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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 
6-3 
6-5 
6-6 
6- 8 
6-9 
6-  13 
6- 14 
6-18 
6-2 
I 
6-24 
6-  25 
6-26 
6-26 
6-28  6-32 
6-32  Service 
Fuel  (Gasoline  Engine) 
Fuels 
in Foreign  Countries  (Gasoline  Engines) 
Filling  Your Tank  (Gasoline  Engine) 
Filling  a Portable Fuel  Container 
Checking Things  Under the Hood 
Noise Control System 
Engine  Oil (Gasoline  Engine) 
Air  Cleaner  Filter  (Gasoline  Engine) 
Automatic Transmission Fluid 
Manual Transmission Fluid 
Hydraulic Clutch 
Rear Axle 
Four-wheel  Drive 
Engine Coolant  Radiator Pressure  Cap  (Gasoline  Engine) 
Thermostat 
, 6-33 
6-3 3 
6-35 
6-39 
6-39 
6-50 
6-5 
1 
6-6 1 
6-62 
6-65 6-69 
6-70 
6-70 
' 6-76 
6-77  6-79  Power 
Steering  Fluid 
Windshield  Washer  Fluid 
Brakes 
Battery 
Bulb Replacement 
Windshield Wiper Blade Replacement 
Tires 
Appearance  Care 
Cleaning the Inside 
of Your  Vehicle 
Cleaning the Outside  of  Your  Vehicle 
Appearance Care Materials  Chart 
Vehicle  Identification Number  (VIN) 
Electrical  System  Replacement 
Bulbs 
Capacities  and Specifications 
Air  Conditioning  Refrigerants 
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“VORTEC” 4300,5000,5700 Engine, “VORTEC” 5700 engine shown,  locations  for other  engines  similar. 
When  you lift 
up the hood you’ll see: 
A.  Battery 
G. Automatic Transmission L. Clutch  Fluid Reservoir 
B.  Air  Cleaner 
Dipstick 
(If Equipped) (If Equipped) 
C. Radiator  Cap H. Fan M. Windshield  Washer Fluid 
D. Coolant Recovery Tank I. Power Steering  Fluid Reservoir  Reservoir 
E. Air Filter  Restriction  Indicator J. Engine  Oil Fill N. FuseRelay  Center 
F. Engine Oil Dipstick K. Brake Fluid  Reservoir 
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“VORTEC” 7400 Engine 
A. Battery 
B. Coolant Recovery  Tank 
C. Air Cleaner 
D.  Radiator Cap 
E. Air Filter Restriction Indicator 
F. Engine Oil Dipstick 
G. Automatic Transmission L. Clutch Fluid Reservoir 
Dipstick  (If Equipped) 
(If Equipped) 
H. Engine Oil Fill M. Windshield  Washer 
I. Fan  Fluid Reservoir 
J. Power Steering Fluid Reservoir N. Fusemelay Center 
K. Brake Fluid Reservoir 
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What to Do with Used Oil 
Did you know that used  engine oil contains certain 
e.lements 
that may  be unhealthy  for your  skin and could 
even cause cancer?  Don’t let used  oil stay  on  your skin 
for  very  long.  Clean your skin and nails  with soap and 
water,  or  a good hand cleaner.  Wash or properly throw 
away  clothing  or  rags containing  used engine  oil. (See 
the manufacturer’s warnings about 
the use and disposal 
of oil  products.) 
Used  oil can be  a real threat 
to the  environment.  If  you 
change your own 
oil, be  sure  to drain  all free-flowing oil 
from the filter before disposal. Don’t  ever  dispose of oil 
by  putting 
it in the  trash,  pouring it on the  ground, into 
sewers,  or into  streams 
or bodies  of water.  Instead, 
recycle  it  by taking it to  a place that collects  used oil. 
If 
you have  a problem properly disposing of your  used  oil, 
ask  your  dealer,  a service station  or  a local recycling 
center for help. 
Air  Cleaner  (Gasoline  Engines) 
Your  air cleaner  is located between  the battery and 
coolant recovery tank. 
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The  air  cleaner assembly 
has  an indicator  that lets 
you know  when the  air  filter 
is  dirty  and needs to  be 
serviced.  The  indicator  is 
located 
in the  air  intake  tube 
between the  air  cleaner and 
the  engine. 
See  “Owner Checks and Services’’  in the Index  to 
determine  when 
to check the indicator. 
If  the  area  inside  the clear  section 
of the indicator  is 
green, no  air  filter  service  is required.  When the area 
inside the  indicator is orange  and 
CHANGE AIR 
FILTER  appears, the filter should  be replaced. 
To remove the  air filter, unhook the  retaining  clips and 
remove the cover. Lift  the  filter and the connected  duct 
out 
of the  air  cleaner  housing.  Hold the duct and remove 
the  filter  by both  pulling  and twisting the  filter away 
from the  duct.  Care  should be taken  to dislodge as little 
dirt  as  possible. 
Clean the  filter  sealing  surface of the  duct  and 
the 
filter  housing. 
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Install the new filter by pushing it all  the  way to the stop 
on  the  duct. 
Install the  duct and the filter  into  the air cleaner housing. 
Make sure that the duct  fits properly into the housing. 
Install the cover and fasten the two retaining  clips. 
After  the air filter 
is properly serviced, the indicator 
should be reset. Push the button on top 
of the indicator 
to  reset it  to the green (clean)  filter 
zone. 
Refer to the Maintenance Schedule to determine when to 
replace  the air filter. See “Owner Checks  and Services” 
in the Index. 
A CAUTION: 
Operating  the  engine  with  the  air  cleaner off can 
cause  you or  others 
to be  burned.  The  air  cleaner 
not  only  cleans  the  air,  it  stops  flame  if the  engine 
backfires. 
If it  isn’t  there,  and  the  engine 
backfires,  you could  be  burned.  Don’t drive  with 
it 
off, and  be careful  working  on  the  engine  with 
the  air  cleaner  off. 
I 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. 
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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 
Oil  Filter';" 
Air Cleaner Filter* 
PCV  Valve* 
Spark Plugs* 
Fuel Filter* 
Wiper Blades** 
Wiper Blade  Type 
Wiper Blade Length 
w M 
PF52  PF12  18.1 
A  1300C?? 
A 1300C?? 
CV746C  CV796C 
4 1-932  4 1-932 
GF626 GF626 
22154886  22 154886 
Trico  Trico 
18 inches (45.0 cm) 18 inches 
(45.0 cm) 
"AC  part number 
**GM part number 
?Use 
a PF52 oil  filter if your vehicle has four-wheel drive. 
??A1301C high-capacity  air  cleaner filter. 
R J 
PF1218?  PF1218 
A 1300C?? A 1300C?? 
CV796C  cv774c 
4 1-932  4 1-932 
GF626  GF626 
22 154886  22154886 
Trico  Trico 
18  inches  (45.0 cm)  I8 
inches  (45.0  cm) 
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Cooling  System  Capacity  (Approximate) 
After refill,  the level  must be rechecked.  See  “Cooling 
System”  in the Index. 
Engine 
“VORTEC”  4300 
“VORTEC”  5000 
“VORTEC”  5700 
“VORTEC”  7400 
“VORTEC” 
7400  w/3500  HD 
VLN 
w 
M 
R 
J 
J 
Quantity 
13 quarts (12.3  L) 
17.5  quarts  (16.6 L) 
17.5  quarts  (16.6 
L) 
25 quarts (23.5  L) 
28.5  quarts  (27 
L) 
Crankcase  Capacity  (Approximate) 
After refill,  the  level  must be rechecked. Add  enough 
engine  oil 
so that the fluid  is within  the proper operating 
range.  See  “Engine  Oil” in  the  Index. 
Engine 
“VORTEC”  4300 
“VORTEC”  5000 
“VORTEC”  5700 
“VORTEC”  7400 
VIN Quantity  with  Filter? 
w 4.5 quarts (4.3 L) 
M 5 quarts  (4.8 L) 
R 5 quarts (4.8 L) 
J 6.6  quarts  (6.3 L) 
foil filter  should  be  changed  at every  oil change. 
Fuel  Tank  Capacity  (Approximate) 
PPe  Quantity 
Short Bed 
26 gallons (98 L) 
Long  Bed 
34 gallons (128 
L) 
Standard  Crew  Cab  34 gallons (128 L) 
Chassis-Cab  Front  Tank 2 1 gallons (79 L) 
Chassis-Cab  Rear Tank 
18 gallons (68 
L) 
3500  HD Models  Front  Tank 
21 gallons (79 L) 
3500  HD Models  Rear Tank 
18 gallons (68 
L) 
Air  Conditioning  Refrigerants 
Not  all  air conditioning refrigerants  are the  same. 
If the air conditioning  system  in your vehicle  needs 
refrigerant,  be sure  the proper  refrigerant  is used.  If 
you’re  not sure, ask  your  dealer. 
See  the refrigerant  charge  label under the 
hood for 
information regarding refrigerant  capacity. 
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