
Courtesy Lamps, Battery Run-Down Protection
HVAC Control Head (Manual)
Turn
Signal
Cluster, Engine Control Module Parking Lamps, Power Window
Switch, Body Control Module,
Ashtray Lamp
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FuseKircuit Breaker
13
14
15
16
17
18
19
20
21
22
23
24
Usage Engine Compartment Fuse Block
Auxiliary Power
Power Locks Motor
4WD Switch, Engine Controls
(VCM, PCM, Transmission)
Supplemental Inflatable Restraint,
SDM Module
Front Wiper
Not Used
Radio Battery
Not Used
HVAC (Manual), HVAC
I
(Automatic), HVAC Sensors
(Automatic)
Anti-Lock Brakes
Rear Wiper
Radio, Ignition The fuse
block is under the hood at the driver’s side of
the engine compartment.
Remove the cover
by turning the fastener to the left. To
reinstall the fuse panel cover, push in and turn the
fastener to the right.
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Page 300 of 380
FUSE
PULLER
DL 1T
STARTER
FlPUMP
PRINTED IN USA
I Name
TRL TRN
TRR TRN
TRL BTU
VEH
B/U
RT TURN
Usage
Trailer Left Turn
Trailer Right Turn
Trailer Back-up Lamps
Vehicle Back-up Lamps
Right Turn Signal Front
4
1
1
1
Name
LT TURN
LT TRN
RT TRN
RR PRK
TRL PRK
LT HDLP
RT HDLP
FR PRK INT BAT
ENG
1
ECM B
ABS ECM
1
HORN
BTSI
Usage
Left Turn Signal Front
Left Turn Signal Rear
Right Turn Signal Rear Right Rear Parking Lamps
Trailer Parking Lamps Left Headlamp
Right Headlamp
Front Parking Lamps
I/P Fuse Block Feed
Engine Sensors/Solenoids, MAP,
CAM, PURGE, VENT
Engine Control Module, Fuel
Pump, Module, Oil Pressure
Anti-Lock Brake System
Engine Control Module Injectors
Horn
Brake-Transmission Shift
Interlock
6-58
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Page 302 of 380

Replacement Bulbs
Lamps
Halogen Headlamps,
Composite Low- Beam
Halogen Headlamps.
Composite High- Beam
Tail and Stoplamps
Front Sidemarker Lamps
Front Turn Signal Lamps
Turn Signal Lamps
Quantity
2
2
4
Number
9006 HB4
9005 HB3
305 7
I94
31S7NA
3157
NA
Capacities and Specifications
Engine Description ............ "VORTEC" 4300
Type
.................................... V6
VINCode ................................. W
Firing Order
...................... 1-6-5-4-3-2
Horsepower
................... I90 at 4,400 rpm
Thermostat Specification
........... 1% "F (9 1 "C)
Spark Plug Gap
.......... 0.045 inches (0. I 14 cm)
Wheels and Tires
Wheel Nut Torque ........... 100 Ib-ft ( I40 Nem)
Tire Pressure . , . Look at the Certification/Tire label.
See "Loading Your Vehicle"
in the Index.
Normal Maintenance Replacement Parts
Replacement part numbers listed in this section are
based on the latest information available at the time
of
printing, and are subject to change. If a part listed in this
manual is not the same
as the part used in your vehicle
when
it was built, or if you have any questions, please
contact your retailer.
Oil Filter.
.............................. PFS2
Air Cleaner Filter ...................... A 1 163C
PCV Valve .......................... CV746C
Automatic Transmission Filter
Kit ...... 24200796
Spark P~LI~S
........................... 4 1-932
Fuel Filter ............................. GF48 1
Windshield Wiper Blade . . Trico (20 inchedS0.S crn)
Backglass Wiper Blade
... Trico (14 inched35.6 cm)
6-60
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Page 306 of 380

Introduction
IMPORTANT:
KEEP ENGINE OIL
AT THE PROPER
.VEL AND CHANGE
RECOMMENDED
11
.I
Your Vehicle and the EnvironmcC
Proper vehicle maintenance not only helps to keep your
vehicle
in good working condition, but also helps the
environment.
All recommended maintenance procedures
are important. Improper vehicle maintenance can even
affect the quality of the air we breathe. Improper fluid
levels or the wrong tire inflation can increase
the level
of emissions from your vehicle. To help protect our
environment. and to keep your vehicle
in good
condition, please maintain your vehicle properly.
How This Section is Organized
The remainder of this section is divided into five parts:
“Part A: Scheduled Maintenance Services” shows
what to have done and how often. Some
of these
services can be complex,
so unless you are technically
qualified
and have the necessary equipment, you should
let your retailer’s service department or another
qualified service center do these
jobs.
7-2
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Page 309 of 380

Maintenance Schedule
I Short Trip/City Definition
Follow the Short Trip/City Maintenance Schedule if any
one of these conditions is true for your vehicle:
0
0
0
0
0
Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
Most trips include extensive idling (such as frequent
driving in stop-and-go traffic).
You operate your vehicle in dusty areas or
off-road frequently.
You frequently tow a trailer or use a carrier on top of
your vehicle.
If
the vehicle is used for delivery service, police, taxi
or other commercial application.
One of the reasons you should follow this schedule if
you operate your vehicle under any of these conditions
is that these conditions cause engine oil to break
down sooney:
Short Trip/City Intervals
Every 3,000 Miles (5 000 km): Engine Oil and
Filter Change (or
3 months, whichever occurs first).
Chassis Lubrication (or
3 months, whichever occurs
first). Drive Axle Service (or
3 months, whichever
occurs first).
Every 6,000 Miles (10 000 km): Tire Rotation.
Every 15,000 Miles (25 000 km): Air Cleaner Filter
Inspection, if driving in dusty conditions. Automatic
Transmission Service (severe conditions only).
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement. Fuel Filter Replacement.
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (normal conditions).
Every 60,000 Miles (100 000 km): Engine
Accessory Drive Belt Inspection. Fuel Tank, Cap
and Lines Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV) Valve Inspection.
7-5
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Page 310 of 380

Maintenance Schedule
I Short TripKity Intervals I
Every 150,000 nliles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
1 Long Tripmighway Definition
Follow this maintenance schedule orll\. if none of the
conditions from the Short Trip/City Maintenance
Schedule is true.
Do not use this scl1edule if the vehicle
is used for trailer towing, driven in a dusty area or used
off paved roads. Use the Short Trip/City schedule for
these conditions.
Long Tripmighway Intervals
Every 7,500 Miles (12 500 km): Engine Oil and Filter
Change (or every
I2 months, whichever occurs first).
Chassis Lubrication (or every
12 months, whichever
occurs first). Drive Axle Service. Tire Rotation.
Every 15,000 Miles (25 000 km): Automatic
Transmission Service (severe conditions only).
Every 30,000 Miles (50 000 km): Fuel Filter
Replacement.
Air Cleaner Filter Replacement.
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (normal conditions).
Every 60,000 Miles (100 000 km): Engine
Accessory Drive Belt Inspection. Fuel Tank, Cap
and Lines Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV) Valve Inspection.
Every 150,000 Miles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
Tlrosc) iuter.\uls o,rl\* .\'lttlllllcrri:o l1lui/1~cn~rnco wr\.ic-e.s.
Br strw to,fi)llon* tho cw11plett-' nlcrintencrm-e schdule on
tl1e~fi~llol-t:iug pcrgc~s.
7-6
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Page 312 of 380

I Short Trip/City Maintenance Schedule I
3,000 Miles (5 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
17 Lubricate chassis components (or every 3 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid as needed. Check constant
An Ernission Control Service.
(See footnote #.)
velocity joints and axle seals for leaking. (See footnote ‘fi‘i’.)
6,000 Miles (1 0 000 km)
Change engine oil and filter (or every 3 months, whichever occurs first).
c] Lubricate chassis components (or every 3 months, whichever occurs first).
17 Check readfront axle fluid level and add fluid as needed. Check constant
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
An Emission Corm-ol Service.
(See footnote #.)
velocity joints and axle seals for leaking. (See footnote **.)
rotation pattern and additional information. (See footnote +.)
9,000 Miles (15 000 km)
El Change engine oil and filter (or every 3 months, whichever occurs first).
0 Lubricate chassis components (or every 3 months, whichever occurs first).
An Emission Contr-ol Servim.
(See footnote #.)
I DATE I
MILEAGE
DATE
MILEAGE
I DATE I
I SERVICEDBY I MILEAGE
7-8
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