
Downloaded from www.Manualslib.com manuals search engine Inflation -- Tire Pressure
The Certificationflire label, which is on the rear edge of
the driver’s door, shows the correct inflation pressures
for your tires when they’re cold. “Cold” means your
vehicle has been sitting for at least three hours or driven
no more than 1 mile (1.6 km).
I NOTICE:
Don’t let anyone tell you that .underinflation or
overinflation is
all right. It’s not. If your tires
don’t have enough air junderinflation), you can
get the following:
Too much flexing
Too much heat
0 Tire overloading
Bad wear
Bad handling
Bad fuel economy.
NOTICE: (Continued)
I NOTICE: (Continued) I
If your tires have too much air (overinflation),
you can get the following:
Unusual wear
Bad handling
Rough ride
Needless damage from road hazards.
When to Check
Check your tires once a month or more. Also, check the
tire pressure of the spare tire.
How to Check
Use a good quality pocket-type gage to check tire
pressure. You can’t tell
if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they’re underinflated.
Be sure
to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.
6-42

Downloaded from www.Manualslib.com manuals search engine Capacities and Specifications
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 GM truck dealer.
These specifications are for information
only. If you have any questions, see the service manual for the chassis or
refer to the body manufacturer’s publications.
Engine Identification -- Gasoline Engines
Type V6 V8
Engine
“VORTEC” 4300
“VORTEC” 5000
VIN Code w M
Fuel System SFI’ SFI
Sequential Central Port Fuel Injection
Wheel Nut Torque
MODEL TORQUE
All 122 ft-lb ( 165 N-m)
“VORTEC” 5700
V8
R
SFI’
2Sequential Multi-Port Fuel Injection “VORTEC”
7400
V8
J
SFI~
L LC

Downloaded from www.Manualslib.com manuals search engine Fuel Tank Capacity
TYPE
Standard Tank
Cutaway Standard Tank
Cutaway Optional Tank
All quantities are approximate.
QUANTITY
3 1 gallons (1 17.3 L)
35 gallons (132 L)
55 gallons (208.2 L)
Normal Replacement Parts
Engine “VORTEC” 4300
VIN w
Oil Filter PF52
Air Cleaner Filter* A9 17C
PCV Valve CV789C
Spark
Plugs 4 1-932
Fuel Filter GF48
1
Radiator Cap RC36 VORTEC”
5000
M
PF1218
A9 17C
cv774c
4 1-932
GF48
1
RC36
*For severe dusty conditions, use
AC Air Filter, Part No. 1236C. “VORTEC”
5700
R
PF1218
A9 17C
cv774c
4 1-932
GF48
1
RC36 “VORTEC” 7400
J
PF1218
A917C
cv774c
4 1-932
GF48
1
RC36
6-67

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule
I Short TripKity Intervals -- Gasoline Engines I
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection. Fuel Tank, Cap and Lines
Inspection. Exhaust Gas Recirculation System
Inspection. Evaporative Control System Inspection.
Every 100,000 Miles (166 000 km): Cooling System
Service (or evezy
60 months, whichever occurs first).
Spark Plug Wire Inspection. Spark Plug Replacement.
Positive Crankcase Ventilation (PCV) Valve Inspection.
These intervals only summarize maintenance services.
Be sure to follow the complete maintenance schedule
on
the following pages.
Long WplHighway Definition -- ,asoline Engines 1
Follow this maintenance schedule only if none of the
conditions from the Short TripKity Maintenance
Schedule is true.
Driving a vehicle with a fully warmed engine under
highway conditions causes engine oil to break
down slowel:
7-5

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule
-
I Long TripMighway Intervals -- Gasoline En 1,ong ‘lrip/Highn.ay Intervals -- Gasoline Engines
Every
7,500 Miles (12 500 km): Engine Oil and Filter
Change (or every
12 months, whichever occurs first).
Chassis Lubrication (or every
12 months, whichever
occurs first). Drive Axle Service.
At 7,500 Miles (12 500 km) -- Then Every
15,000 Miles (25
000 km): Tire Rotation.
Every 15,000 Miles (25 000 km): Shields and
Underhood Insulation Inspection (GVWR above
8,500 lbs. only). Thermostatically Controlled Engine
Cooling Fan Check (or every
12 months, whichever
occurs first).
Every 30,000 Miles (50 000 km): Fuel Filter
Replacement. Air Cleaner Filter Replacement.
Front Wheel Bearing Repack (or at each brake
relining, whichever occurs first).
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (vehicles over
8600 GVWR or
driven under severe conditions only).
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection. Fuel Tank, Cap and Lines
Inspection. Exhaust Gas Recirculation System
Inspection. Evaporative Control System Inspection.
Every 100,000 Miles (166 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
Spark Plug Wire Inspection. Spark Plug Replacement.
Positive Crankcase Ventilation
(PCV) Valve Inspection.
These intervals only summarize maintenance services.
Be sure to follow the complete maintenance schedule on
the following pages.

Downloaded from www.Manualslib.com manuals search engine Short TripKity Maintenance Schedule -- Gasoline Engines I
60,000 Miles (100 000 km) (Continued)
0 If your engine has a thermostatically
controlled cooling fan, inspect all hoses
and ducts for proper hook-up (or every
12 months, whichever occurs first). Be sure
the valve works properly.
This is ~1 Noise
Emission Control Service. Applicable o~~ly to
vehicles sold in
the United States.
0 Inspect engine accessory drive belt.
0 Replace fuel filter.
Conduct Exhaust Gas Recirculation (EGR)
system inspection as described
in the
service manual.
An Emission Control Service. ?
An Emission Control Service.
An Emission Control Service.
0 Conduct evaporative control system
inspection. Check all fuel and vapor lines
and hoses for proper hook-up, routing and
condition. Check that the purge valve works
properly
(if equipped). Replace as needed.
An Emission Control Service.
0 Replace air cleaner filter.
An Emission Control Service.
0 Inspect fuel tank, cap and lines for damage
or leaks. Inspect
fuel cap gasket for any
damage. Replace parts as needed.
AFI Emission Control Service.
I I I 3
DATE SERVICED BY ACTUAL MILEAGE
7-20

Downloaded from www.Manualslib.com manuals search engine I Long Tripmighway Maintenance Schedule -- Gasoline Engines
0 Replace air cleaner filter.
0 Inspect fuel tank, cap and'lines for damage
or leaks. Inspect fuel cap gasket for any
damage. Replace parts as needed.
An Emission Control Service. -t
An Emission Control Service.
0 Vehicles With GVWR Above 8,500 lbs. Only:
Inspect shields and underhood insulation for damage or looseness. Adjust or replace as
required.
This is a Noise Emission Control Service.
Applicable only to vehicles sold in the United States.
controlled cooling fan, inspect all hoses
and ducts for proper hook-up (or every
12 months, whichever occurs first). Be sure
the valve works properly.
This is a Noise
Emission Control Service. Applicable
only tu
vehicles sold in the United States.
0 If your engine has a thermostatically
0 Conduct Exhaust Gas Recirculation (EGR)
system inspection as described in the
service manual.
An Emission Control Service. 3-
inspection. Check all fuel and vapor lines
and hoses for proper hook-up, routing and
condition. Check that the purge valve works
properly, if equipped. Replace
as needed.
An Emission Control Service. -f
0 Conduct evaporative control system
I I I 1
DATE ACTUAL MILEAGE SERVICED BY:
7-37

Downloaded from www.Manualslib.com manuals search engine Engine ........................................ 6-8
Coolant
..................................... 6-20
Coolant Level Check
.......................... 7-43
Coolant Temperature Gage
..................... 2-54
Cooling System
.............................. 6-66
Exhaust
..................................... 2-24
Identification
........................... 6-60. 6-65
OilLevelCheck
.............................. 7-43
Overheating
................................. 5- 10
Running While Parked ......................... 2-25
StartingYour
................................ 2-14
Engineoil
.................................... 6-11
Additives ................................... 6-13
Checking
................................... 6-11
Pressure Gage
................................ 2-52
Used
....................................... 6-14
Whentochange
.............................. 6-14
Ethanol
........................................ 6-3
Exhaust, Engine
................................ 2-24
Fabric Cleaning
............................... 6-5 I
Fan Control, Climate Control System ................ 3-2
FillingYourTank
................................ 6-4
Filter, Air
..................................... 6-15
Finish Care
.................................... 6-56
Finish Damage ................................. 6-57
First Gear, Automatic Transmission
................ 2- I9
Flashers, Hazard Warning ......................... 5-1
Flat Tire. Changing
............................. 5-20
Fluid Capacities
................................ 6-65
Fluids and Lubricants
............................ 7-49
Foreign Countries, Fuel
........................... 6-4
Adding ..................................... 6-11
French Language Manual 11
Front Parkingflurn Signal Lamp Bulb Replacement .... 6-34
Front Storage Area
.............................. 2-41
FrontTowing
................................... 5-8
Fuel .......................................... 6-2
Canada
...................................... 6-3
Filling Your Tank
.............................. 6-4
Gage
....................................... 2-53
In Foreign Countries ........................... 6-4
Tank Capacity
............................... 6-67
Fuses and Circuit Breakers
....................... 6-62
Gages
.. ...........................
Engine Coolant Temperature .................... 2-54
Engine Oil Pressure
........................... 2-52
Fuel
....................................... 2-53
Speedometer
................................. 2-45
Voltmeter
................................... 2-55
Gear Positions. Automatic Transmission
............. 2-17
Gross Axle Weight Rating
........................ 4-27
Gross Vehicle Weight Rating
...................... 4-26
Guide en Franpis
11
GAWR ....................................... 4-27
.. .................................
GVWR ....................................... 4-26
Halogen
Bulbs ................................ 6-31
Hazard Warning Flashers .......................... 5-1
Head Restraints
................................. 1-5
Headlamps
.................................... 2-35
Bulb Replacement
............................ 6-31
HighLow Beam Changer ...................... 2-30
OnReminder
................................ 2-36
Wiring
..................................... 6-61
9-4