Page 196 of 331

6-
6-1
Section 6 Service and Appearance Care
Here you will find information about the care of your vehicle. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There is also technical information about your
vehicle, and a part devoted to its appearance care.
6
-2 Service
6
-3 Fuel (Gasoline Engine)
6
-5 Fuels in Foreign Countries (Gasoline Engines)
6
-5 Filling Your Tank (Gasoline Engine)
6
-7 Filling a Portable Fuel Container
6
-7 Checking Things Under the Hood
6
-10 Noise Control System
6
-11 Engine Oil (Gasoline Engine)
6
-15 Engine Air Cleaner/Filter (Gasoline Engines)
6
-17 Automatic Transmission Fluid
6
-20 Manual Transmission Fluid
6
-22 Hydraulic Clutch
6
-23 Rear Axle
6
-24 Engine Coolant
6
-27 Radiator Pressure Cap (Gasoline Engine)
6
-28 Power Steering Fluid6
-29 Windshield Washer Fluid
6
-30 Brakes
6
-34 Battery
6
-35 Bulb Replacement
6
-39 Windshield Wiper Blade Replacement
6
-40 Tires
6
-50 Appearance Care
6
-51 Cleaning the Inside of Your Vehicle
6
-54 Cleaning the Outside of Your Vehicle
6
-58 GM Vehicle Care/Appearance Materials
6
-59 Vehicle Identification Number (VIN)
6
-60 Electrical System
6
-66 Replacement Bulbs
6
-66 Capacities and Specifications
6
-68 Normal Maintenance Replacement Parts 
     
        
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6-67 Capacities
After refill, the level must be rechecked. See ªCooling
Systemº in the Index.
 Engine  VIN Quantity
ªVORTECº 8100 G 28.5 quarts (27.0 L)
Engine Oil with Filter
After refill, the level must be rechecked. Add enough
engine oil so that the fluid is within the proper operating
range. See ªEngine Oilº in the Index.
 Engine VIN Quantity
ªVORTECº 8100 G 6.6 quarts (6.3 L)
Fuel Tank Capacity
Type Quantity
Front Tank 22.0 U.S. gallons (79 L)
Rear Tank 18.0 U.S. gallons (68 L)
Air Conditioning 
Refrigerant Capacity
If you do your own service work, you'll need the proper
service manual. See ªDoing Your Own Service Workº in
the Index for additional information. It is recommended
that service work on your air conditioning system be
performed by a qualified technician.
Air Conditioning 
Refrigerant R
-134a 2.0 lbs (0.91kg). . . . . . . . . . . . . 
Use Refrigerant Oil, R134a Systems 
     
        
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6-68
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.VIN Code G. . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Oil Filter* PF454. . . . . . . . . . . . . . . . . . . . . . . . 
Engine Air Cleaner Filter* A1300C . . . . . . . . 
Spark Plugs*** TJ14R-P15 . . . . . . . . . . . . . . . 
Fuel Filter* GF626. . . . . . . . . . . . . . . . . . . . . . . 
Wiper Blades** 22154886. . . . . . . . . . . . . . . . . 
Wiper Blade Type Trico. . . . . . . . . . . . . . . . . . 
Wiper Blade Length 18 inches (45.0 cm). . . . . . 
*ACDelco
 part number
**GM part number
***Denso part number
A1301C high
-capacity air cleaner filter. 
     
        
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Scheduled Maintenance
7-5
Short Trip/City Definition
Follow the Short Trip/City Scheduled Maintenance if
any one of these conditions is true for your vehicle:
Most trips are less than 5 miles (8 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 frequently tow a trailer.
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 sooner.
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).
Rear Axle Fluid Check.
Every 6,000 Miles (10 000 km): Tire Rotation.
Every 15,000 Miles (25 000 km): Shields and
Underhood Insulation Inspection. Diesel Engine
Only: Thermostatically Controlled Engine Cooling
Fan Check (or every 12 months, whichever occurs
first). Diesel Engine Only: Air Intake System
Inspection. Front Wheel Bearing Repack (or at each
brake relining, whichever occurs first).
Every 24,000 Miles (40 000 km): Diesel Engine Only:
Fuel Cap Replacement, if driving in dusty conditions.
Every 30,000 Miles (50 000 km): Rear Axle Fluid
Change with Extreme Overload, Trailer Towing or
High Speed Use. Fuel Filter Replacement.
(Continued) 
     
        
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Scheduled Maintenance
7-7
Long Trip/Highway Intervals
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). Rear Axle Fluid Check. Tire Rotation.
Every 15,000 Miles (25 000 km): Shields and
Underhood Insulation Inspection. Diesel Engine
Only: Thermostatically Controlled Engine Cooling
Fan Check (or every 12 months, whichever occurs
first). Diesel Engine Only: Air Intake System
Inspection.
Every 30,000 Miles (50 000 km): Rear Axle 
Fluid Change with High Speed Use. Fuel Filter
Replacement. Front Wheel Bearing Repack 
(or at each brake relining, whichever occurs first).
Long Trip/Highway Intervals
Every 50,000 Miles (83 000 km): Automatic
Transmission Service.
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection. Evaporative Control System
Inspection. Diesel Engine Only: Crankcase
Depression Regulator Valve (CDRV) System Check.
Every 100,000 Miles (166 000 km): Gasoline Engine
Only: Spark Plug Wire Inspection. Gasoline Engine
Only: Spark Plug Replacement. Gasoline Engine
Only: Automatic Transmission Service (normal
conditions).
Every 150,000 Miles (240 000 km): Cooling System
Service (or every 60 months, whichever occurs first).
These intervals only summarize maintenance services.
Be sure to follow the complete scheduled maintenance
on the following pages. 
     
        
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Short Trip/City Scheduled Maintenance
7-12
21,000 Miles (35 000 km)
Change engine oil and filter (or every 3 months, whichever occurs first). 
An Emission Control Service. 
Lubricate chassis components (or every 3 months, whichever occurs first).
(See footnote #.)
Check rear axle fluid level and add fluid as needed.
24,000 Miles (40 000 km)
Change engine oil and filter (or every 3 months, whichever occurs first). 
An Emission Control Service. 
Lubricate chassis components (or every 3 months, whichever occurs first).
(See footnote #.)
Check rear axle fluid level and add fluid as needed.
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.) 
Diesel Engine Only: Replace fuel cap if driving in dusty conditions. 
An Emission Control Service.
ACTUAL
SERVICED BY:MILEAGE
DATE
ACTUAL
SERVICED BY:MILEAGE
DATE 
     
        
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Short Trip/City Scheduled Maintenance
7-14
30,000 Miles (50 000 km) (Continued)
Replace fuel filter. 
An Emission Control Service. (See footnote .)
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.
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)
Diesel Engine Only: Check the air intake system installation to assure that
gaskets are properly sealed and that all hose connections, fasteners and other
components are tight. Also check to be sure that the air cleaner housing is
properly seated and the cover fits tightly. Tighten connections and fasteners or
replace damaged parts as necessary. This is a Noise Emission Control Service.
Applicable only to vehicles sold in the United States.
Diesel Engine Only: 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 a Noise
Emission Control Service. Applicable only to vehicles sold in the 
United States. 
     
        
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Short Trip/City Scheduled Maintenance
7-17
Diesel Engine Only: Check the air intake system installation to assure that
gaskets are properly sealed and that all hose connections, fasteners and other
components are tight. Also check to be sure that the air cleaner housing is
properly seated and the cover fits tightly. Tighten connections and fasteners or
replace damaged parts as necessary. This is a Noise Emission Control Service.
Applicable only to vehicles sold in the United States.
Diesel Engine Only: 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 a Noise
Emission Control Service. Applicable only to vehicles sold in the 
United States.
48,000 Miles (80 000 km)
Change engine oil and filter (or every 3 months, whichever occurs first). 
An Emission Control Service. 
Lubricate chassis components (or every 3 months, whichever occurs first).
(See footnote #.)
Check rear axle fluid level and add fluid as needed.
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.) 
Diesel Engine Only: Replace fuel cap if driving in dusty conditions. 
An Emission Control Service.ACTUAL
SERVICED BY:MILEAGE
DATE