Page 262 of 403
Downloaded from www.Manualslib.com manuals search engine A. Battery 
B. Air Cleaner 
C.  Radiator  Cap 
D. Coolant Recovery  Tank 
E. Air Filter Restriction  Indicator 
F. Engine Oil Dipstick 
G. Automatic Transmission Dipstick 
H. Fan 
I. Power  Steering  Fluid Reservoir 
J. Engine  Oil Fill 
. I '.. t .. L $K. , .,J Brake Fluid Reservoir 
L. Windshield  Washer Fluid Reservoir 
M. Fusemelay  Center 
N. Storage  Compartment 
6-9   
     
        
        Page 264 of 403
Downloaded from www.Manualslib.com manuals search engine A. Battery 
8. Coolant Recovery’Tank 
C. Air  Cleaner 
D. Radiator Cap 
E. Air Filter Restriction  Indicator 
E Engine  Oil Dipstick 
G. .Automatic  Transmission  Dipstick 
H. Engine Oil Fill 
I. Fan 
J. Power  Steering  Fluid  Reservoir 
K. Brake  Fluid  Reservoir 
L. Storage  Compartment 
M. Windshield  Washer Fluid  Reservoir 
N. Fuse/Relay  Center 
.. 6-11   
     
        
        Page 268 of 403

Downloaded from www.Manualslib.com manuals search engine When  to  Change  Engine  Oil 
See if any  one of these  is  true for you: 
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. 
The vehicle  is  used for delivery service,  police, taxi 
or  other commercial application. 
Driving  under  these conditions causes  engine  oil 
to 
break  down sooner. If any one of these is  true  for  your 
vehicle,  then 
you need  to  change  your oil and filter 
every 
3,000 miles (5 000 km)  or 3 months -- whichever 
occurs first. 
If  none  of  them  is  true, change  the oil and  filter  every 
7,500 miles (12 500 km) or 12 months -- whichever 
occurs first. Driving  a vehicle  with a 
fully warmed 
engine  under  highway  conditions causes engine oil to 
break  down  slower. 
What  to Do with  Used  Oil 
Did  you know that used  engine oil contains  certain 
elements 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. 
6-15   
     
        
        Page 271 of 403

Downloaded from www.Manualslib.com manuals search engine 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. 
Automatic Transmission Fluid 
When to Check and Change 
A good time  to  check your automatic  transmission  fluid 
level 
is when the  engine oil  is changed. 
Change  both the fluid  and filter every 
50,000 miles 
(83 000 Ism) if the  vehicle  is  mainly  driven under one 
or,more  of these  conditions: 
0 In  heavy  city traffic  where  the outside temperature 
regularly reaches 
90” F (32 O C)  or higher. 
0 In hilly  or mountainous terrain. 
0 When  doing  frequent trailer towing. 
0 Uses such as found  in taxi, police or  delivery service. 
If  you  do not use your  vehicle under any of these 
conditions, the fluid  and filter  do not  require changing. 
See  “Scheduled  Maintenance Services”  in 
the Index. 
6-18   
     
        
        Page 324 of 403
Downloaded from www.Manualslib.com manuals search engine Normal  Maintenance  Replacement  Parts -- Gasoline  Engines 
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. 
Engine 
VORTEC” 5700 
VIN  R  Oil  Filter  PF1218T 
Air  Cleaner Filter 
A 1300C 
Spark Plugs * 4 1-932 
Spark  Plug  Gap 
0.060 in. (1.52  mm) 
Fuel  Filter  GF626 
Wiper  Blades.  (Front)  22154886 
Wiper  Blade Type (Front)  Trico 
Wiper  Blade Length (Front)  18 inches 
(45.0 cm) 
Wiper  Blade (Rear)  22154396 
Wiper  Blade Type (Rear)  Trico 
Wiper  Blade Length  (Rear)  14 inches (35.5  cm) 
“four-Wheel-Drive  Vehicles 
-- use  a PF52 oil filter. 
46VORTEC” 7400 
J 
PF1218 
A1 3OOC 
4 1-932 
0.060 in. (1.52  mm) 
GF626 
22154886  Trico 
18 inches 
(45.0 cm) 
22154396 
Trico 
14 inches  (35.5  cm)   
     
        
        Page 325 of 403
Downloaded from www.Manualslib.com manuals search engine Cooling System  Capacity  (Approximate) 
After refill,  the level must be rechecked.  See  “Cooling 
System”  in  the Index. 
ENGINE VIN  QTY  Without  Rear  Heater 
“VORTEC”  5700 
R  17.5  Quarts (1615 L) 
“VORTEC”  7400 J 25 Quarts (23.5 L) 
Crankcase  Capacity  (Approximate) 
After refill,  the level must be rechecked.  See  “Engine 
Oil”  in the  Index. 
ENGINE,  VIN  QUANTITY WITH FILTER? 
“VORTEC” 5700 R 5 Quarts (4.8 L) 
“VORTEC” 7400 J 7 Quarts  (6.5 L) 
?Oil filter  should  be  changed  at every oil  change. 
QTY  With  Rear  Heater 
20 Quarts (19 L) 
27.5 Quarts (26 L) 
6-72   
     
        
        Page 331 of 403

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule 
Short Trip/City Definition -- Gasoline  Engines 
Follow  the  Short TripKity  Maintenance  Schedule if any 
one  of these  conditions is true 
for your vehicle: 
Most  trips are  less than 5 to 10 miles (8 to 16 km). 
This  is  particularly important when  outside 
temperatures  are  below freezing. 
driying  in stop-and-go  traffic). 
off-road  frequently. 
your  vehicle. 
or  other,  commercial application. 
Most  trips include  extensive idling (such as  frequent 
You operate your vehicle  in dusty areas  or 
You frequently tow  a trailer  or  use a carrier  on  top of 
0 If the  vehicle is  used for delivery  service, police, taxi 
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 soonel: 
Short'Trip/City Intervals -- Gasoline  Engines 
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). 
At  6,000  Miles  (10 000 km) -- Then  Every 
12,000 Miles (20 000 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).  Front  Wheel  Bearing  Repack 
(2WD only) 
(or  at  each  brake  relining,  whichever  occurs  first). 
Every 30,000 Miles (50 000 km): Fuel  Filter  Replacement. 
Every 50,000 Miles (83 000 km): Automatic 
Transmission  Service (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.   
     
        
        Page 332 of 403

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule 
Follow  this  maintenance schedule only if none  of the 
conditions from  the Short Trip/City  Maintenance 
Schedule  is true. 
Driving a vehicle  with a fully warmed  engine 
under highway conditions  causes  engine  oil  to break 
down 
s10w.e~ 
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,  whicheve 
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 :r 
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. Front Wheel Bearing Repack  (2WD only)  (or at each brake relining,  whichever 
occurs  first). 
Every 50,000 Miles (83 000 km): Automatic 
Transmission  Service (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. 
7-5